ArcObjects Library Reference  

WatermarkFunctionUIClass

About the Create a custom raster function Sample

[C#]

WatermarkFunctionUIClass.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.DataSourcesRaster;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Framework;
using ESRI.ArcGIS.Geodatabase;
using CustomFunction;

namespace CustomFunctionUI
{
    [Guid("7441106F-73A4-4fa2-90BC-232BCEE1CEBF")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("CustomFunctionUI.WatermarkFunctionUIClass")]
    [ComVisible(true)]
    public class WatermarkFunctionUIClass: IComPropertyPage
    {
        #region Private Members
        WatermarkFunctionUIForm myForm; // The UI form object.
        IWatermarkFunctionArguments myArgs; // The watermark function arguments object.
        int myPriority; // Priority for the UI page.
        IComPropertyPageSite myPageSite;
        string myHelpFile; // Location for the help file if needed.
        UID mySupportedID; // UID for the Raster function supported by the property page.
        bool templateMode; // Flag to specify template mode.
        bool isFormReadOnly; // Flag to specify whether the UI is in Read-Only Mode.

        IRasterFunctionVariable myRasterVar; // Variable for the Raster property.
        IRasterFunctionVariable myBlendPercentageVar; // Variable for the BlendPercentage property.
        IRasterFunctionVariable myWatermarkImagePathVar; // Variable for WatermarkImagePath property.
        #endregion

        public WatermarkFunctionUIClass()
        {
            myForm = new WatermarkFunctionUIForm();
            myArgs = null;
            myPriority = 0;
            myPageSite = null;
            myHelpFile = "";
            mySupportedID = new UIDClass();
            mySupportedID.Value = "{" + "168721E7-7010-4a36-B886-F644437B164D" + "}";
            templateMode = false;
            isFormReadOnly = false;

            myRasterVar = null;
            myBlendPercentageVar = null;
            myWatermarkImagePathVar = null;
        }

        #region IComPropertyPage Members
        /// <summary>
        /// Activate the form. 
        /// </summary>
        /// <returns>Handle to the form</returns>
        public int Activate()
        {
            if (templateMode)
            {
                // In template mode, set the form values using the RasterFunctionVariables
                myForm.BlendPercentage = (double)myBlendPercentageVar.Value;
                myForm.WatermarkImagePath = (string)myWatermarkImagePathVar.Value;
                myForm.InputRaster = myRasterVar;
            }
            else
            {
                // Otherwise use the arguments object to update the form values.
                myForm.BlendPercentage = myArgs.BlendPercentage;
                myForm.WatermarkImagePath = myArgs.WatermarkImagePath;
                myForm.InputRaster = myArgs.Raster;
            }
            myForm.UpdateUI();
            myForm.Activate();
            return myForm.Handle.ToInt32();
        }

        /// <summary>
        /// Check if the form is applicable to the given set of objects. In this case
        /// only the Raster function object is used to check compatibility.
        /// </summary>
        /// <param name="objects">Set of object to check against.</param>
        /// <returns>Flag to specify whether the form is applicable.</returns>
        public bool Applies(ESRI.ArcGIS.esriSystem.ISet objects)
        {
            objects.Reset();
            for (int i = 0; i < objects.Count; i++)
            {
                object currObject = objects.Next();
                if (currObject is IRasterFunction)
                {
                    IRasterFunction rasterFunction = (IRasterFunction)currObject;
                    if (rasterFunction is IPersistVariant)
                    {
                        IPersistVariant myVariantObject = (IPersistVariant)rasterFunction;
                        // Compare the ID from the function object with the ID's supported by this UI page.
                        if (myVariantObject.ID.Compare(mySupportedID))
                            return true;
                        else
                            return false;
                    }
                    else
                        return false;
                }
            }
            return false;
        }

        /// <summary>
        /// Apply the properties set in the form to the arguments object.
        /// </summary>
        public void Apply()
        {
            if (!isFormReadOnly) // If the form is read only, do not update.
            {
                if (templateMode)
                {
                    // If in template mode, use the values from the page to
                    // update the variables.
                    if (myForm.InputRaster != null)
                    {
                        if (myForm.InputRaster is IRasterFunctionVariable)
                            myRasterVar = (IRasterFunctionVariable)myForm.InputRaster;
                        else
                            myRasterVar.Value = myForm.InputRaster;
                    }
                    myBlendPercentageVar.Value = myForm.BlendPercentage;
                    myWatermarkImagePathVar.Value = myForm.WatermarkImagePath;
                    // Then set the variables on the arguments object.
                    IRasterFunctionArguments rasterFunctionArgs =
                        (IRasterFunctionArguments)myArgs;
                    rasterFunctionArgs.PutValue("Raster", myRasterVar);
                    rasterFunctionArgs.PutValue("BlendPercentage", myBlendPercentageVar);
                    rasterFunctionArgs.PutValue("WatermarkImagePath", myWatermarkImagePathVar);
                }
                else if (myArgs != null)
                {
                    // If not in template mode, update the arguments object
                    // with the values from the form.
                    myArgs.BlendPercentage = myForm.BlendPercentage;
                    myArgs.WatermarkImagePath = myForm.WatermarkImagePath;
                    if (myForm.InputRaster != null)
                        myArgs.Raster = myForm.InputRaster;
                }
            }

            myForm.IsFormDirty = false;
        }

        /// <summary>
        /// Do not set any properties set in the form
        /// </summary>
        public void Cancel()
        {
            myForm.IsFormDirty = false;
        }

        /// <summary>
        /// Shut down the form and destroy the object.
        /// </summary>
        public void Deactivate()
        {
            myForm.Close();
            myForm.Dispose();
            myForm = null;
        }

        /// <summary>
        /// Return the height of the form.
        /// </summary>
        public int Height
        {
            get { return myForm.Height; }
        }

        /// <summary>
        /// Returns the path to the helpfile associated with the form.
        /// </summary>
        public string HelpFile
        {
            get { return myHelpFile; }
        }

        /// <summary>
        /// Hide the form.
        /// </summary>
        public void Hide()
        {
            myForm.Hide();
        }

        /// <summary>
        /// Flag to specify if the form has been changed.
        /// </summary>
        public bool IsPageDirty
        {
            get { return myForm.IsFormDirty; }
        }

        /// <summary>
        /// Set the pagesite for the form.
        /// </summary>
        public IComPropertyPageSite PageSite
        {
            set { myPageSite = value; }
        }
        
        /// <summary>
        /// Get or set the priority for the form.
        /// </summary>
        public int Priority
        {
            get
            {
                return myPriority;
            }
            set
            {
                myPriority = value;
            }
        }

        /// <summary>
        /// Set the necessary objects required for the form. In this case
        /// the form is given an arguments object in edit mode, or is required 
        /// to create one in create mode. After getting or creating the arguments
        /// object, template mode is checked for and handled. The template mode 
        /// requires all parameters of the arguments object to converted to variables.
        /// </summary>
        /// <param name="objects">Set of objects required for the form.</param>
        public void SetObjects(ESRI.ArcGIS.esriSystem.ISet objects)
        {
            try
            {
                // Recurse through the objects
                objects.Reset();
                for (int i = 0; i < objects.Count; i++)
                {
                    object currObject = objects.Next();
                    // Find the properties to be set.
                    if (currObject is IPropertySet)
                    {
                        IPropertySet uiParameters = (IPropertySet)currObject;
                        object names, values;
                        uiParameters.GetAllProperties(out names, out values);

                        bool disableForm = false;
                        try { disableForm = Convert.ToBoolean(uiParameters.GetProperty("RFxPropPageIsReadOnly")); }
                        catch (Exception) { }

                        if (disableForm)
                            isFormReadOnly = true;
                        else
                            isFormReadOnly = false;

                        // Check if the arguments object exists in the property set.
                        object functionArgument = null;
                        try{ functionArgument = uiParameters.GetProperty("RFxArgument"); }
                        catch (Exception) {}
                        // If not, the form is in create mode.
                        if (functionArgument == null)
                        {
                            #region Create Mode
                            // Create a new arguments object.
                            myArgs = new WatermarkFunctionArguments();
                            // Create a new property and set the arguments object on it.
                            uiParameters.SetProperty("RFxArgument", myArgs);
                            // Check if a default raster is supplied.
                            object defaultRaster = null;
                            try { defaultRaster = uiParameters.GetProperty("RFxDefaultInputRaster"); }
                            catch (Exception) { }
                            if (defaultRaster != null) // If it is, set it to the raster property.
                                myArgs.Raster = defaultRaster;
                            // Check if the form is in template mode.
                            templateMode = (bool)uiParameters.GetProperty("RFxTemplateEditMode");
                            if (templateMode)
                            {
                                // Since we are in create mode already, new variables have to be 
                                // created for each property of the arguments object.
                                #region Create Variables
                                if (defaultRaster != null)
                                {
                                    // If a default raster is supplied and it is a variable,
                                    // there is no need to create one.
                                    if (defaultRaster is IRasterFunctionVariable)
                                        myRasterVar = (IRasterFunctionVariable)defaultRaster;
                                    else
                                    {
                                        // Create variable object for the InputRaster property.
                                        myRasterVar = new RasterFunctionVariableClass();
                                        myRasterVar.Value = defaultRaster;
                                        myRasterVar.Name = "InputRaster";
                                    }
                                }

                                // Create a variable for the BlendPercentage property.
                                myBlendPercentageVar = new RasterFunctionVariableClass();
                                myBlendPercentageVar.Name = "BlendPercentage";
                                // Use the default value from the arguments object
                                myBlendPercentageVar.Value = myArgs.BlendPercentage;

                                // Create a variable for the WatermarkImagePath property.
                                myWatermarkImagePathVar = new RasterFunctionVariableClass();
                                myWatermarkImagePathVar.Name = "WatermarkImagePath";
                                // Use the default value from the arguments object
                                myWatermarkImagePathVar.Value = myArgs.WatermarkImagePath;

                                // Set the variables created as properties on the arguments object.
                                IRasterFunctionArguments rasterFunctionArgs =
                                    (IRasterFunctionArguments)myArgs;
                                rasterFunctionArgs.PutValue("Raster", myRasterVar);
                                rasterFunctionArgs.PutValue("BlendPercentage", myBlendPercentageVar);
                                rasterFunctionArgs.PutValue("WatermarkImagePath", myWatermarkImagePathVar);
                                #endregion
                            }
                            #endregion
                        }
                        else
                        {
                            #region  Edit Mode
                            // Get the arguments object from the property set.
                            myArgs = (IWatermarkFunctionArguments)functionArgument;
                            // Check if the form is in template mode.
                            templateMode = (bool)uiParameters.GetProperty("RFxTemplateEditMode");
                            if (templateMode)
                            {
                                #region Edit Template
                                // In template edit mode, the variables from the arguments object
                                // are extracted.
                                IRasterFunctionArguments rasterFunctionArgs =
                                    (IRasterFunctionArguments)myArgs;
                                object raster = rasterFunctionArgs.GetValue("Raster");
                                object blendPercentage = rasterFunctionArgs.GetValue("BlendPercentage");
                                object watermarkPath = rasterFunctionArgs.GetValue("WatermarkImagePath");
                                // Create or Open the Raster variable.
                                if (raster is IRasterFunctionVariable)
                                    myRasterVar = (IRasterFunctionVariable)raster;
                                else
                                {
                                    myRasterVar = new RasterFunctionVariableClass();
                                    myRasterVar.Name = "InputRaster";
                                    myRasterVar.Value = raster;
                                }
                                // Create or Open the BlendPercentage variable.
                                if (blendPercentage is IRasterFunctionVariable)
                                    myBlendPercentageVar = (IRasterFunctionVariable)blendPercentage;
                                else
                                {
                                    myBlendPercentageVar = new RasterFunctionVariableClass();
                                    myBlendPercentageVar.Name = "BlendPercentage";
                                    myBlendPercentageVar.Value = blendPercentage;
                                }
                                // Create or Open the WatermarkImagePath variable.
                                if (watermarkPath is IRasterFunctionVariable)
                                    myWatermarkImagePathVar = (IRasterFunctionVariable)watermarkPath;
                                else
                                {
                                    myWatermarkImagePathVar = new RasterFunctionVariableClass();
                                    myWatermarkImagePathVar.Name = "WatermarkImagePath";
                                    myWatermarkImagePathVar.Value = watermarkPath;
                                }
                                #endregion
                            }
                            #endregion
                        }
                    }
                }
            }
            catch (Exception exc)
            {
                string errorMsg = exc.Message;
            }
        }

        /// <summary>
        /// Show the form.
        /// </summary>
        public void Show()
        {
            if (isFormReadOnly)
                myForm.Enabled = false;
            else
                myForm.Enabled = true;
            myForm.Show();
        }

        /// <summary>
        /// Get or set the title of the form
        /// </summary>
        public string Title
        {
            get
            {
                return myForm.Text;
            }
            set
            {
                myForm.Text = value;
            }
        }

        /// <summary>
        /// Get the width of the form.
        /// </summary>
        public int Width
        {
            get { return myForm.Width; }
        }

        /// <summary>
        /// Return the help context ID of the form if it exists.
        /// </summary>
        /// <param name="controlID">Control ID for the sheet.</param>
        /// <returns>The context ID.</returns>
        public int get_HelpContextID(int controlID)
        {
            throw new NotImplementedException();
        }
        #endregion

        #region COM Registration Function(s)
        /// <summary>
        /// Register the Property Page with the Raster Function Property Pages
        /// </summary>
        /// <param name="regKey">Key to register.</param>
        [ComRegisterFunction()]
        static void Reg(string regKey)
        {            
            RasterFunctionPropertyPages.Register(regKey);
        }

        /// <summary>
        /// Unregister the Property Page with the Raster Function Property Pages
        /// </summary>
        /// <param name="regKey">Key to unregister.</param>
        [ComUnregisterFunction()]
        static void Unreg(string regKey)
        {
            RasterFunctionPropertyPages.Unregister(regKey);
        }        
        #endregion
    }
}

[Visual Basic .NET]

WatermarkFunctionUIClass.vb

Imports System.Collections.Generic
Imports System.Linq
Imports System.Windows.Forms
Imports System.Runtime.InteropServices
Imports ESRI.ArcGIS.ADF.CATIDs
Imports ESRI.ArcGIS.DataSourcesRaster
Imports ESRI.ArcGIS.esriSystem
Imports ESRI.ArcGIS.Framework
Imports ESRI.ArcGIS.Geodatabase
Imports WatermarkFunction.CustomFunction

Namespace CustomFunction

    <Guid("740860E4-8AD5-4a74-9371-70BAD04E12BE")> _
    <ClassInterface(ClassInterfaceType.None)> _
    <ProgId("CustomFunction.WatermarkFunctionUIClass")> _
    <ComVisible(True)> _
    Public Class WatermarkFunctionUIClass
        Implements IComPropertyPage
#Region "Private Members"
        Private myForm As WatermarkFunctionUIForm ' The UI form object.
        Private myArgs As IWatermarkFunctionArguments ' The watermark function arguments object.
        Private myPriority As Integer ' Priority for the UI page.
        Private myPageSite As IComPropertyPageSite
        Private myHelpFile As String ' Location for the help file if needed.
        Private mySupportedID As UID ' UID for the Raster function supported by the property page.
        Private templateMode As Boolean ' Flag to specify template mode.
        Private isFormReadOnly As Boolean ' Flag to specify whether the UI is in Read-Only Mode.

        Private myRasterVar As IRasterFunctionVariable ' Variable for the Raster property.
        Private myBlendPercentageVar As IRasterFunctionVariable ' Variable for the BlendPercentage property.
        Private myWatermarkImagePathVar As IRasterFunctionVariable ' Variable for WatermarkImagePath property.
#End Region

        Public Sub New()
            myForm = New WatermarkFunctionUIForm()
            myArgs = Nothing
            myPriority = 0
            myPageSite = Nothing
            myHelpFile = ""
            mySupportedID = New UIDClass()
            mySupportedID.Value = "{" & "637D3707-16B6-48d9-A970-7BC2CD99FB44" & "}"
            templateMode = False
            isFormReadOnly = False

            myRasterVar = Nothing
            myBlendPercentageVar = Nothing
            myWatermarkImagePathVar = Nothing
        End Sub

#Region "IComPropertyPage Members"
        ''' <summary>
        ''' Activate the form. 
        ''' </summary>
        ''' <returns>Handle to the form</returns>
        Public Function Activate() As Integer Implements IComPropertyPage.Activate
            If templateMode Then
                ' In template mode, set the form values using the RasterFunctionVariables
                myForm.BlendPercentage = CDbl(myBlendPercentageVar.Value)
                myForm.WatermarkImagePath = DirectCast(myWatermarkImagePathVar.Value, String)
                myForm.InputRaster = myRasterVar
            Else
                ' Otherwise use the arguments object to update the form values.
                myForm.BlendPercentage = myArgs.BlendPercentage
                myForm.WatermarkImagePath = myArgs.WatermarkImagePath
                myForm.InputRaster = myArgs.Raster
            End If
            myForm.UpdateUI()
            myForm.Activate()
            Return myForm.Handle.ToInt32()
        End Function

        ''' <summary>
        ''' Check if the form is applicable to the given set of objects. In this case
        ''' only the Raster Function object is used to check compatibility.
        ''' </summary>
        ''' <param name="objects">Set of object to check against.</param>
        ''' <returns>Flag to specify whether the form is applicable.</returns>
        Public Function Applies(ByVal objects As ESRI.ArcGIS.esriSystem.ISet) As Boolean Implements IComPropertyPage.Applies
            objects.Reset()
            For i As Integer = 0 To objects.Count - 1
                Dim currObject As Object = objects.[Next]()
                If TypeOf currObject Is IRasterFunction Then
                    Dim rasterFunction As IRasterFunction = DirectCast(currObject, IRasterFunction)
                    If TypeOf rasterFunction Is IPersistVariant Then
                        Dim myVariantObject As IPersistVariant = DirectCast(rasterFunction, IPersistVariant)
			' Compare the ID from the function object with the ID's supported by this UI page.
                        If myVariantObject.ID.Compare(mySupportedID) Then
                            Return True
                        Else
                            Return False
                        End If
                    Else
                        Return False
                    End If
                End If
            Next
            Return False
        End Function

        ''' <summary>
        ''' Apply the properties set in the form to the arguments object.
        ''' </summary>
        Public Sub Apply() Implements IComPropertyPage.Apply
		If Not isFormReadOnly Then
			' If the form is read only, do not update.
		If templateMode Then
                ' If in template mode, use the values from the page to
                ' update the variables.
                If myForm.InputRaster IsNot Nothing Then
                    If TypeOf myForm.InputRaster Is IRasterFunctionVariable Then
                        myRasterVar = DirectCast(myForm.InputRaster, IRasterFunctionVariable)
                    Else
                        myRasterVar.Value = myForm.InputRaster
                    End If
                End If
                myBlendPercentageVar.Value = myForm.BlendPercentage
                myWatermarkImagePathVar.Value = myForm.WatermarkImagePath
                ' Then set the variables on the arguments object.
                Dim rasterFunctionArgs As IRasterFunctionArguments = DirectCast(myArgs, IRasterFunctionArguments)
                rasterFunctionArgs.PutValue("Raster", myRasterVar)
                rasterFunctionArgs.PutValue("BlendPercentage", myBlendPercentageVar)
                rasterFunctionArgs.PutValue("WatermarkImagePath", myWatermarkImagePathVar)
            ElseIf myArgs IsNot Nothing Then
                ' If not in template mode, update the arguments object
                ' with the values from the form.
                myArgs.BlendPercentage = myForm.BlendPercentage
                myArgs.WatermarkImagePath = myForm.WatermarkImagePath
                If myForm.InputRaster IsNot Nothing Then
                    myArgs.Raster = myForm.InputRaster
                End If
            End If
	    End If

            myForm.IsFormDirty = False
        End Sub

        ''' <summary>
        ''' Do not set any properties set in the form
        ''' </summary>
        Public Sub Cancel() Implements IComPropertyPage.Cancel
            myForm.IsFormDirty = False
        End Sub

        ''' <summary>
        ''' Shut down the form and destroy the object.
        ''' </summary>
        Public Sub Deactivate() Implements IComPropertyPage.Deactivate
            myForm.Close()
            myForm.Dispose()
            myForm = Nothing
        End Sub

        ''' <summary>
        ''' Return the height of the form.
        ''' </summary>
        Public ReadOnly Property Height() As Integer Implements IComPropertyPage.Height
            Get
                Return myForm.Height
            End Get
        End Property

        ''' <summary>
        ''' Returns the path to the helpfile associated with the form.
        ''' </summary>
        Public ReadOnly Property HelpFile() As String Implements IComPropertyPage.HelpFile
            Get
                Return myHelpFile
            End Get
        End Property

        ''' <summary>
        ''' Hide the form.
        ''' </summary>
        Public Sub Hide() Implements IComPropertyPage.Hide
            myForm.Hide()
        End Sub

        ''' <summary>
        ''' Flag to specify if the form has been changed.
        ''' </summary>
        Public ReadOnly Property IsPageDirty() As Boolean Implements IComPropertyPage.IsPageDirty
            Get
                Return myForm.IsFormDirty
            End Get
        End Property

        ''' <summary>
        ''' Set the pagesite for the form.
        ''' </summary>
        Public WriteOnly Property PageSite() As IComPropertyPageSite Implements IComPropertyPage.PageSite
            Set(ByVal value As IComPropertyPageSite)
                myPageSite = value
            End Set
        End Property

        ''' <summary>
        ''' Get or set the priority for the form.
        ''' </summary>
        Public Property Priority() As Integer Implements IComPropertyPage.Priority
            Get
                Return myPriority
            End Get
            Set(ByVal value As Integer)
                myPriority = value
            End Set
        End Property

        ''' <summary>
        ''' Set the necessary objects required for the form. In this case
        ''' the form is given an arguments object in edit mode, or is required 
        ''' to create one in create mode. After getting or creating the arguments
        ''' object, template mode is checked for and handled. The template mode 
        ''' requires all parameters of the arguments object to converted to variables.
        ''' </summary>
        ''' <param name="objects">Set of objects required for the form.</param>
        Public Sub SetObjects(ByVal objects As ESRI.ArcGIS.esriSystem.ISet) Implements IComPropertyPage.SetObjects
            Try
                ' Recurse through the objects
                objects.Reset()
                For i As Integer = 0 To objects.Count - 1
                    Dim currObject As Object = objects.[Next]()
                    ' Find the properties to be set.
                    If TypeOf currObject Is IPropertySet Then
                        Dim uiParameters As IPropertySet = DirectCast(currObject, IPropertySet)
                        Dim names As Object = 0, values As Object = 0
                        uiParameters.GetAllProperties(names, values)

                        Dim disableForm As Boolean = False
                        Try
                            disableForm = Convert.ToBoolean(uiParameters.GetProperty("RFxPropPageIsReadOnly"))
                        Catch generatedExceptionName As Exception
                        End Try

                        If disableForm Then
                            isFormReadOnly = True
                        Else
                            isFormReadOnly = False
                        End If

                        ' Check if the arguments object exists in the property set.
                        Dim functionArgument As Object = Nothing
                        Try
                            functionArgument = uiParameters.GetProperty("RFxArgument")
                        Catch generatedExceptionName As Exception
                        End Try
                        ' If not, the form is in create mode.
                        If functionArgument Is Nothing Then
                            '#Region "Create Mode"
                            ' Create a new arguments object.
                            myArgs = New WatermarkFunctionArguments()
                            ' Create a new property and set the arguments object on it.
                            uiParameters.SetProperty("RFxArgument", myArgs)
                            ' Check if a default raster is supplied.
                            Dim defaultRaster As Object = Nothing
                            Try
                                defaultRaster = uiParameters.GetProperty("RFxDefaultInputRaster")
                            Catch generatedExceptionName As Exception
                            End Try
                            If defaultRaster IsNot Nothing Then ' If it is, set is to the raster property.
                                myArgs.Raster = defaultRaster
                            End If
                            ' Check if the form is in template mode.
                            templateMode = CBool(uiParameters.GetProperty("RFxTemplateEditMode"))
                            If templateMode Then
                                ' Since we are in create mode already, new variables have to be 
                                ' created for each property of the arguments object.
                                '#Region "Create Variables"
                                If defaultRaster IsNot Nothing Then
                                    ' If a default raster is supplied and it is a variable,
                                    ' there is no need to create one.
                                    If TypeOf defaultRaster Is IRasterFunctionVariable Then
                                        myRasterVar = DirectCast(defaultRaster, IRasterFunctionVariable)
                                    Else
                                        ' Create variable object for the InputRaster property.
                                        myRasterVar = New RasterFunctionVariableClass()
                                        myRasterVar.Value = defaultRaster
                                        myRasterVar.Name = "InputRaster"
                                    End If
                                End If

                                ' Create a variable for the BlendPercentage property.
                                myBlendPercentageVar = New RasterFunctionVariableClass()
                                myBlendPercentageVar.Name = "BlendPercentage"
                                ' Use the default value from the arguments object
                                myBlendPercentageVar.Value = myArgs.BlendPercentage

                                ' Create a variable for the WatermarkImagePath property.
                                myWatermarkImagePathVar = New RasterFunctionVariableClass()
                                myWatermarkImagePathVar.Name = "WatermarkImagePath"
                                ' Use the default value from the arguments object
                                myWatermarkImagePathVar.Value = myArgs.WatermarkImagePath

                                ' Set the variables created as properties on the arguments object.
                                Dim rasterFunctionArgs As IRasterFunctionArguments = DirectCast(myArgs, IRasterFunctionArguments)
                                rasterFunctionArgs.PutValue("Raster", myRasterVar)
                                rasterFunctionArgs.PutValue("BlendPercentage", myBlendPercentageVar)
                                '#End Region
                                rasterFunctionArgs.PutValue("WatermarkImagePath", myWatermarkImagePathVar)
                                '#End Region
                            End If
                        Else
                            '#Region "Edit Mode"
                            ' Get the arguments object from the property set.
                            myArgs = DirectCast(functionArgument, IWatermarkFunctionArguments)
                            ' Check if the form is in template mode.
                            templateMode = CBool(uiParameters.GetProperty("RFxTemplateEditMode"))
                            If templateMode Then
                                '#Region "Edit Template"
                                ' In template edit mode, the variables from the arguments object
                                ' are extracted.
                                Dim rasterFunctionArgs As IRasterFunctionArguments = DirectCast(myArgs, IRasterFunctionArguments)
                                Dim raster As Object = rasterFunctionArgs.GetValue("Raster")
                                Dim blendPercentage As Object = rasterFunctionArgs.GetValue("BlendPercentage")
                                Dim watermarkPath As Object = rasterFunctionArgs.GetValue("WatermarkImagePath")
                                '  Create or Open the Raster variable.
                                If TypeOf raster Is IRasterFunctionVariable Then
                                    myRasterVar = DirectCast(raster, IRasterFunctionVariable)
                                Else
                                    myRasterVar = New RasterFunctionVariableClass()
                                    myRasterVar.Name = "InputRaster"
                                    myRasterVar.Value = raster
                                End If
                                ' Create or Open the BlendPercentage variable.
                                If TypeOf blendPercentage Is IRasterFunctionVariable Then
                                    myBlendPercentageVar = DirectCast(blendPercentage, IRasterFunctionVariable)
                                Else
                                    myBlendPercentageVar = New RasterFunctionVariableClass()
                                    myBlendPercentageVar.Name = "BlendPercentage"
                                    myBlendPercentageVar.Value = blendPercentage
                                End If
                                ' Create or Open the WatermarkImagePath variable.
                                If TypeOf watermarkPath Is IRasterFunctionVariable Then
                                    myWatermarkImagePathVar = DirectCast(watermarkPath, IRasterFunctionVariable)
                                Else
                                    myWatermarkImagePathVar = New RasterFunctionVariableClass()
                                    myWatermarkImagePathVar.Name = "WatermarkImagePath"
                                    myWatermarkImagePathVar.Value = watermarkPath
                                    '#End Region
                                End If
                                '#End Region
                            End If
                        End If
                    End If
                Next
            Catch exc As Exception
                Dim errorMsg As String = exc.Message
            End Try
        End Sub

        ''' <summary>
        ''' Show the form.
        ''' </summary>
        Public Sub Show() Implements IComPropertyPage.Show
		If isFormReadOnly Then
			myForm.Enabled = False
		Else
			myForm.Enabled = True
		End If
		myForm.Show()
        End Sub

        ''' <summary>
        ''' Get or set the title of the form
        ''' </summary>
        Public Property Title() As String Implements IComPropertyPage.Title
            Get
                Return myForm.Text
            End Get
            Set(ByVal value As String)
                myForm.Text = value
            End Set
        End Property

        ''' <summary>
        ''' Get the width of the form.
        ''' </summary>
        Public ReadOnly Property Width() As Integer Implements IComPropertyPage.Width
            Get
                Return myForm.Width
            End Get
        End Property

        ''' <summary>
        ''' Return the help context ID of the form if it exists.
        ''' </summary>
        ''' <param name="controlID">Control ID for the sheet.</param>
        ''' <returns>The context ID.</returns>
        Public ReadOnly Property HelpContextID(ByVal controlID As Integer) As Integer Implements IComPropertyPage.HelpContextID
            Get
                Throw New NotImplementedException()
            End Get
        End Property

#End Region

#Region "COM Registration Function(s)"
        ''' <summary>
        ''' Register the Property Page with the Raster Function Property Pages
        ''' </summary>
        ''' <param name="regKey">Key to register.</param>
        <ComRegisterFunction()> _
        Private Shared Sub Reg(ByVal regKey As String)
            RasterFunctionPropertyPages.Register(regKey)
        End Sub

        ''' <summary>
        ''' Unregister the Property Page with the Raster Function Property Pages
        ''' </summary>
        ''' <param name="regKey">Key to unregister.</param>
        <ComUnregisterFunction()> _
        Private Shared Sub Unreg(ByVal regKey As String)
            RasterFunctionPropertyPages.Unregister(regKey)
        End Sub
#End Region

    End Class

End Namespace