Called when an item in the Gallery is clicked.

Namespace:  ESRI.ArcGISExplorer.Application

Assembly:  ESRI.ArcGISExplorer.Application (in ESRI.ArcGISExplorer.Application.dll) Version: 2.0.0.1500 (2.0.0.1500)

Syntax

C#
public virtual void OnClick(
	GalleryItem item
)
Visual Basic (Declaration)
Public Overridable Sub OnClick ( _
	item As GalleryItem _
)

Parameters

item
Type: ESRI.ArcGISExplorer.Application..::.GalleryItem

A GalleryItem object which represents the item clicked on by the user.

Remarks

Override the OnClick method to run code when the user clicks on an item in the Gallery. This method provides an opportunity to identify the item clicked, and take different actions conditional on which item from the Gallery was clicked by the user. The main action of a Gallery is normally found in this method.

Examples

The example code below shows a very simple Gallery class which displays 3 items; clicking on each item will zoom the display so that a specific location is in the center of the map, and the current altitude/map scale is maintained.
CopyC#
using System;
using System.Text;

// Import some typical namespaces.
using System.Windows.Forms;
using System.Drawing;

using ESRI.ArcGISExplorer.Application;
using ESRI.ArcGISExplorer.Mapping;

namespace NewGallery
{
  public class NewGallery : ESRI.ArcGISExplorer.Application.Gallery
  {

    public NewGallery()
    {
      // Read in an image from the icons installed with the SDK to use as an icon.
      string imgPath = Environment.GetEnvironmentVariable("ArcGIS_E3SDK") + @"\Icons\View32.png";
      Image btnImage = Image.FromFile(imgPath);

      // Add some items to the gallery.
      this.Items.Add(new GalleryItem("Redlands", btnImage, "View Redlands, CA, USA"));
      this.Items.Add(new GalleryItem("Edinburgh", btnImage, "View Edinburgh, UK"));
      this.Items.Add(new GalleryItem("Portland", btnImage, "View Portland, ME, USA"));
    }

    public override void OnClick(GalleryItem item)
    {
      // Work out which item was clicked.
      ESRI.ArcGISExplorer.Geometry.Point location = null;
      if (item.Caption.StartsWith("Redlands"))
      {
        location = new ESRI.ArcGISExplorer.Geometry.Point(-117.171315683414, 34.0502770959205);
      }
      else if (item.Caption.StartsWith("Edinburgh"))
      {
        location = new ESRI.ArcGISExplorer.Geometry.Point(-3.19999077085197, 55.9500400262958);
      }
      else if (item.Caption.StartsWith("Portland"))
      {
        location = new ESRI.ArcGISExplorer.Geometry.Point(-70.2624358181778, 43.6546676468125);
      }
      // Zoom to the location, maintaining altitude / map scale.
      MapDisplay disp = ESRI.ArcGISExplorer.Application.Application.ActiveMapDisplay;
      double alt = disp.Altitude;
      disp.ZoomTo(location, alt);
    }
  }
}
CopyVB.NET
Imports System
Imports System.Text

' Import some typical namespaces.
Imports System.Windows.Forms
Imports System.Drawing

' Additional ArcGIS Explorer namespaces.
Imports ESRI.ArcGISExplorer.Application
Imports ESRI.ArcGISExplorer.Mapping

Public Class NewGallery
  Inherits ESRI.ArcGISExplorer.Application.Gallery

  Public Sub New()
    ' Read in an image from the icons installed with the SDK to use as an icon.
    Dim imgPath As String = Environment.GetEnvironmentVariable("ArcGIS_E3SDK") & "\Icons\View32.png"
    Dim btnImage As Image = Image.FromFile(imgPath)

    ' Add some items to the gallery.
    Me.Items.Add(New GalleryItem("Redlands", btnImage, "View Redlands, CA, USA"))
    Me.Items.Add(New GalleryItem("Edinburgh", btnImage, "View Edinburgh, UK"))
    Me.Items.Add(New GalleryItem("Portland", btnImage, "View Portland, ME, USA"))

  End Sub

  Public Overrides Sub OnClick(ByVal item As GalleryItem)
    ' Work out which item was clicked.
    Dim location As ESRI.ArcGISExplorer.Geometry.Point = Nothing
    If (item.Caption.StartsWith("Redlands")) Then
      location = New ESRI.ArcGISExplorer.Geometry.Point(-117.171315683414, 34.0502770959205)
    ElseIf (item.Caption.StartsWith("Edinburgh")) Then
      location = New ESRI.ArcGISExplorer.Geometry.Point(-3.19999077085197, 55.9500400262958)
    ElseIf (item.Caption.StartsWith("Portland")) Then
      location = New ESRI.ArcGISExplorer.Geometry.Point(-70.2624358181778, 43.6546676468125)
    End If
        ' Zoom to the location, maintaining altitude / map scale.
    Dim disp As MapDisplay = ESRI.ArcGISExplorer.Application.Application.ActiveMapDisplay
    Dim alt As Double = disp.Altitude
    disp.ZoomTo(location, alt)
  End Sub

End Class

See Also