// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 



using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page, ICallbackEventHandler 
{
    public string sCallBackFunctionInvocation;
    private string returnstring = "";

    public void RaiseCallbackEvent(string eventArgs)
    {
        if (eventArgs.Contains("tbx"))
        {
           ChangeTextBoxServer(eventArgs);
       }
       else if (eventArgs.Contains("cbx"))
       {
           ChangeCheckBoxServer(eventArgs);
       }
       else if (eventArgs.Contains("map1"))
       {
           ChangeMapServer();
       }
    }

    public string GetCallbackResult()
    {
        return returnstring;
    }

    public void ChangeTextBoxServer(string ea)
    {
        char[] parser_char = { ',' };
        string[] messages = ea.Split(parser_char);
        string value = messages[1];
        Session["TextBox1Value"] = value;
    }

    public void ChangeCheckBoxServer(string ea)
    {
        char[] parser_char = { ',' };
        string[] messages = ea.Split(parser_char);
        string value = messages[1];
        Session["CheckBox1Value"] = value;
    }

    public void ChangeMapServer()
    {
        DataSet ds = (DataSet) Session["VegDataset"];
        
        if (ds != null)
        {
            GridView1.DataSource = ds.Tables[0];
            GridView1.DataBind();

            using (System.IO.StringWriter sw = new System.IO.StringWriter())
            {
                HtmlTextWriter htw = new HtmlTextWriter(sw);
                GridView1.RenderControl(htw);
                htw.Flush();
                returnstring = sw.ToString();
            }
        }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Session["TextBox1Value"] = "10000";
            Session["CheckBox1Value"] = "false";
            Session["VegDataset"] = null;
                       
        }
        CheckBox1.Attributes.Add("onclick", "ChangeContext('CheckBox1')");
        TextBox1.Attributes.Add("onblur", "ChangeContext('TextBox1')");
        Map1.Attributes.Add("onmouseup", "ChangeContext('Map1')");
        sCallBackFunctionInvocation = Page.ClientScript.GetCallbackEventReference(this, "message", "HandleResponse", "context", "postBackError", true);
    }
   
}