defaultcs.aspx.cs

Telerik是很大的第三方软件制造商

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using Telerik.QuickStart;
using Telerik.WebControls;

namespace Telerik.TreeViewExamplesCSharp.DragAndDropToHtmlElement
{
	/// <summary>
	/// Summary description for _Default.
	/// </summary>
	public class DefaultCS: XhtmlPage
	{	
		protected RadTreeView RadTree1;		
		protected Label DragMessage;
		protected System.Web.UI.WebControls.TextBox NodeText;
		protected System.Web.UI.WebControls.Button SubmitButton;
		protected System.Web.UI.HtmlControls.HtmlInputHidden prompt_result;		
		protected DataGrid DataGrid1;

		private void PopulateGrid()
		{
			string [] values = { "One", "Two", "Three" };

			DataTable dt = new DataTable();
			dt.Columns.Add("Text");
			dt.Columns.Add("Value");
			dt.Columns.Add("Category");
			dt.Rows.Add(values);
			dt.Rows.Add(values);
			dt.Rows.Add(values);
			Session["DataTable"] = dt;
			
			DataGrid1.DataSource = dt;
			DataGrid1.DataBind();
		}

		private void AddRowToGrid(DataTable dt, RadTreeNode node)
		{
			string [] values = { node.Text, node.Value, node.Category };			
			dt.Rows.Add(values);

			DataGrid1.DataSource = dt;
			DataGrid1.DataBind();
		}

		protected void HandleDrop(object sender, RadTreeNodeEventArgs NodeEvent)
		{
			RadTreeNode sourceNode = NodeEvent.SourceDragNode;
			if (NodeEvent.HtmlElementID == "Grid")
			{			
				DataTable dt = (DataTable) Session["DataTable"];				
				AddRowToGrid(dt, sourceNode);
				DragMessage.Text = "You added <b>" + sourceNode.Text + @"</b> to the Grid.";
			}				
		}

		private void Page_Load(object sender, System.EventArgs e)
		{
			if (!Page.IsPostBack)
			{
				PopulateGrid();
			}

			DragMessage.Text = "Text-field is <b>empty</b>";
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		///		Required method for Designer support - do not modify
		///		the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.SubmitButton.Click += new System.EventHandler(this.SubmitButton_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void SubmitButton_Click(object sender, System.EventArgs e)
		{
			if (NodeText.Text != String.Empty)
				DragMessage.Text = "The text-field contains the value: <b>" + NodeText.Text + "</b>";
		}


	}
}