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.CallbackExamplesCSharp.Demos.Gallery
{
	/// <summary>
	/// Summary description for _Default.
	/// </summary>
	public class DefaultCS: XhtmlPage
	{
		protected System.Web.UI.WebControls.Image Image1;
		protected Telerik.WebControls.CallbackButton btnFirst;
		protected Telerik.WebControls.CallbackButton btnStart;
		protected Telerik.WebControls.CallbackButton btnLast;
		protected Telerik.WebControls.CallbackTimer CallbackTimer1;
		protected System.Web.UI.HtmlControls.HtmlImage Img1;
		protected System.Web.UI.WebControls.Label Label1;

		private void Page_Load(object sender, System.EventArgs e)
		{	
			string s = string.Empty;
		}

		#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);
		}
		
		/// <summary>
		///		Required method for Designer support - do not modify
		///		the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{									
			this.btnFirst.Click += new System.EventHandler(this.btnFirst_Click);
			this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
			this.btnLast.Click += new System.EventHandler(this.btnLast_Click);
			this.CallbackTimer1.Tick += new Telerik.WebControls.CallbackTimer.TickEvent(this.CallbackTimer1_Tick);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Next()
		{
			ImageIndex += 1;			
			if (ImageIndex == 9) 
			{				
				ImageIndex = 1;						
			}
			SetImage();
		}

		private void btnFirst_Click(object sender, System.EventArgs e)
		{
			ImageIndex = 1;
			SetImage();
		}

		private void btnLast_Click(object sender, System.EventArgs e)
		{
			ImageIndex = 8;
			SetImage();
		}

		private void SetImage()
		{
			Image1.ImageUrl = "Image" + ImageIndex.ToString() + ".jpg";
			Label1.Text = Image1.ImageUrl;
		}

		private void btnStart_Click(object sender, System.EventArgs e)
		{
			if (btnStart.Text.Equals("Start"))
			{
				CallbackTimer1.Start();	
				btnStart.Text = "Stop";
			}
			else
			{
				CallbackTimer1.Stop();	
				btnStart.Text = "Start";				
			}
		}

		private void CallbackTimer1_Tick(object sender, System.EventArgs args)
		{
			Next();			
		}		

		private int ImageIndex
		{
			get
			{
				if (ViewState["ImageIndex"] == null)
				{
					ViewState["ImageIndex"] = 1;
				}
				return (int) ViewState["ImageIndex"];
			}
			set
			{
				ViewState["ImageIndex"] = value;
			}
		}		


	}
}