Detect click on an image (C#) : Image « HTML Controls « ASP.NET Tutorial






  1. ASP.NET Tutorial
  2. HTML Controls
  3. Image
File: Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ImageTest" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form ID="form1" runat="server">
    <div>
    
      <h1>Click on the Image </h1>

      <input type="image"
             src="http://www.java2s.com/style/logo.png" 
             ID="ImgButton"
             runat="server" OnServerClick="ImgButton_ServerClick" />
      <br />
      <div ID="Result" 
            runat="server"/>
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs


using System;
using System.Data;
using System.Configuration;
using System.Collections;
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 ImageTest : System.Web.UI.Page
{
  protected void ImgButton_ServerClick(Object sender, ImageClickEventArgs e)
  {
    Result.InnerText = "You clicked at (" + e.X.ToString() + ", " + e.Y.ToString() + "). ";

    if ((e.Y < 100) && (e.Y > 20) && (e.X > 20) && (e.X < 275))
    {
      Result.InnerText += "You clicked on the button surface.";
    }
    else
    {
      Result.InnerText += "You clicked the button border.";
    }
        Response.Redirect("http://www.java2s.com");
  }

}








4.11.Image
4.11.1.Detect click on an image (C#)