Step 1) Create Basic ASP.NET website as shown below
Step 2) select .NET Framework 4. Choose ASP.NE Empty Web Application
Step3) Add new Generic handler class
select project-->right click-->Add->New Item then select Generic Handler template as shown below
Step 4) Name Generic Handler s ImgHandler.cs
Replace ImgHandler.cs with the following content
using System;
using System.Web;
namespace WebApplication3
{
public class ImgHandler : IHttpHandler
{
/// <summary>
/// You will need to configure this handler in the web.config file of your
/// web and register it with IIS before being able to use it. For more information
/// see the following link: http://go.microsoft.com/?linkid=8101007
/// </summary>
#region IHttpHandler Members
public bool IsReusable
{
// Return false in case your Managed Handler cannot be reused for another request.
// Usually this would be false in case you have some state information preserved per request.
get { return true; }
}
public void ProcessRequest(HttpContext context)
{
HttpRequest req=context.Request;
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(context.Server.MapPath(context.Request.FilePath));
bmp.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
context.Response.ContentType = "image/jpeg";
bmp.Dispose();
}
#endregion
}
}
Step 2) select .NET Framework 4. Choose ASP.NE Empty Web Application
Step3) Add new Generic handler class
select project-->right click-->Add->New Item then select Generic Handler template as shown below
Step 4) Name Generic Handler s ImgHandler.cs
Replace ImgHandler.cs with the following content
using System;
using System.Web;
namespace WebApplication3
{
public class ImgHandler : IHttpHandler
{
/// <summary>
/// You will need to configure this handler in the web.config file of your
/// web and register it with IIS before being able to use it. For more information
/// see the following link: http://go.microsoft.com/?linkid=8101007
/// </summary>
#region IHttpHandler Members
public bool IsReusable
{
// Return false in case your Managed Handler cannot be reused for another request.
// Usually this would be false in case you have some state information preserved per request.
get { return true; }
}
public void ProcessRequest(HttpContext context)
{
HttpRequest req=context.Request;
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(context.Server.MapPath(context.Request.FilePath));
bmp.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
context.Response.ContentType = "image/jpeg";
bmp.Dispose();
}
#endregion
}
}
Step 5) Add Handler to web.config file
<System.Web>
<httpHandlers>
<add verb="*" validate="true" type="WebApplication3.ImgHandler,WebApplication3" path="*.jpg"/>
</httpHandlers>
</system.web>
</System.Web>
Step 6) Add default.aspx page
then add
<body>
<form id="form1" runat="server">
<div>
<img src="image1.jpg" alt="img not found" />
</div>
</form>
</body
Ur handler will be executed.
Note Image should be in root folder of the web application
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