How to use ashx page to image upload

Step 1: Create a ashx Page

Step 2: copy this code into your ashx page.

1. using System;

2. using System.Drawing;

3. using System.IO;

4. using System.Collections;

5. using System.Web;

6. using System.Web.UI;

7. using System.Web.UI.WebControls;

8. using System.Web.Security;

9. using System.Configuration;

10. using System.Data.SqlClient;

11. using System.Data;

12. 
    

13. public class AdvertisementHandler : IHttpHandler 

14. {

15.     SqlConnection sqlCon=new SqlConnection(ConfigurationSettings.AppSettings["connectionstring"]);

16.     SqlCommand sqlCmd;

17.     SqlDataReader rdr = null;

18.     public void ProcessRequest (HttpContext context) {

19. 
    

20.         try

21.         {

22.             sqlCmd = new SqlCommand("Usp_Get_AdvertisementByid",sqlCon);

23.             sqlCmd.CommandType = CommandType.StoredProcedure;

24.             sqlCon.Open();

25.             sqlCmd.Parameters.Add(new SqlParameter("@AdvertisementId", context.Request.QueryString["AdverTisementId"].ToString()));

26.             rdr = sqlCmd.ExecuteReader();

27.             while (rdr.Read())

28.             {

29.                 context.Response.ContentType = "image/jpeg";

30.                 context.Response.BinaryWrite((byte[])rdr["AdvertisementFile"]);

31.             }

32.             if (rdr != null)

33.                 rdr.Close();

35.             /// if developer has to load static image then use this

36.             ///  ReadImage(WriteImage(context.Server.MapPath("~/image/banner.jpg")), context);

37.         }

38.         catch (Exception ex)

39.         {

40.             ReadImage(WriteImage(context.Server.MapPath("~/image/ad1.jpg")), context);

41.         }

42.         finally

43.         {

44.             sqlCon.Close();

45.         }

46.     }

47. 
    

48.     private byte[] WriteImage(string filename)//convert image file to byte[]

49.     {

50.         FileStream fs = File.OpenRead(filename);

51.         byte[] buffer = new byte[fs.Length];

52.         fs.Read(buffer, 0, buffer.Length);

53.         fs.Close();

54.         return buffer;

55.     }

56.     private void ReadImage(byte[] img,HttpContext context)//show the byte[] image

57.     {

58.         // Set up the response settings

59.         context.Response.ContentType = "image/jpg";

60.         context.Response.Cache.SetCacheability(HttpCacheability.Public);

61.         context.Response.BufferOutput = false;

62. 
    

63.         Stream stream = new MemoryStream(img);

64.         const int buffersize = 1024 * 16;

65.         byte[] buffer = new byte[buffersize];

66.         int count = stream.Read(buffer, 0, buffersize);

67.         while (count > 0)

68.         {

69.             context.Response.OutputStream.Write(buffer, 0, count);

70.             count = stream.Read(buffer, 0, buffersize);

71.         }

72.     }

73.     public bool IsReusable

74.     {

75.         get

76.         {

77.             return false;

78.         }

79.     }

80. }

Then  Set Image Url of control Image

Img.ImageUrl = 

"Handler.ashx?AdverTisementId="+dsFile.Tables[0].Rows[i]["AdvertiseMentId"].ToString() + "";