| Author: Deepa 12 Aug 2008 | Member Level: Diamond | Rating:  Points: 6 |
hi Thirumal,
here is a code m using and its working fine hope this ll help u
string id;
id = EmpNum.Text;
//lblResult.Text = String.Format("Employee ID is {0}", id);
Image1.ImageUrl = "~/ShowImage.ashx?id=" + id;
------------------
ShowImage.ashx
<%@ WebHandler Language="C#" Class="ShowImage" %>
using System;
using System.Configuration;
using System.Web;
using System.IO;
using System.Data;
using System.Data.SqlClient;
public class ShowImage : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
string empno;
if (context.Request.QueryString["id"] != null)
empno = Convert.ToString(context.Request.QueryString["id"]);
//empno = Convert.ToInt32(context.Request.QueryString["id"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpg";
Stream strm = ShowEmpImage(empno);
byte[] buffer = new byte[4096];
int byteSeq = strm.Read(buffer, 0, 4096);
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 4096);
}
//context.Response.BinaryWrite(buffer);
}
public Stream ShowEmpImage(string empno)
{
string conn = ConfigurationManager.AppSettings["strConn"];
SqlConnection connection = new SqlConnection(conn);
string sql = "SELECT EmployeeImage FROM Employee WHERE EmployeeNumber = @EmployeeNumber";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@EmployeeNumber", empno);
connection.Open();
object img = cmd.ExecuteScalar();
try
{
return new MemoryStream((byte[])img);
}
catch
{
return null;
}
finally
{
connection.Close();
}
}
public bool IsReusable
{
get
{
return false;
}
}
}
|
| Author: Rathi 12 Aug 2008 | Member Level: Gold | Rating: Points: 6 |
hai
try this
using handler page
----------
Imports System
Imports System.Web
Imports System.Data.SqlClient
Imports System.Data
Public Class showHandler : Implements IHttpHandler
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim con As String = ConfigurationManager.ConnectionStrings("ExampleConnection").ConnectionString
Dim connection As SqlConnection = New SqlConnection(con)
connection.Open()
Dim sql As String = "Select Image from art where AId=@ImageId"
Dim cmd As SqlCommand = New SqlCommand(sql, connection)
cmd.Parameters.Add("@ImageId", SqlDbType.Int).Value = context.Request.QueryString("AId")
cmd.Prepare()
Dim dr As SqlDataReader = cmd.ExecuteReader()
dr.Read()
context.Response.ContentType = "image/pjpeg"
context.Response.BinaryWrite(CType(dr("Image"), Byte()))
connection.Close()
End Sub
Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
Get
Return False
End Get
End Property
End Class
aspx page
---------
Image1.ImageUrl = "~/showHandler.ashx?AId=" + Request.QueryString("AId")
Image1.Height = "100"
Image1.Width = "100"
Image1.BorderStyle = BorderStyle.Double
Dim ImageID As Integer = Convert.ToInt32(Request.QueryString("AId"))
cmd = New SqlCommand
cmd.Connection = con
cmd.CommandType = Data.CommandType.Text
cmd.CommandText = "SELECT [Image],[Destin],[Mimetype] FROM [artical] WHERE [AId] = @ImageID"
cmd.Parameters.AddWithValue("@ImageID", ImageID)
dr = cmd.ExecuteReader()
.
.
.
.
.etc...
|
| Author: vipul 12 Aug 2008 | Member Level: Diamond | Rating: Points: 2 |
hi,
your code is write but check that your data is exit or not.
vipul,
http://dongavipul.blogspot.com
Please Rate This Answer If They Helpful
Thanks & Regards
Patel Vipul
|
| Author: cnu 12 Aug 2008 | Member Level: Gold | Rating: Points: 6 |
using System;
using System.Configuration;
using System.Web;
using System.IO;
using System.Data;
using System.Data.SqlClient;
public class ShowImage : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
string empno;
if (context.Request.QueryString["id"] != null)
empno = Convert.ToString(context.Request.QueryString["id"]);
//empno = Convert.ToInt32(context.Request.QueryString["id"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpg";
Stream strm = ShowEmpImage(empno);
byte[] buffer = new byte[4096];
int byteSeq = strm.Read(buffer, 0, 4096);
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 4096);
}
//context.Response.BinaryWrite(buffer);
}
public Stream ShowEmpImage(string empno)
{
string conn = ConfigurationManager.AppSettings["strConn"];
SqlConnection connection = new SqlConnection(conn);
string sql = "SELECT EmployeeImage FROM Employee WHERE EmployeeNumber = @EmployeeNumber";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@EmployeeNumber", empno);
connection.Open();
object img = cmd.ExecuteScalar();
try
{
return new MemoryStream((byte[])img);
}
catch
{
return null;
}
finally
{
connection.Close();
}
}
public bool IsReusable
{
get
{
return false;
}
}
}
|