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Santhonabin
NA
51
212.8k
image upload/retrieve problem urgent...
Nov 23 2010 12:48 AM
hi..
i want correct coding ..
pls tell me how to correct this error part
send me soon
coding...
ShowImage.ashx
---------------------------------------
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)
{
Int32
empno;
if
(context.Request.QueryString[
"id"
] !=
null
)
empno =
Convert
.ToInt32(context.Request.QueryString[
"id"
]);
else
throw
new
ArgumentException
(
"No parameter specified"
);
context.Response.ContentType =
"image/jpeg"
;
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);
}
}
public
Stream
ShowEmpImage(
int
empno)
{
string
conn =
ConfigurationManager
.ConnectionStrings[
"Connection"
].ConnectionString;
SqlConnection
connection =
new
SqlConnection
(conn);
string
sql =
"SELECT empimg FROM empdetails1 WHERE empid = @ID"
;
SqlCommand
cmd =
new
SqlCommand
(sql, connection);
cmd.CommandType =
CommandType
.Text;
cmd.Parameters.AddWithValue(
"@ID"
, 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
;
}
}
}
----------------------------------
Error:
context.Response.ContentType =
"image/jpeg"
;
No parameter specified
Reply
Answers (
5
)
multiple HTTP uploads
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