Handler.ashx file code :
public class ImageHandler : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
Int32 theID;
if (context.Request.QueryString["AdminId"] != null)
theID = Convert.ToInt32(context.Request.QueryString["AdminId"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpeg";
Stream strm = DisplayImage(theID);
byte[] buffer = new byte[2048];
int byteSeq = strm.Read(buffer, 0, 2048);
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 2048);
}
}
public Stream DisplayImage(int theID)
{
SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString.ToString());
string sql = "SELECT Image FROM Admins WHERE AdminId = @AdminId";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@AdminId", theID);
connection.Open();
object theImg = cmd.ExecuteScalar();
try
{
return new MemoryStream((byte[])theImg);
}
catch
{
return null;
}
finally
{
connection.Close();
}
}
public bool IsReusable
{
get
{
return false;
}
}
}
If Image record null in database then i want to set default image in return value , So how can do it
