public class ImageHandler : IHttpHandler - asp.net

Question

cmd.Parameters.AddWithValue("#id", new system.Guid (imageid));
What using System reference would this require?
Here is the handler:
using System;
using System.Collections.Specialized;
using System.Web;
using System.Web.Configuration;
using System.Web.Security;
using System.Globalization;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
using System.IO;
using System.Web.Profile;
using System.Drawing;
public class ImageHandler : IHttpHandler {
public void ProcessRequest(HttpContext context)
{
string imageid;
if (context.Request.QueryString["id"] != null)
imageid = (context.Request.QueryString["id"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpeg";
Stream strm = ShowProfileImage(imageid.ToString());
byte[] buffer = new byte[8192];
int byteSeq = strm.Read(buffer, 0, 8192);
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 8192);
}
//context.Response.BinaryWrite(buffer);
}
public Stream ShowProfileImage(String imageid)
{
string conn = ConfigurationManager.ConnectionStrings["MyConnectionString1"].ConnectionString;
SqlConnection connection = new SqlConnection(conn);
string sql = "SELECT image FROM Profile WHERE UserId = #id";
SqlCommand cmd = new SqlCommand(sql, connection);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("#id", new system.Guid (imageid));//Failing Here!!!!
connection.Open();
object img = cmd.ExecuteScalar();
try
{
return new MemoryStream((byte[])img);
}
catch
{
return null;
}
finally
{
connection.Close();
}
}
public bool IsReusable
{
get
{
return false;
}
}
}

Answer 1

Maybe typo. Capitalize the first letter of System namespace.
new System.Guid (imageid)