设置响应报文头 image/jpeg

Response.Clear();
Response.ContentType="image/jpeg";
Byte[] tData=this.Sessionn["tdata"] as Byte[];
if(tData!=null)
{
Sessionn.Remove["tdata"] ;
Response.OutputStream.Write(tData,0,tData.length);
}
Response.Fulsh();
Response.End();