public void ProcessRequest(HttpContext context)
{
Int32 imgID;
if (context.Request.QueryString["id"] != null)
{
imgID = Convert.ToInt32(context.Request.QueryString["id"]);
}
else
{
throw new ArgumentException("No parameter specified");
}
byte[] buffer = ShowEmpImage(imgID);
bool temp = false;
string extension = "";
var enc = new ASCIIEncoding();
var header = enc.GetString(buffer);
dbClass db = new dbClass();
extension = db.GetID("select fileExtension from tableName WHERE LOGuid=" + imgID, "fileExtension");
if (extension == null || extension == "")
{
if (buffer[0] == 0x25 && buffer[1] == 0x50 &&
buffer[2] == 0x44 && buffer[3] == 0x46)
{
temp = header.StartsWith("%PDF-");
extension = "application/pdf";
}
else if (buffer[0] == 0xFF && buffer[1] == 0xD8 &&
buffer[2] == 0xFF && buffer[3] == 0xE0)
{
temp = header.StartsWith("%JPG-");
extension = "image/jpeg";
extension = "image/jpg";
}
else if (buffer[0] == 0x89 && buffer[1] == 0x50 &&
buffer[2] == 0x4E && buffer[3] == 0x47)
{
temp = header.StartsWith("%PNG-");
extension = "image/jpeg";
extension = "image/png";
}
else if (buffer[0] == 0x49 && buffer[1] == 0x49 &&
buffer[2] == 0x2A && buffer[3] == 0x00)
{
temp = header.StartsWith("%TIF-");
extension = "image/jpeg";
extension = "image/tiff";
extension = "image/tif";
}
else if (buffer[0] == 0x47 && buffer[1] == 0x49 &&
buffer[2] == 0x46 && buffer[3] == 0x38)
{
temp = header.StartsWith("%GIF-");
extension = "image/jpeg";
extension = "image/gif";
}
else if (buffer[0] == 0x42 && buffer[1] == 0x4D &&
buffer[2] == 0x46 && buffer[3] == 0x38)
{
temp = header.StartsWith("%BMP-");
extension = "image/jpeg";
extension = "image/bmp";
}
else if (buffer[0] == 0x00 && buffer[1] == 0x00 &&
buffer[2] == 0x01 && buffer[3] == 0x00)
{
temp = header.StartsWith("%ICO-");
extension = "image/jpeg";
extension = "image/ico";
}
else
{
extension = "image/jpeg";
}
//else
//extension = "application/pdf";
}
context.Response.ContentType = extension;
context.Response.AddHeader("content-length", buffer.Length.ToString());
context.Response.BinaryWrite(buffer);
}