c# WinFormApplication WinFormApplication

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This is the code that I've tried to write. I first tell the "LinkSprite JPEG Camera" to take a picture and then I read the JPEG file contents. There are no errors and the code is working, but the problem is the result comes was very slowly, I've seen "done" i.e. reached to FFD9 after minute. The message of the message box emerged after that much time. I want get the image which is stored in the camera buffer after sending the "take picture" command and to display it in the form. The camera is: LinkSprite JPEG Camera The Manual Mbed Example ( Test program ) My code is:

//public static byte[] ReceivedMsg = new byte[256];
//public static int factor = 0x0000;
//public static UInt16 M = 0;
//public static byte MH = (byte)((M >> 8) & 0xff);
//public static byte ML = (byte)((M >> 0) & 0xff);

private void TakeSnap_Click(object sender, EventArgs e)
{
// First set the size of the image //
byte[] sendCmd = new byte[9] { 0x56, 0x00, 0x31, 0x05, 0x04, 0x01, 0x00, 0x19, 0x11 };

 try
 {
if (!(CamPort.IsOpen)) CamPort.Open(); // If the port is closed!,Open it again //
CamPort.Write(sendCmd, 0, 9);
Thread.Sleep(100);// Wait for the camera //
for (int i = 0; i < 5; i++)
{
ReceivedMsg[i] = (byte)(CamPort.ReadByte()); // Store the returned msg //
 }
if (ReceivedMsg[0].ToString("x") == "76" && ReceivedMsg[1].ToString("x") == "0" && ReceivedMsg[2].ToString("x") == "31" && ReceivedMsg[3].ToString("x") == "0" && ReceivedMsg[4].ToString("x") == "0")
        {
try
{
CamPort.DiscardOutBuffer();
CamPort.DiscardInBuffer();
byte[] TakePicCmd = new byte[] { 0x56, 0x00, 0x36, 0x01, 0x00 };
CamPort.Write(TakePicCmd, 0, 5);
Thread.Sleep(100);// Wait for the camera //
for (int i = 0; i < 5; i++)
{
ReceivedMsg[i] = (byte)(CamPort.ReadByte());
}
 if (ReceivedMsg[0].ToString("x") == "76" && ReceivedMsg[1].ToString("x") == "0" && ReceivedMsg[2].ToString("x") == "36" && ReceivedMsg[3].ToString("x") == "0" && ReceivedMsg[4].ToString("x") == "0")
                { 
 try
 {
CamPort.DiscardOutBuffer();
CamPort.DiscardInBuffer();
byte[] ReadSizeCommand = new byte[5] { 0x56, 0x00, 0x34, 0x01, 0x00 };
CamPort.Write(ReadSizeCommand, 0, 5);
Thread.Sleep(100);// Wait for the camera //
 for (int i = 0; i < 9; i++)
{
ReceivedMsg[i] = (byte)(CamPort.ReadByte());
}
if (ReceivedMsg[0].ToString("x") == "76" && ReceivedMsg[1].ToString("x") == "0" && ReceivedMsg[2].ToString("x") == "34" && ReceivedMsg[3].ToString("x") == "0" && ReceivedMsg[4].ToString("x") == "4" && ReceivedMsg[5].ToString("x") == "0" && ReceivedMsg[6].ToString("x") == "0")
                        {   
int ImageSize=(((ReceivedMsg[7] & 0x00ff) << 8) | (ReceivedMsg[8] & 0x00ff));
    
try
{
 CamPort.DiscardOutBuffer();
 CamPort.DiscardInBuffer();
  byte[] body = new byte[32];
byte[] header = new byte[5];
  bool EndFlag = false;    
 while (!EndFlag)
 {
 ReadJpegFileCommand();
 Thread.Sleep(25);// Wait for the camera //
for (int i = 0; i < 5; i++) header[i] = (byte)CamPort.ReadByte(); ////// If the first 5 bytes matching [76 00 32 00 00] then read the body and display the image //////
 if (((int)header[0] == 0x76) && (header[1] == 0x00) && (header[2] == 0x32) && (header[3] == 0x00) && (header[4] == 0x00))
{
for (int i = 0; i < 32; i++)
body[i] = (byte)CamPort.ReadByte();

for (int i = 1; i < body.Length; i++)// check if reached to the last two bytes(FF D9) of the body //
{
if ((body[i - 1] == 0xFF) && (body[i - 0] == 0xD9))
{
 EndFlag = true;
 MessageBox.Show("done");
 }
 }
 }
else
 {
MessageBox.Show("Unexpted Returned value "); // the first 5 bytes does not match the header 
}
 }
}

catch (System.Exception ex) { MessageBox.Show(ex.Message); }

 }
else { MessageBox.Show("Reset the camera and start again0 !!"); }
 }
 catch (System.Exception ex) { MessageBox.Show(ex.Message); }
 }
else { MessageBox.Show("Reset the camera and start again1 !!"); }
 }
 catch (System.Exception ex) { MessageBox.Show(ex.Message); }
 }
else { MessageBox.Show("Reset the camera and try again2 !!"); }
 }
catch (System.Exception ex) { MessageBox.Show(ex.Message); }
}

//--------------------------------------------------------------------------------

public void ReadJpegFileCommand()
{
try
{
MH = (byte)(factor / 0x100);
ML = (byte)(factor % 0x100);
byte[] ReadImageCommand = new byte[16] { 0x56, 0x00, 0x32, 0x0C, 0x00, 0x0A, 0x00, 0x00, MH, ML, 0x00, 0x00, 0x00, 0x20, 0x00, 0x0a };
CamPort.Write(ReadImageCommand, 0, 16);
factor += 0x20;
}

catch (System.Exception ex) { MessageBox.Show(ex.Message); }
}