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Datetime stamp on TIFF image

I want to open a TIFF file, put a datetime stamp on it and save that file in
CompressionCCITT4 format back to the same filename.
I have written following code to do this, but getting "Invalid parameter
used. at System.Drawing.Image.Save(String filename, ImageCodeInfo encoder,
EncoderParameters encoderParams)" error.
public void EditTIFFImage(string strImageFile)
EncoderParameters encParamsCompress = new EncoderParameters(1);
Encoder encCompress = new Encoder(Encoder.Compression.Guid);
encParamsCompress.Param[0] = new EncoderParameter(encCompress,
Image i = Image.FromFile(strImageFile);
Image t=new Bitmap(i.Width,i.Height);
Graphics g=Graphics.FromImage(t);
Font f = new Font("Verdana",30);
g.DrawString(DateTime.Now.ToShortDateString()+":"+ DateTime.Now.ToShortTimeString(),f,Brushes.Black,1 0,10,StringFormat.GenericTypographic);
t.Save(strImageFile.Replace(".", "temp."), GetEncoderInfo("image/tiff"),
private ImageCodecInfo GetEncoderInfo(string mimeType){
ImageCodecInfo[] encoders=ImageCodecInfo.GetImageEncoders();
for (int j=0;j<encoders.Length;j++){
if (encoders[j].MimeType==mimeType)
return encoders[j];

throw new Exception( mimeType + " mime type not found in ImageCodecInfo" );

Please help.

Best Regards,
Nov 17 '05 #1
0 2510

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