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Using objEncoderParams when saving an image

I'm currently saving a JPG file as such:

imgOutput.Save("path/filename.jpg", System.Drawing.Imaging.ImageFormat.Jpeg)

That saves the imgOutput as a JPG to the path shown.

Works fine.

Now, I'd like to change the JPG compression it uses. I apparently can do
that with an EncoderParameter:

Dim objEncoderParams As New EncoderParameters(1)
objEncoderParams.Param(0) = New EncoderParameter(Encoder.Quality, 500)
imgOutput.Save("path/filename.jpg", *encoder*, objEncoderParams)

What I'm stuck on is the 'encoder' value. What do I put there to? I assume I
need to tell it to use the JPG encoder, right? If so, I'm stuck on the
syntax.

-Darrel
Feb 23 '06 #1
2 1002
Check this out
http://weblogs.asp.net/despos/archiv.../12/57752.aspx

George

"darrel" <no*****@nowhere.com> wrote in message
news:O3**************@TK2MSFTNGP15.phx.gbl...
I'm currently saving a JPG file as such:

imgOutput.Save("path/filename.jpg",
System.Drawing.Imaging.ImageFormat.Jpeg)

That saves the imgOutput as a JPG to the path shown.

Works fine.

Now, I'd like to change the JPG compression it uses. I apparently can do
that with an EncoderParameter:

Dim objEncoderParams As New EncoderParameters(1)
objEncoderParams.Param(0) = New EncoderParameter(Encoder.Quality, 500)
imgOutput.Save("path/filename.jpg", *encoder*, objEncoderParams)

What I'm stuck on is the 'encoder' value. What do I put there to? I assume
I need to tell it to use the JPG encoder, right? If so, I'm stuck on the
syntax.

-Darrel

Feb 23 '06 #2
Check this out
http://weblogs.asp.net/despos/archiv.../12/57752.aspx


Well, that leaves me with the same question, I think. The key line being:

bmp.Save(fileName, jpegCodecInfo, codecParams);

I'm stumped as to what the 'jpegCodecInfo' is. How do I set that?

-Darrel
Feb 24 '06 #3

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