C# - "Parameter Is Not Valid" Exception From System.Drawing.Image.FromStream() Method?

Aug 27, 2010

I got a hard time with the Image.FromStream method in my website. The code below works perfect on my computer. But when I uploaded it to the test server, it always gives me "Parameter not valid" exception.

if (!afuImageFile.IsUploading && afuImageFile.HasFile)
System.Drawing.Image imgFile = System.Drawing.Image.FromStream(afuImageFile.FileContent);

the afuImageFile is an AsynFileUploader control in Ajax Tool Kits. afuImageFile.FileContent is a HttpInputStream.

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