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Getting ImageFormat from bitmap RRS feed

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    User-1825738080 posted

     I'm trying to determine which extension I should use when saving an image to disk from the Bitmap object.

     

            private string GetExtension(Bitmap image)
            {
                if (image.RawFormat == ImageFormat.Bmp)
                    return ".bmp";
                if (image.RawFormat == ImageFormat.Gif)
                    return ".gif";
                if (image.RawFormat == ImageFormat.Png)
                    return ".png";
                if (image.RawFormat == ImageFormat.Jpeg)
                    return ".jpg";
                throw new FlexiException("Unsupported file format {0}", image.RawFormat.ToString());
            }

      In the debugger, it says the ImageFormat is Guid value

     How do I determine the Bitmap's format to save the file correctly?

    Monday, January 19, 2009 1:21 PM

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    User2130758966 posted

     See this snippet:

     

       public string Format
   {
     get 
     {
      ImageFormat bmpFormat = m_bmpRepresentation.RawFormat;
      string strFormat = "unidentified format";
      
	  if (bmpFormat.Equals(ImageFormat.Bmp)) strFormat = "BMP";
	  else if (bmpFormat.Equals(ImageFormat.Emf)) strFormat = "EMF";
	  else if (bmpFormat.Equals(ImageFormat.Exif)) strFormat = "EXIF";
	  else if (bmpFormat.Equals(ImageFormat.Gif)) strFormat = "GIF";
	  else if (bmpFormat.Equals(ImageFormat.Icon)) strFormat = "Icon";
	  else if (bmpFormat.Equals(ImageFormat.Jpeg)) strFormat = "JPEG";
	  else if (bmpFormat.Equals(ImageFormat.MemoryBmp)) strFormat = "MemoryBMP";
	  else if (bmpFormat.Equals(ImageFormat.Png)) strFormat = "PNG";
	  else if (bmpFormat.Equals(ImageFormat.Tiff)) strFormat = "TIFF";
	  else if (bmpFormat.Equals(ImageFormat.Wmf)) strFormat = "WMF";
      
      return strFormat;
     }
   }

      

    And this explanation:

     ....as the image format is defined as GUID and I therefore have to perform all comparisons with Equals....

    From this page:

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Monday, January 19, 2009 1:44 PM