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Find image format using Bitmap object in C#

Samuel Fernandes 2836 30-Jan-2014

I am loading the binary bytes of the image file hard drive and loading it into a Bitmap object. How do i find the image type[JPEG, PNG, BMP etc] from the Bitmap object?

Looks trivial. But, couldn't figure it out!

Sample code to achieve this.

using (MemoryStream imageMemStream = new MemoryStream(fileData))
{
    using (Bitmap bitmap = new Bitmap(imageMemStream))
    {
        ImageFormat imageFormat = bitmap.RawFormat;
        if (bitmap.RawFormat.Equals(System.Drawing.Imaging.ImageFormat.Jpeg))
            //It's a JPEG;
        else if (bitmap.RawFormat.Equals(System.Drawing.Imaging.ImageFormat.Png))
            //It's a PNG;
    }
}
c# c# 
Updated on 30-Jan-2014
Samuel Fernandes

Samuel Fernandes

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1 Answers

Pravesh Singh

Pravesh Singh

30-Jan-2014
Hi Samuel,

If you want to know the format of an image, you can load the file with the Image class, and check its RawFormat property:

using(Image img =Image.FromFile(@"C:\path\to\img.jpg"))
{
    if(img.RawFormat.Equals(System.Drawing.Imaging.ImageFormat.Jpeg))
    {
      // ...
    }
}

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