Issue in binding Image Source with two different file format

Question

My application takes .tiff and .png images, when I upload .tiff image image.Source.Height and image.Source.Width is set to smaller values than actual dimensions of uploaded .tiff image. But when I upload .png image image.Source.Height and image.Source.Width is set to actual image values. Why is this happening?

Answer 1

ImageSource Width and Height are different from PixelWidth and PixelHeight. DPI change the Width and Height.

Note : If you want to resize a BitmapSource :

public static BitmapImage BitmapImageFromBitmapSourceResized(BitmapSource bitmapSource, int newWidth)
    {
        BmpBitmapEncoder encoder = new BmpBitmapEncoder();
        MemoryStream memoryStream = new MemoryStream();
        BitmapImage bImg = new BitmapImage();

        encoder.Frames.Add(BitmapFrame.Create(bitmapSource));
        encoder.Save(memoryStream);

        bImg.BeginInit();
        bImg.StreamSource = new MemoryStream(memoryStream.ToArray());
        bImg.DecodePixelWidth = newWidth;
        bImg.EndInit();
        memoryStream.Close();
        return bImg;
    }