saving WPF InkCanvas to a JPG - image is getting cropped

Answer 1

Aha! The problem is the TextBlock txtLabel that is directly above the InkCanvas. When you remove that the black line disappears.

As for why that is happening, I'm not entirely sure yet.

Answer 2

Jason i solvo this problem. Sorry my English. i am Russian. You need set property inkCanvas.Margin is 0,0,0,0 that surface.Margin = new Thickness(0, 0, 0, 0); after saving set margin in you posicion

exaple: i nave

surface.Margin = new Thickness(0, 0, 0, 0); http://img189.imageshack.us/img189/7499/mynewimage.png

Answer 3

and surface.Margin = new Thickness(55,40,96,5); http://img519.imageshack.us/img519/7499/mynewimage.png

Answer 4

My class save image

     using System;
     using System.IO;
     using System.Windows;
     using System.Windows.Controls;
     using System.Windows.Media;
     using System.Windows.Media.Imaging;

     public void ExportToJpeg(String path,  InkCanvas surface)
    {
        double
                x1 = surface.Margin.Left,
                x2 = surface.Margin.Top,
                x3 = surface.Margin.Right,
                x4 = surface.Margin.Bottom;

        if (path == null) return;

        surface.Margin = new Thickness(0, 0, 0, 0);

      Size size = new Size(surface.Width, surface.Height);
   surface.Measure(size);
   surface.Arrange(new Rect(size));

         RenderTargetBitmap renderBitmap =
          new RenderTargetBitmap(
            (int)size.Width,
            (int)size.Height,
            96,
            96,
            PixelFormats.Default);
      renderBitmap.Render(surface);
      using (FileStream fs = File.Open(path, FileMode.Create))
        {
         JpegBitmapEncoder encoder = new JpegBitmapEncoder();
            encoder.Frames.Add(BitmapFrame.Create(renderBitmap));
            encoder.Save(fs);
        }
      surface.Margin = new Thickness(x1, x2, x3, x4);
    }

Answer 5

Thanks! I have been thinking of this problem lately.

Now i can see a very thin border around the saved image but when i save the image as PNG, GIF or BMP i see no border at all. Why so?

Any help appreciated.