Hello,

I have been investigation into your issue and you are giving the RenderTargetBitmap constructor an instance of the XamDataChart object. However the Legend is a separate object and the Legend property of the xamDataChart is just bound to that object. When you are giving the xamDataChart instance to the RenderTargetBitmap, it simply cannot figure out that you want to copy the additional  Legend object as well.

What you can do is but both the xamDataChart and the Legend in some sort of container or some other suitable structure, so you can pass it to the RenderTargetBitmap constructor.

In the following sample code I am placing the two objects in a grid and passing the hole grid to the RenderTargetBitmap constructor:

<Grid Name="grid1" Background="White">

            <ig:XamDataChart x:Name="xmDataChart"

                     Legend="{Binding ElementName=xmLegend}"

                     Height="269" Width="463">

….

</ig:XamDataChart>

            <ig:Legend x:Name="xmLegend" Content="Common Legend" Height="69" Width="119"></ig:Legend>

        </Grid>

And in the code-behind copy logic:

RenderTargetBitmap bmp = new RenderTargetBitmap((int)grid1.ActualWidth, (int)grid1.ActualHeight, 96, 96, PixelFormats.Default);

bmp.Render(grid1);

Clipboard.Clear();

Clipboard.SetImage(bmp);

Notice that I have explicitly set the Background property of the grid. I am doing this, because if I do not set it, it will get the default Transparent value and this can lead to unpredictable results then pasting, because this transparent color will be interpreted variously in the different programs. For example if I paste it in MS Paint the background will immediately become black.

If you have any other concerns on that matter, please do not hesitate to ask us.

Hello ,

I have a close problem. I try to export my datachart as an image with the code below;

RenderTargetBitmap bmp = new RenderTargetBitmap((int)xamDataChart1.ActualWidth, (int)xamDataChart1.ActualHeight, 96, 96, PixelFormats.Default);

 bmp.Render(xamDataChart);

  PngBitmapEncoder png = new PngBitmapEncoder();

 png.Frames.Add(BitmapFrame.Create(bmp));

But the bottom part of the datachart does not fit to image.

 (int)xamDataChart1.ActualWidth = 1120

 (int)xamDataChart1.ActualHeight = 426

So what I am missing?

Thanks