ExportToImage, border

[Richard Alvarez]

I'm exporting a chart to png using ExportToImage and the PngBitmapEncoder.  Is there any way of getting rid of the border around the resulting image?

[Missing User]

Hi Richard,

I made a local test in order to reproduce this issue, but I didn't get an unexpected border around the chart. If you mean the default RadChart border, you can remove it before exporting and restore it after that. For example:

private void ButtonExportChartToImage_Click(object sender, RoutedEventArgs e)
{
    //remove the default RadChart border before export
    radChart.BorderThickness = new Thickness(0);

    SaveFileDialog dialog = new SaveFileDialog();
    dialog.DefaultExt = "png";
    dialog.Filter = string.Format("{1} File (*.{0}) | *.{0}", "png", "PNG");

    if (!(bool)dialog.ShowDialog())
        return;

    Stream fileStream = dialog.OpenFile();
    radChart.ExportToImage(fileStream, new PngBitmapEncoder());

    fileStream.Close();

    //restore the default RadChart border after export
    radChart.BorderThickness = new Thickness(1);
}

I hope this helps.

Regards,

Polina

the Telerik team

[Richard Alvarez]

That did help.  I did some more experimenting, and found that the problem only occurred when I set the width of the chart, which is strange because that is the constraining proportion for the area I'm putting the image of the chart in.  So instead, I calculate the height I think I need, set that, and let width go unassigned.