Hi Archis Gore,
Unfortunately, using the AutoLayout property set to true does no allow you to specify the legend's dimensions. We would recommend you to use Autolayout = false and set the legend size by hand. here is a sample code:
RadChart1.AutoLayout = false;
RadChart1.Legend.Appearance.Dimensions.AutoSize = false;
RadChart1.Legend.Appearance.Dimensions.Height = 100;
RadChart1.Legend.Appearance.Dimensions.Width = 75;
Hope this will help.
the Telerik team
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