The following sample code represents the handler that creates linear gradient brush.
Please note that the given code snippet shows the initial declarations of some objects using their full namespace. In subsequent use of those and related objects, the namespace is omitted for brevity.
To write code in Visual Basic
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Private Sub C1Chart1_DrawDataSeries(ByVal sender As Object, _ ByVal e As C1.Win.C1Chart.DrawDataSeriesEventArgs) _ Handles C1Chart1.DrawDataSeries Dim ds As C1.Win.C1Chart.ChartDataSeries = sender Dim clr1 As Color = ds.LineStyle.Color Dim clr2 As Color = ds.SymbolStyle.Color If(e.Bounds.Height > 0 And e.Bounds.Width > 0) Then Dim lgb As System.Drawing.Drawing2D.LinearGradientBrush = _ New LinearGradientBrush(e.Bounds, clr1, clr2, LinearGradientMode.Horizontal) e.Brush = lgb End If End Sub |
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To write code in C#
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private void c1Chart1_DrawDataSeries(object sender,
C1.Win.C1Chart.DrawDataSeriesEventArgs e)
{
C1.Win.C1Chart.ChartDataSeries ds = (ChartDataSeries)sender;
Color clr1 = ds.LineStyle.Color;
Color clr2 = ds.SymbolStyle.Color;
if(e.Bounds.Size.Height > 0 && e.Bounds.Size.Width > 0)
{
System.Drawing.Drawing2D.LinearGradientBrush lgb = new LinearGradientBrush(e.Bounds, clr1, clr2, LinearGradientMode.Horizontal);
e.Brush = lgb;
}
}
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The following image shows the linear gradient brush:
