In applications that show multiple charts, you can sync the ticks on the x-axis of each chart.
Use the Margins property to align the axis positions of several chart areas. For example, the following method arranges the x-axis positions for two charts. Note that it can also be modified for syncing three charts.
To write code in Visual Basic
| Visual Basic |
Copy Code
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Private Sub AdjustAxisPositions()
C1Chart1.ChartArea.Margins.Left = 10
C1Chart1.ChartArea.Margins.Right = 10
C1Chart2.ChartArea.Margins.Left = 10
C1Chart2.ChartArea.Margins.Right = 10
' force redrawing
Dim img As Image = C1Chart1.GetImage()
If img IsNot Nothing Then
img.Dispose()
End If
img = C1Chart2.GetImage()
If img IsNot Nothing Then
img.Dispose()
End If
Dim ch1_X As Rectangle = C1Chart1.ChartArea.AxisX.GetAxisRect()
Dim ch2_X As Rectangle = C1Chart2.ChartArea.AxisX.GetAxisRect()
Dim d As Integer = ch1_X.Left - ch2_X.Left
If d > 0 Then
C1Chart2.ChartArea.Margins.Left += d
ElseIf d < 0 Then
c1Chart1.ChartArea.Margins.Left -= d
End If
d = ch1_X.Right - ch2_X.Right
If d > 0 Then
C1Chart1.ChartArea.Margins.Right += d
ElseIf d < 0 Then
C1Chart2.ChartArea.Margins.Right -= d
End If
End Sub
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To write code in C#
| C# |
Copy Code
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void AdjustAxisPositions()
{
c1Chart1.ChartArea.Margins.Left = 10;
c1Chart1.ChartArea.Margins.Right = 10;
c1Chart2.ChartArea.Margins.Left = 10;
c1Chart2.ChartArea.Margins.Right = 10;
// force redrawing
Image img = c1Chart1.GetImage();
if( img!=null)
img.Dispose();
img = c1Chart2.GetImage();
if( img!=null)
img.Dispose();
Rectangle ch1_X = c1Chart1.ChartArea.AxisX.GetAxisRect();
Rectangle ch2_X = c1Chart2.ChartArea.AxisX.GetAxisRect();
int d = ch1_X.Left - ch2_X.Left;
if( d>0)
c1Chart2.ChartArea.Margins.Left += d;
else if( d<0)
c1Chart1.ChartArea.Margins.Left -= d;
d = ch1_X.Right - ch2_X.Right;
if( d>0)
c1Chart1.ChartArea.Margins.Right += d;
else if( d<0)
c1Chart2.ChartArea.Margins.Right -= d;
}
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