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If you want calculate the coordinates of the Axes, is necessary axes have values,otherwise if you try to calculate X and Y coordinates of Chart Grid, always you get zero, as result. Therefor, to calculate the correct values of axes coordinates, you need use method SetMinMax() to assign range of values to the axes, as do in next lines of code:like i understand the Calc funtions - they are depending on an existing ValueList eg. Series? But i have no Series, i have an xy "Grid" witch are defined from the Min/Max and increment of the axis and i want to get the position coordinates of an MouseClick in Values of the xyGrid - without any Series / ValueLists....
or i it necessary to add an empty series before i can receive values?
Code: Select all
Public Sub New()
' This call is required by the Windows Form Designer.
InitializeComponent()
InitializeChart()
' Add any initialization after the InitializeComponent() call.
End Sub
Private Sub InitializeChart()
TChart1.Axes.Bottom.SetMinMax(0, 10)
AddHandler TChart1.MouseClick, AddressOf tChart1_MouseClick
End Sub
Private Sub tChart1_MouseClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs)
Dim x As Double = TChart1.Axes.Bottom.CalcPosPoint(e.X)
Me.Text = x.ToString()
End Sub