ComponentOne Chart for WPF and Silverlight
Chart for WPF and Silverlight / Chart Features / Time-Series Charts / Showing Data Labels on the First of Each Month
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    Showing Data Labels on the First of Each Month
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    To only show the data labels on the first of each month, use the following code:

    Visual Basic
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    c1Chart1.View.AxisX.IsTime = True
    c1Chart1.View.AxisX.AnnoFormat = "MMM-dd"
    ‘ when MajorUnit=31 for time axis chart should
    ‘ take into account variable number of day in month
    ‘ and mark the first day of each month
    c1Chart1.View.AxisX.MajorUnit = 31
    

     

    C#
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    c1Chart1.View.AxisX.IsTime = true;
    c1Chart1.View.AxisX.AnnoFormat = "MMM-dd";
    // when MajorUnit=31 for time axis chart should
    // take into account variable number of day in month
    // and mark the first day of each month
    c1Chart1.View.AxisX.MajorUnit = 31;
    

     

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