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How to increment or decrement the date in WinForms DateTimePicker (DateTimePickerAdv) using up or down arrow keys?

Platform: WinForms |
Control: DateTimePickerAdv |
Published Date: April 30, 2011 |
Last Revised Date: November 15, 2019

It is possible to add custom LegendItem to the Legend instead of the automated Legend items. For this we have to use the event Legend.FilterItems of the chartControl. This event is raised before the legend items are rendered.

Here is the code snippet.

C#

private void Legend_FilterItems(object sender, ChartLegendFilterItemsEventArgs e)
{
    e.Items.Clear();
    ChartLegendItemsCollection item = new ChartLegendItemsCollection();
    LegendItem l = new LegendItem();
    LegendItem l1 = new LegendItem();
    l.ItemStyle.BorderColor=Color.Black;
    l.Text="Test1";
    l1.ItemStyle.BorderColor = Color.Blue;
    l1.Text = "Test2";
    item.Add(l);
    item.Add(l1);
    e.Items = item;
}

Please refer the sample that illustrates this: ChartLegend

Increment or decrement the date

Using up/down arrow keys we can increment/decrement the date. This can be acheived by overriding ProcessCmdKey() method of DateTimePickerAdv.

C#

protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg,
System.Windows.Forms.Keys keyData)
{
    if (keyData == System.Windows.Forms.Keys.Up)
    {
         this.Value = this.Value.AddDays(1);
         return true;
    }
   else if (keyData == System.Windows.Forms.Keys.Down)
   {
         this.Value = this.Value.AddDays(-1);
         return true;
   }
   else
   {
         return base.ProcessCmdKey(ref msg, keyData);
   }
}

 

VB

Protected Overrides Function ProcessCmdKey(ByRef msg As
System.Windows.Forms.Message, ByVal keyData As System.Windows.Forms.Keys) As
Boolean
    If keyData = System.Windows.Forms.Keys.Up Then
       Me.Value = Me.Value.AddDays(1)
       Return True
    ElseIf keyData = System.Windows.Forms.Keys.Down Then
       Me.Value = Me.Value.AddDays(-1)
       Return True
    Else
       Return MyBase.ProcessCmdKey(msg, keyData)
    End If
End Function

Sample:

http://help.syncfusion.com/support/samples/kb/tools.windows/kb_datetimepickeradv1/Tools_WF_KB_DateTimePickerAdv.zip

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