Override OnPreviewKeyDown for DateTimeEdit

[Allan]

Hi

I'm trying to override the OnPreviewKeyDown event attached the to DateTimeEdit control so i can handle alpha shortcut keys.

I've been trying to do this using a controltemplate with the following code defined in a class without much luck.

 public class DTPicker : DateTimeEdit

    {

        public DTPicker()

        {

            this.DefaultStyleKey = typeof(DTPicker);

        }

    protected override void OnPreviewKeyDown(KeyEventArgs e)

        {

            DateTime workingDt = (this.DateTime == null ? System.DateTime.Today : (DateTime)this.DateTime);

            if (e.Key == Key.Delete)

            {

                this.DateTime = null;

                e.Handled = true;

            }

            else if (e.Key == Key.T)

            {

                this.DateTime = System.DateTime.Today;

                e.Handled = true;

            }

            else if (e.Key == Key.OemPlus || e.Key == Key.Add)

                this.DateTime = workingDt.AddDays(1);

            else if (e.Key == Key.OemMinus || e.Key == Key.Subtract)

                this.DateTime = workingDt.AddDays(-1);

            }

            else

                base.OnPreviewKeyDown(e);

        }

}

and using a style defined in the global resource dictionary pointing to the class containing the above code

<Style TargetType="sf:DateTimeEdit">

        <Setter Property="VerticalAlignment" Value="Center"/>

        <Setter Property="HorizontalAlignment" Value="Left"/>

        <Setter Property="Template">

            <Setter.Value>

                <ControlTemplate TargetType="{x:Type ct:DTPicker}" />

            </Setter.Value>

        </Setter>

    </Style>

Unfortunately receiving a template error with this so hoping you could advise what I need to change to get this working.

Thanks

Allan

[Ninja]

Hi Allan, 

Thanks for contacting Syncfusion support. 

We have checked your query and it seems that you have created DTPicker to override the OnPreviewKeyDown event of DateTimeEdit and in styles you have tried to apply DTPicker as control template for controls of type DateTimeEdit in ResourceDictionary. It is not possible to apply the DTPicker as a control template. The only solution is to use DTPicker instead of DateTimeEdit as control, especially not in styles and it will allow you to meet your requirement. 

Sample : https://www.syncfusion.com/downloads/support/directtrac/general/ze/DateTimeEdit_Overidding_Check554032743  

Regards, 

Niranjan Kumar Gopalan 

 

[Allan]

Thanks Niranjan 

That works perfectly.

Cheers

Allan.

[Ninja]

Hi Allan, 

Thanks for your update. 

We are glad to know reported query has been resolved at your end. Have a safe day! 

Regards, 

Niranjan Kumar Gopalan