Clearing RadDatePicker in a Custom FilteringControl

[Jeff R]

Hi,

I used something very similar to Telerik's 'Custom Filter Controls' demo: http://demos.telerik.com/silverlight/#GridView/CustomFilterControls

The control works great - however, clicking the "Clear" button does not clear the values in the raddatepicker fields (in the filter gui).  Typically, a Clear button should clear the field values, so that is what I need to implement.  The demo cited simply sets the fields to arbitrary dates within the OnClear method, but that is not an option for me.

I tried using the ClearValue:  this.fromDatePicker.ClearValue(DatePicker.SelectedDateProperty)
but that does not clear the fields.

Is there a method that I am missing?  What is the easiest, most straight forward way to accomplish this?

Thanks in advance - Jeff

[Maya]

Hello Jeff R,

You may set the two properties FromDate and ToDate to be nullable and clear their values instead of setting the default one as it is in the example. So, what you may try is:

public DateTime? FromDate

        {

            get { return this.fromDatePicker.SelectedDate.GetValueOrDefault(DateTime.MinValue); }

            set { this.fromDatePicker.SelectedDate = value; }

        }

 
public DateTime? ToDate

        {

            get { return this.toDatePicker.SelectedDate.GetValueOrDefault(DateTime.MaxValue); }

            set { this.toDatePicker.SelectedDate = value; }

        }

 

private void OnClear(object sender, RoutedEventArgs e)

        {

            if (this.column.DataControl.FilterDescriptors.Contains(this.compositeFilter))

            {

                this.column.DataControl.FilterDescriptors.Remove(this.compositeFilter);

            }

 

            this.FromDate = null;

            this.ToDate = null;

 

            this.IsActive = false;

        }

  

Regards,
Maya
the Telerik team