[Solved] NumericUpDown Event Example

[Jon]

Hello,

I have an App that uses the NumericUpDown to update a TextBlock. I'm having trouble writing the ValueChanging Event Handler. Does anyone have an example of a Value Changing Event Handler I can use?

Thanks,
JT

[Deyan]

Hello Jon,

Thanks for writing.

Subscribing for the ValueChanging event handler is as simple as the following:

    this.radNumericUpDown.ValueChanging += this.radNumericUpDown_ValueChanging;


void radNumericUpDown_ValueChanging(object sender, Windows.Controls.ValueChangingEventArgs<double> e)
{

}

The radNumericUpDown_ValueChanging method is the so-called event handler that will be called in case the ValueChanging event occurs. It is up to you and to the specifics of your app what code you will execute in this method.

I hope this helps.

Kind regards,
Deyan
the Telerik team

[Vijay]

Hello Jon,

Please find the below source code. Hope this should be useful.

private void radNum_ValueChanging(object sender, Windows.Controls.ValueChangingEventArgs<double> e)
{
  if (numericUpDown1.Value + numericUpDown2.Value + numericUpDown3.Value > 3)
        {
            e.Cancel = true;
            RadWindow.Alert("No more than 3 in total");
        }

}

Thanks and Regards,
Vijay
MVC Corp.