How to restrict the default validation in WinUI MaskedTextBox

21 Jun 20231 minute to read

The MaskedTextBox control provides the ability to validate the input according to the completion of masked input. By default, validation is enabled in the MaskedTextBox control. However, you can disable the validation by assigning true to the IsValid property of the ValueChanging event.

XAML

<syncfusion:SfMaskedTextBox x:Name="maskedTextBox"
                            Width="200"
                            MaskType="Simple"
                            Mask="000-000-0000"
                            ValueChanging="maskedTextBox_ValueChanging">
</syncfusion:SfMaskedTextBox>

C#

private void maskedTextBox_ValueChanging(object sender, MaskedTextBoxValueChangingEventArgs e)
{
    e.IsValid = true;
}