How do I get a DatePicker to only accept numeric input in WPF?

Question

I have the following DatePicker control:

<Grid x:Name="LayoutRoot" Background="White">
       <DatePicker Margin="2" Grid.Column="1" VerticalAlignment="Center"/>
</Grid>

Is it possible to allow user only to set numeric input? Or how to disable the Textbox input in case it's not possible to acheive

Answer 1

Try this one:

 <DatePicker Margin="2" Grid.Column="1" VerticalAlignment="Center">
            <DatePicker.Resources>
                <Style TargetType="DatePickerTextBox">
                    <Setter Property="IsReadOnly" Value="True"/>
                </Style>
            </DatePicker.Resources>
        </DatePicker>
</Grid>

Answer 2

This code only allows to enter numeric values in DatePicker

XAML:

<DatePicker Margin="2" Grid.Column="1"
            PreviewTextInput="phoneNumber_PreviewTextInput" 
            VerticalAlignment="Center"/>

Code behind

private void phoneNumber_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
    char character = Convert.ToChar(e.Text);
    if (char.IsNumber(character))
    {
        e.Handled = false;
    }
    else
    {
        e.Handled = true;
    }
}

Answer 3

Actually I appreciate your answers and I really enjoy them but I would like the solution I found, in fact I used the Regex and below is the used code :

private bool IsTextAllowed(string text)
{
     Regex regex = new Regex("[^0-9/]+"); 
     return !regex.IsMatch(text);
}

private void DatePicker_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
     e.Handled = !IsTextAllowed(e.Text);
}