I have implemented this validation. But you would be used code behind. It is too much easy and simplest way.
XAML: For name Validtion only enter character from A-Z and a-z.
<TextBox x:Name="first_name_texbox" PreviewTextInput="first_name_texbox_PreviewTextInput" > </TextBox>
Code Behind.
private void first_name_texbox_PreviewTextInput ( object sender, TextCompositionEventArgs e )
{
Regex regex = new Regex ( "[^a-zA-Z]+" );
if ( regex.IsMatch ( first_name_texbox.Text ) )
{
MessageBox.Show("Invalid Input !");
}
}
For Salary and ID validation, replace regex constructor passed value with [0-9]+. It means you can only enter number from 1 to infinite.
You can also define length with [0-9]{1,4}. It means you can only enter less then or equal to 4 digit number. This baracket means {at least,How many number}. By doing this you can define range of numbers in textbox.
May it help to others.
XAML:
Code Behind.
private void salary_texbox_PreviewTextInput ( object sender, TextCompositionEventArgs e )
{
Regex regex = new Regex ( "[^0-9]+" );
if ( regex.IsMatch ( salary_texbox.Text ) )
{
MessageBox.Show("Invalid Input !");
}
}