Set the maximum chr length of a TextBlock in XAML

Question

How would I set the number of characters a user is allowed to input in a TextBlock in xaml?

Would I do it on the Model or create some sort of custom attribute to handle it?

Answer 1

TextBlock doesn't have a MaxLength, neither does Label. TextBox does. Users cannot input into a TextBlock unless you have modified it.

Is it really a TextBlock you want to limit or did you mean a TextBox? If it is a TextBox you can simply use the MaxLength property.

<TextBox Name="textBox1" MaxLength="5" />

If it really is a TextBlock you are using and somehow allowing a user to input data into it, then switch to use a TextBox. If it is the TextBlock style you are after, you can style the TextBox to look like a TextBlock.