Input masks can contain literal and editable characters. If an attempt is made to add an input character to the position in a mask occupied by a literal, the value of the System.Windows.Forms.MaskedTextBox.SkipLiterals property determines the result.

• If this property is true, it is valid to overwrite a literal with the same value when adding input characters. For example, a forward slash character value, '/', could be added to the third position of the mask "00/00/000".

• If this property is false, it is not valid to assign any value to a mask position occupied by a literal character.