Gets or sets the character used to represent the absence of user input for all available edit positions.
The character used to prompt the user for input. The default is an underscore (_).
The PromptChar property represents the prompt character that is used by the ToDisplayString and ToString methods to represent the current state of the formatted input string. A prompt character is placed in editable positions that have not yet been assigned an input value.
MaskedTextProvider Class | Resco.Controls.MaskedTextBox Namespace