MaskedTextBox

Uses a mask to distinguish between proper and improper user input.

The Wisej.NET MaskedTextBox enhances the TextBox control with declarative input validation. The Mask property enables specifying:

• Required input characters

• Optional input characters

• Input type expected at each mask position (digit, alphabetic, alphanumeric)

• Mask literals (characters appearing directly in the MaskedTextBox, like hyphens in phone numbers or currency symbols)

• Special character processing (e.g., converting to uppercase)

Features

Preset Masks

The custom mask property editor provides selection from predefined, commonly used masks.

MaskedTextBox mask property editor

Custom Error Handling

The InvalidMessage property sets a tooltip message for invalid entries.

MaskedTextBox showing invalid input message

The TypeValidationCompleted event handler enables custom validation behavior.

MaskedTextBox with custom validation handling

Text Mask Format

The TextMaskFormat property determines literal and prompt character processing in the formatted string, controlling their inclusion in the Text property. Excluded prompt characters convert to spaces.

• ExcludePromptAndLiterals: Shows only user input text

• IncludeLiterals: Shows user input and mask literal characters

• IncludePrompt: Shows user input and prompt characters

• IncludePromptAndLiterals: Shows user input, literal characters, and prompt characters

How To

Customize the Appearance

Customize text color using the ForeColor property.

Advanced

JavaScript Widget

Item	Description
Class name	"wisej.web.MaskedTextBox"
Theme Appearance	"textbox"
Child components	"textfield" is the inner <input> widget. See JavaScript
Toolcontainer state	"editor", see Embedded Tools
Source code	https://github.com/iceteagroup/wisej-js