MaskedTextBox.PasswordChar Property

 

Gets or sets the character to be displayed in substitute for user input.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public char PasswordChar { get; set; }

Property Value

Type: System.Char

The Char value used as the password character.

Exception Condition
ArgumentException

The character specified when setting this property is not a valid password character, as determined by the IsValidPasswordChar method of the MaskedTextProvider class.

InvalidOperationException

The password character specified is the same as the current prompt character, PromptChar. The two are required to be different.

For sensitive user input, it is common practice to conceal the actual information entered by the user. If the PasswordChar property is set to a non-null character, MaskedTextBox will display this character for all input into the control. Setting this property to null will disable this functionality.

If you want to use the operating system supplied password character, which is defined in COMCTL32.dll, use the UseSystemPasswordChar property instead. If both the PasswordChar and UseSystemPasswordChar properties are activated, the latter takes precedence.

System_CAPS_importantImportant

As a security consideration, the MaskedTextBox control disables cut and copy operations on password-protected strings.

.NET Framework
Available since 2.0
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