MaskedTextBox.UseSystemPasswordChar Property

Gets or sets a value indicating whether the operating system-supplied password character should be used.

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

public bool UseSystemPasswordChar { get; set; }
/** @property */
public boolean get_UseSystemPasswordChar ()

/** @property */
public void set_UseSystemPasswordChar (boolean value)

public function get UseSystemPasswordChar () : boolean

public function set UseSystemPasswordChar (value : boolean)

Not applicable.

Property Value

true if the system password should be used as the prompt character; otherwise, false. The default is false.

Exception typeCondition


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

The UseSystemPasswordChar property determines whether user-supplied input should be displayed in the MaskedTextBox as multiple occurrences of a password character defined by the operating system. UseSystemPasswordChar functions similarly to the PasswordChar property, but instead of using a programmer-supplied character for the prompt, UseSystemPasswordChar uses a prompt defined by the operating system. This property has precedence over PasswordChar.


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

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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