MaskedTextBox.IsOverwriteMode Property

Note: This property is new in the .NET Framework version 2.0.

Gets a value that specifies whether new user input overwrites existing input.

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

public bool IsOverwriteMode { get; }
/** @property */
public boolean get_IsOverwriteMode ()

public function get IsOverwriteMode () : boolean

Property Value

true if MaskedTextBox will overwrite existing characters as the user enters new ones; false if MaskedTextBox will shift existing characters forward. The default is false.

IsOverwriteMode takes into account both the value of the InsertKeyMode property and the state of the user's keyboard. If InsertKeyMode is set to either On or Off, IsOverwriteMode will return false or true, respectively. If InsertKeyMode is set to InsertKeyMode, it will return the state of the INSERT key.

When IsOverwriteMode is false, MaskedTextBox will reject as invalid any character entry that would result in a violation anywhere in the mask. In explanation, if inserting a character would cause a character to be shifted over into a mask position where it would not be valid, the character insertion will be rejected.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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