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MaskedTextBox.AsciiOnly Property

Gets or sets a value indicating whether the MaskedTextBox control accepts characters outside of the ASCII character set.

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

public bool AsciiOnly { get; set; }

Property Value

Type: System.Boolean
true if only ASCII is accepted; false if the MaskedTextBox control can accept any arbitrary Unicode character. The default is false.

If true, AsciiOnly restricts user input to the characters a-z and A-Z. ASCII control characters are not allowed.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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