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Strings.ChrW Method

Returns the character associated with the specified character code.

Namespace:  Microsoft.VisualBasic
Assembly:  Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

static member ChrW : 
        CharCode:int -> char

Parameters

CharCode
Type: System.Int32

Required. An Integer expression representing the code point, or character code, for the character.

Return Value

Type: System.Char
Returns the character associated with the specified character code.

ExceptionCondition
ArgumentException

CharCode < -32768 or > 65535 for ChrW.

The asymmetric range accepted for CharCode compensates for the storage differences between the Short and the Integer. For example, -29183 is a Short but +36353 is an Integer. This also facilitates compatibility with Visual Basic 6.0.

Chr uses the Encoding class in the System.Text namespace to determine if the current thread is using a single-byte character set (SBCS) or a double-byte character set (DBCS). It then takes CharCode as a code point in the appropriate set. The range can be 0 through 255 for SBCS characters and -32768 through 65535 for DBCS characters.

The returned value depends on the code page for the current thread, which is contained in the ANSICodePage property of the TextInfo class in the System.Globalization namespace. You can obtain ANSICodePage by specifying System.Globalization.CultureInfo.CurrentCulture.TextInfo.ANSICodePage.

ChrW takes CharCode as a Unicode code point. The range is independent of the culture and code page settings for the current thread. Values from -32768 through -1 are treated the same as values in the range +32768 through +65535.

Numbers from 0 through 31 are the same as standard nonprintable ASCII codes. For example, Chr(10) returns a line feed character.

NoteNote

The ChrB function in earlier versions of Visual Basic returns a single byte. It is used primarily for converting strings in double-byte character set (DBCS) applications. All strings in Visual Basic and the .NET Framework are in Unicode, and ChrB is no longer supported.

The following example uses the Chr function to return the character associated with the specified character code.

Dim associatedChar As Char 
' Returns "A".
associatedChar = Chr(65)
' Returns "a".
associatedChar = Chr(97)
' Returns ">".
associatedChar = Chr(62)
' Returns "%".
associatedChar = Chr(37)

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1

Windows Phone 8.1, 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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