VB.NET Language in a Nutshell, Second Edition

Name

Chr, ChrW Functions

Class

Microsoft.VisualBasic.Strings

Syntax

Chr(charcode)
ChrW(charcode)

charcode (required; Integer)

An expression that evaluates to a Unicode character code

Return Value

A Char that contains the character represented by charcode

Description

Returns the character represented by the charcode

Programming Tips and Gotchas

• Use Chr(34) to embed quotation marks inside a string, as shown in the following example:

  sSQL = "SELECT * FROM myTable _
         where myColumn = " & Chr(34) & sValue & Chr(34)

• The following table lists some of the more commonly used character codes that are supplied in the call to the Chr function:

Code	Constant	Description
0	vbNullChar	For C/C++ string functions, the null character required to terminate standard strings
8	vbBack	A backspace character
9	vbTab	A tab character
10	vbLf	A linefeed character
13	vbCr	A carriage return character
34	ControlChars.Quote	A quotation mark

VB.NET/VB 6 Differences

• The ChrB function is no longer supported.

• The VB 6 version of the Chr function returns a String; the VB.NET version returns a Char.

See Also

Asc, AscW Functions