Trim, LTrim, and RTrim Functions

Trim, LTrim, and RTrim Functions

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

Visual Basic Language Reference

Trim, LTrim, and RTrim Functions

Returns a string that contains a copy of a specified string without leading spaces (LTrim), without trailing spaces (RTrim), or without leading or trailing spaces (Trim).

Public Shared Function LTrim(ByVal str As String) As String
Public Shared Function RTrim(ByVal str As String) As String
Public Shared Function Trim(ByVal str As String) As String

Parameters

str: Required. Any valid String expression. If str equals Nothing, the function returns an empty string.

Remarks

The LTrim, RTrim, and Trim functions remove spaces from the ends of strings. To remove other forms of white space, such as tab characters, use the String..::.Trim method.

Example

This example uses the LTrim function to remove leading spaces and the RTrim function to remove trailing spaces from a string variable. It uses the Trim function to remove both types of spaces.

Visual Basic

' Initializes string.
Dim TestString As String = "  <-Trim->  "
Dim TrimString As String
' Returns "<-Trim->  ".
TrimString = LTrim(TestString)
' Returns "  <-Trim->".
TrimString = RTrim(TestString)
' Returns "<-Trim->".
TrimString = LTrim(RTrim(TestString))
' Using the Trim function alone achieves the same result.
' Returns "<-Trim->".
TrimString = Trim(TestString)

Requirements

Namespace: Microsoft.VisualBasic

Module: Strings

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

Reference

String Manipulation Summary

Left Function (Visual Basic)

Right Function (Visual Basic)

Trim