Export (0) Print
Expand All
2 out of 2 rated this helpful - Rate this topic

String.Substring Method (Int32)

Retrieves a substring from this instance. The substring starts at a specified character position.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
'Declaration
Public Function Substring ( _
	startIndex As Integer _
) As String

Parameters

startIndex
Type: System.Int32
The zero-based starting character position of a substring in this instance.

Return Value

Type: System.String
A string that is equivalent to the substring that begins at startIndex in this instance, or Empty if startIndex is equal to the length of this instance.
ExceptionCondition
ArgumentOutOfRangeException

startIndex is less than zero or greater than the length of this instance.

The index is zero-based.

NoteNote

   This method does not modify the value of the current instance. Instead, it returns a new string that begins at the startIndex position in the current string.

The following example demonstrates obtaining a substring from a string.


Public Class SubStringTest

    Public Shared Sub Main()
        Dim info As String() = {"Name: Felica Walker", "Title: Mz.", "Age: 47", "Location: Paris", "Gender: F"}
        Dim found As Integer = 0

        Console.WriteLine("The initial values in the array are:")
        Dim s As String
        For Each s In  info
            Console.WriteLine(s)

        Next s
        Console.WriteLine("{0}We want to retrieve only the key information. That is:", Environment.NewLine)

        For Each s In  info
            found = s.IndexOf(":")
            Console.WriteLine(s.Substring((found + 1)))
        Next s
    End Sub 'Main
End Class 'SubStringTest
' The example displays the following output to the console:
'       The initial values in the array are:
'       Name: Felica Walker
'       Title: Mz.
'       Age: 47
'       Location: Paris
'       Gender: F
'       
'       We want to retrieve only the key information. That is:
'       Felica Walker
'       Mz.
'       47
'       Paris
'       F


.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.