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String.Substring Method (Int32)

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public string Substring(
	int startIndex
)

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.

using System;

public class SubStringTest {
    public static void Main() {

        string [] info = {"Name: Felica Walker", "Title: Mz.", "Age: 47", "Location: Paris", "Gender: F"};
        int found = 0;

        Console.WriteLine("The initial values in the array are:");
        foreach (string s in info)
            Console.WriteLine(s);

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

        foreach (string s in info) {
            found = s.IndexOf(":");
            Console.WriteLine(s.Substring(found + 1));
        }
    }
}
// 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: 4.6, 4.5, 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

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, 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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