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String.Copy Method

Creates a new instance of String with the same value as a specified String.

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

public static string Copy (
	string str
)
public static String Copy (
	String str
)
public static function Copy (
	str : String
) : String

Parameters

str

The String to copy.

Return Value

A new String with the same value as str.

Exception typeCondition

ArgumentNullException

str is a null reference (Nothing in Visual Basic).

The following code example displays two disimilar strings referenced by two variables, creates a copy of the first string, assigns a reference to the new string to the second variable, then displays the two strings referenced by the variables to demonstrate that the strings are now identical.

// Sample for String.Copy()
using System;

class Sample {
    public static void Main() {
    string str1 = "abc";
    string str2 = "xyz";
    Console.WriteLine("1) str1 = '{0}'", str1);
    Console.WriteLine("2) str2 = '{0}'", str2);
    Console.WriteLine("Copy...");
    str2 = String.Copy(str1);
    Console.WriteLine("3) str1 = '{0}'", str1);
    Console.WriteLine("4) str2 = '{0}'", str2);
    }
}
/*
This example produces the following results:
1) str1 = 'abc'
2) str2 = 'xyz'
Copy...
3) str1 = 'abc'
4) str2 = 'abc'
*/

// Sample for String.Copy()
import System.*;

class Sample
{
    public static void main(String[] args)
    {
        String str1 = "abc";
        String str2 = "xyz";
        Console.WriteLine("1) str1 = '{0}'", str1);
        Console.WriteLine("2) str2 = '{0}'", str2);
        Console.WriteLine("Copy...");
        str2 = String.Copy(str1);
        Console.WriteLine("3) str1 = '{0}'", str1);
        Console.WriteLine("4) str2 = '{0}'", str2);
    } //main
} //Sample
/*
This example produces the following results:
1) str1 = 'abc'
2) str2 = 'xyz'
Copy...
3) str1 = 'abc'
4) str2 = 'abc'
*/

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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