In this source code example, we will demonstrate the usage of String.CopyTo() method in C# with an example.

The C# String.CopyTo() method is used to copy a specified number of characters from the specified position in the string. It copies the characters of this string into a char array.

C# String CopyTo Method Example

The following example demonstrates the CopyTo method.

using System;

public class StringDemo
{
    public static void Main(string[] args)
    {
       // Embed an array of characters in a string
        string strSource = "changed";
        char [] destination = { 'T', 'h', 'e', ' ', 'i', 'n', 'i', 't', 'i', 'a', 'l', ' ',
                'a', 'r', 'r', 'a', 'y' };

        // Print the char array
        Console.WriteLine( destination );

        // Embed the source string in the destination string
        strSource.CopyTo ( 0, destination, 4, strSource.Length );

        // Print the resulting array
        Console.WriteLine( destination );

        strSource = "A different string";

        // Embed only a section of the source string in the destination
        strSource.CopyTo ( 2, destination, 3, 9 );

        // Print the resulting array
        Console.WriteLine( destination ); 

    }

}

Output:

The initial array
The changed array
Thedifferentarray

Related C# String Examples

1. C# String Clone Method Example
2. C# String Compare Method Example
3. C# String CompareTo Method Example
4. C# String Concat Method Example
5. C# String Contains Method Example
6. C# String Copy Method Example
7. C# String CopyTo Method Example
8. C# String EndsWith Method Example
9. C# String Equals Method Example
10. C# String GetEnumerator Method Example
11. C# String GetHashCode Method Example
12. C# String IndexOf Method Example
13. C# String Insert Method Example
14. C# String Intern Method Example
15. C# String IsNullOrEmpty Method Example
16. C# String IsNullOrWhiteSpace Method Example
17. C# String LastIndexOf Method Example

References

https://docs.microsoft.com/en-us/dotnet/api/system.string.copyto?view=net-6.0