Question

Can any one explain why the output of this code is only ‘hello’ and what this code means?

( 0, characterArray, 0, characterArray.Length ); 

The output is showing:

The character array is: hello

The code follows:

string string1 = 'hello there'; char[] characterArray = new char[ 5 ];  string1.CopyTo( 0, characterArray, 0, characterArray.Length ); Console.Write( '\nThe character array is: ' );  for ( int i = 0; i < characterArray.Length; i++ )     Console.Write( characterArray[ i ] ); 

Answer 1

It’s because your array is only set for 5 characters. Expand it to 11 and it will work.

Here is what the Copyto is:

public void CopyTo(     int sourceIndex,     char[] destination,     int destinationIndex,     int count ) 

 Parameters sourceIndex Type: System..::.Int32 A character position in this instance.   destination Type: array[]()[] An array of Unicode characters.   destinationIndex Type: System..::.Int32 An array element in destination.   count Type: System..::.Int32 The number of characters in this instance to copy to destination.  

Taken from: http://msdn.microsoft.com/en-us/library/system.string.copyto.aspx