ArrayList::CopyTo Method (Int32, Array, Int32, Int32)
Assembly: mscorlib (in mscorlib.dll)
Parameters
- index
- Type: System::Int32
The zero-based index in the source ArrayList at which copying begins.
- array
- Type: System::Array
The one-dimensional Array that is the destination of the elements copied from ArrayList. The Array must have zero-based indexing.
- arrayIndex
- Type: System::Int32
The zero-based index in array at which copying begins.
- count
- Type: System::Int32
The number of elements to copy.
| Exception | Condition |
|---|---|
| ArgumentNullException | array is nullptr. |
| ArgumentOutOfRangeException | index is less than zero. -or- arrayIndex is less than zero. -or- count is less than zero. |
| ArgumentException | array is multidimensional. -or- index is equal to or greater than the Count of the source ArrayList. -or- The number of elements from index to the end of the source ArrayList is greater than the available space from arrayIndex to the end of the destination array. |
| InvalidCastException | The type of the source ArrayList cannot be cast automatically to the type of the destination array. |
The specified array must be of a compatible type.
This method uses Array::Copy to copy the elements.
The elements are copied to the Array in the same order in which the enumerator iterates through the ArrayList.
This method is an O(n) operation, where n is count.
The following code example shows how to copy an ArrayList into a one-dimensional System::Array.
using namespace System; using namespace System::Collections; void PrintValues( array<String^>^myArr, char mySeparator ); int main() { // Creates and initializes the source ArrayList. ArrayList^ mySourceList = gcnew ArrayList; mySourceList->Add( "three" ); mySourceList->Add( "napping" ); mySourceList->Add( "cats" ); mySourceList->Add( "in" ); mySourceList->Add( "the" ); mySourceList->Add( "barn" ); // Creates and initializes the one-dimensional target Array. array<String^>^myTargetArray = gcnew array<String^>(15); myTargetArray[ 0 ] = "The"; myTargetArray[ 1 ] = "quick"; myTargetArray[ 2 ] = "brown"; myTargetArray[ 3 ] = "fox"; myTargetArray[ 4 ] = "jumped"; myTargetArray[ 5 ] = "over"; myTargetArray[ 6 ] = "the"; myTargetArray[ 7 ] = "lazy"; myTargetArray[ 8 ] = "dog"; // Displays the values of the target Array. Console::WriteLine( "The target Array contains the following (before and after copying):" ); PrintValues( myTargetArray, ' ' ); // Copies the second element from the source ArrayList to the target Array, starting at index 7. mySourceList->CopyTo( 1, myTargetArray, 7, 1 ); // Displays the values of the target Array. PrintValues( myTargetArray, ' ' ); // Copies the entire source ArrayList to the target Array, starting at index 6. mySourceList->CopyTo( myTargetArray, 6 ); // Displays the values of the target Array. PrintValues( myTargetArray, ' ' ); // Copies the entire source ArrayList to the target Array, starting at index 0. mySourceList->CopyTo( myTargetArray ); // Displays the values of the target Array. PrintValues( myTargetArray, ' ' ); } void PrintValues( array<String^>^myArr, char mySeparator ) { for ( int i = 0; i < myArr->Length; i++ ) Console::Write( "{0}{1}", mySeparator, myArr[ i ] ); Console::WriteLine(); } /* This code produces the following output. The target Array contains the following (before and after copying): The quick brown fox jumped over the lazy dog The quick brown fox jumped over the napping dog The quick brown fox jumped over three napping cats in the barn three napping cats in the barn three napping cats in the barn */
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.