ArrayList::CopyTo Method (Array)
Assembly: mscorlib (in mscorlib.dll)
| Exception | Condition |
|---|---|
| ArgumentNullException | array is nullptr. |
| ArgumentException | array is multidimensional. -or- The number of elements in the source ArrayList is greater than the number of elements that the destination array can contain. |
| 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 ArrayList 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 ArrayList 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 ArrayList 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 SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.