Array::CreateInstance Method (Type, Int32, Int32, Int32)
Assembly: mscorlib (in mscorlib.dll)
public: static Array^ CreateInstance( Type^ elementType, int length1, int length2, int length3 )
Parameters
- elementType
- Type: System::Type
The Type of the Array to create.
- length1
- Type: System::Int32
The size of the first dimension of the Array to create.
- length2
- Type: System::Int32
The size of the second dimension of the Array to create.
- length3
- Type: System::Int32
The size of the third dimension of the Array to create.
Return Value
Type: System::ArrayA new three-dimensional Array of the specified Type with the specified length for each dimension, using zero-based indexing.
| Exception | Condition |
|---|---|
| ArgumentNullException | elementType is nullptr. |
| ArgumentException | elementType is not a valid Type. |
| NotSupportedException | elementType is not supported. For example, Void is not supported. -or- elementType is an open generic type. |
| ArgumentOutOfRangeException | length1 is less than zero. -or- length2 is less than zero. -or- length3 is less than zero. |
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
Reference-type elements are initialized to nullptr. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is the product of length1, length2, and length3.
The following code example shows how to create and initialize a three-dimensional Array.
using namespace System; void PrintValues( Array^ myArr ); void main() { // Creates and initializes a three-dimensional Array instance of type Object. Array^ my3DArray = Array::CreateInstance( Object::typeid, 2, 3, 4 ); for ( int i = my3DArray->GetLowerBound( 0 ); i <= my3DArray->GetUpperBound( 0 ); i++ ) for ( int j = my3DArray->GetLowerBound( 1 ); j <= my3DArray->GetUpperBound( 1 ); j++ ) for ( int k = my3DArray->GetLowerBound( 2 ); k <= my3DArray->GetUpperBound( 2 ); k++ ) my3DArray->SetValue( String::Concat( "abc", i, j, k ), i, j, k ); // Displays the values of the Array. Console::WriteLine( "The three-dimensional Array instance contains the following values:" ); PrintValues( my3DArray ); } void PrintValues( Array^ myArr ) { System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator(); int i = 0; int cols = myArr->GetLength( myArr->Rank - 1 ); while ( myEnumerator->MoveNext() ) { if ( i < cols ) { i++; } else { Console::WriteLine(); i = 1; } Console::Write( "\t{0}", myEnumerator->Current ); } Console::WriteLine(); } /* This code produces the following output. The three-dimensional Array instance contains the following values: abc000 abc001 abc002 abc003 abc010 abc011 abc012 abc013 abc020 abc021 abc022 abc023 abc100 abc101 abc102 abc103 abc110 abc111 abc112 abc113 abc120 abc121 abc122 abc123 */
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.