Array::SetValue Method (Object, Int32, Int32)

Sets a value to the element at the specified position in the two-dimensional Array. The indexes are specified as 32-bit integers.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

void SetValue(
	Object^ value, 
	int index1, 
	int index2


Type: System::Object

The new value for the specified element.

Type: System::Int32

A 32-bit integer that represents the first-dimension index of the Array element to set.

Type: System::Int32

A 32-bit integer that represents the second-dimension index of the Array element to set.


The current Array does not have exactly two dimensions.


value cannot be cast to the element type of the current Array.


Either index1 or index2 is outside the range of valid indexes for the corresponding dimension of the current Array.

The GetLowerBound and GetUpperBound methods can determine whether any of the indexes is out of bounds.

For more information about conversions, see Convert.

This method is an O(1) operation.


If SetValue is used to assign nullptr to an element of an array of value types, all fields of the element are initialized to zero. The value of the element is not a null reference, and cannot be found by searching for a null reference.

The following code example demonstrates how to set and get a specific value in a one-dimensional or multidimensional array.

using namespace System;
int main()

   // Creates and initializes a one-dimensional array. 
   array<String^>^myArr1 = gcnew array<String^>(5);

   // Sets the element at index 3.
   myArr1->SetValue( "three", 3 );
   Console::WriteLine( "[3]:   {0}", myArr1->GetValue( 3 ) );

   // Creates and initializes a two-dimensional array. 
   array<String^, 2>^myArr2 = gcnew array<String^,2>(5,5);

   // Sets the element at index 1,3.
   myArr2->SetValue( "one-three", 1, 3 );
   Console::WriteLine( "[1,3]:   {0}", myArr2->GetValue( 1, 3 ) );

   // Creates and initializes a three-dimensional array. 
   array<String^, 3>^myArr3 = gcnew array<String^,3>(5,5,5);

   // Sets the element at index 1,2,3.
   myArr3->SetValue( "one-two-three", 1, 2, 3 );
   Console::WriteLine( "[1,2,3]:   {0}", myArr3->GetValue( 1, 2, 3 ) );

   // Creates and initializes a seven-dimensional array. 
   array<String^, 7>^myArr7 = gcnew array<String^,7>(5,5,5,5,5,5,5);

   // Sets the element at index 1,2,3,0,1,2,3. 
   array<Int32>^myIndices = {1,2,3,0,1,2,3};
   myArr7->SetValue( "one-two-three-zero-one-two-three", myIndices );
   Console::WriteLine( "[1,2,3,0,1,2,3]:   {0}", myArr7->GetValue( myIndices ) );

This code produces the following output.

[3]:   three
[1,3]:   one-three
[1,2,3]:   one-two-three
[1,2,3,0,1,2,3]:   one-two-three-zero-one-two-three


.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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