IntPtr.Addition(IntPtr, Int32) IntPtr.Addition(IntPtr, Int32) IntPtr.Addition(IntPtr, Int32) IntPtr.Addition(IntPtr, Int32) Operator

Definition

Adds an offset to the value of a pointer.

public:
 static IntPtr operator +(IntPtr pointer, int offset);
public static IntPtr operator + (IntPtr pointer, int offset);
static member ( + ) : nativeint * int -> nativeint
Public Shared Operator + (pointer As IntPtr, offset As Integer) As IntPtr

Parameters

pointer
IntPtr IntPtr IntPtr IntPtr

The pointer to add the offset to.

offset
Int32 Int32 Int32 Int32

The offset to add.

Returns

A new pointer that reflects the addition of offset to pointer.

Remarks

The Addition method defines the addition operation for IntPtr objects. It enables code such as the following.

int[] arr = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20 };
unsafe {
   fixed(int* parr = arr)
   {
       IntPtr ptr = new IntPtr(parr);
       for (int ctr = 0; ctr < arr.Length; ctr++)
       {
          IntPtr newPtr = ptr + ctr * sizeof(Int32);
          Console.Write("{0}   ", Marshal.ReadInt32(newPtr));
       } 
   }
}  
// The example displays the following output:
//       2   4   6   8   10   12   14   16   18   20         
Dim arr() As Integer = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20 }
Dim ptr As IntPtr = Marshal.UnsafeAddrOfPinnedArrayElement(arr, 0)
For ctr As Integer = 0 To arr.Length - 1
   Dim newPtr As IntPtr = ptr + ctr * Len(arr(0))
   Console.WriteLine("{0}   ", Marshal.ReadInt32(newPtr))
Next
' The example displays the following output:
'       2   4   6   8   10   12   14   16   18   20

Languages that do not support custom operators can call the Add method instead.

The addition operation does not throw an exception if the result is too large to represent as a pointer on the specified platform. Instead, it is performed in an unchecked context.

The equivalent method for this operator is IntPtr.Add(IntPtr, Int32)

Applies to

See also