Upravit

Sdílet prostřednictvím

UIntPtr.Add(UIntPtr, Int32) Method

  • Reference

Definition

Namespace:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
UIntPtr.cs
Source:
UIntPtr.cs
Source:
UIntPtr.cs

Adds an offset to an unsigned integer.

public:
 static UIntPtr Add(UIntPtr pointer, int offset);
public static UIntPtr Add (UIntPtr pointer, int offset);
static member Add : unativeint * int -> unativeint
Public Shared Function Add (pointer As UIntPtr, offset As Integer) As UIntPtr

Parameters

pointer
UIntPtr

unativeint

The unsigned integer to add the offset to.

offset
Int32

The offset to add.

Returns

UIntPtr

unativeint

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

Examples

The following example instantiates a UIntPtr object that points to the beginning of a ten-element array, and then calls the Add method to iterate the elements in the array.

using System;

public class Example
{
   public static void Main()
   {
      int[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
      UIntPtr ptr = (UIntPtr) arr[0];
      for (int ctr = 0; ctr < arr.Length; ctr++)
      {
         UIntPtr newPtr = UIntPtr.Add(ptr, ctr);
         Console.Write("{0}   ", newPtr);
      }      
   }
}
// The example displays the following output:
//       1   2   3   4   5   6   7   8   9   10

open System

let arr = [| 1; 2; 3; 4; 5; 6; 7; 8; 9; 10 |]
let ptr = UIntPtr(uint arr[0])
for i = 0 to arr.Length - 1 do
    let newPtr = UIntPtr.Add(ptr, i)
    printf $"{newPtr}   "
// The example displays the following output:
//       1   2   3   4   5   6   7   8   9   10

Module Example
   Public Sub Main()
      Dim arr() As Integer = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }
      Dim ptr As UIntPtr = CType(arr(0), UIntPtr)
      For ctr As Integer= 0 To arr.Length - 1
         Dim newPtr As UIntPtr = UIntPtr.Add(ptr, ctr)
         Console.Write("{0}   ", newPtr)
      Next
   End Sub
End Module
' The example displays the following output:
'       1   2   3   4   5   6   7   8   9   10

Remarks

The Add method does not throw an exception if the result is too large to represent as an unsigned integer in the executing process. Instead, the addition operation is performed in an unchecked context.

Languages that do not support operator overloading or custom operators can use this method to add an offset to the value of a pointer.

Applies to

See also