Subtraction Operator

UIntPtr.Subtraction Operator (UIntPtr, Int32)

.NET Framework 4.6 and 4.5

Subtracts an offset from the value of an unsigned pointer.

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

public static UIntPtr operator -(
	UIntPtr pointer,
	int offset


Type: System.UIntPtr

The unsigned pointer to subtract the offset from.

Type: System.Int32

The offset to subtract.

Return Value

Type: System.UIntPtr

A new unsigned pointer that reflects the subtraction of offset from pointer.

The Subtraction method defines the subtraction operation for UIntPtr objects. It enables code such as the following.

int[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
UIntPtr ptr = (UIntPtr) arr[arr.GetUpperBound(0)];
for (int ctr = 0; ctr <= arr.GetUpperBound(0); ctr++)
   UIntPtr newPtr = ptr - ctr;
   Console.Write("{0}   ", newPtr);

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

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

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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