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UIntPtr.Subtraction Operator

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
)

Parameters

pointer
Type: System.UIntPtr

The unsigned pointer to subtract the offset from.

offset
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.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, 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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