Marshal::ReadIntPtr Method (IntPtr, Int32)

 

Reads a processor native sized integer at a given offset from unmanaged memory.

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

public:
[SecurityCriticalAttribute]
static IntPtr ReadIntPtr(
	IntPtr ptr,
	int ofs
)

Parameters

ptr
Type: System::IntPtr

The base address in unmanaged memory from which to read.

ofs
Type: System::Int32

An additional byte offset, which is added to the ptr parameter before reading.

Return Value

Type: System::IntPtr

The integer read from unmanaged memory at the given offset.

Exception Condition
AccessViolationException

Base address (ptr) plus offset byte (ofs) produces a null or invalid address.

ReadIntPtr enables direct interaction with an unmanaged C-style IntPtr array, eliminating the expense of copying an entire unmanaged array (using Marshal::Copy) to a separate managed array before reading its element values.

Reading from unaligned memory locations is supported.

The following example demonstrates how to read and write to an unmanaged array using the ReadIntPtr and WriteIntPtr methods.

No code example is currently available or this language may not be supported.

SecurityCriticalAttribute

requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
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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