Marshal::ReadIntPtr Method (IntPtr)
Reads a processor native-sized integer from unmanaged memory.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- ptr
-
Type:
System::IntPtr
The address in unmanaged memory from which to read.
Return Value
Type: System::IntPtrThe integer read from unmanaged memory. A 32 bit integer is returned on 32 bit machines and a 64 bit integer is returned on 64 bit machines.
| Exception | Condition |
|---|---|
| AccessViolationException | ptr is not a recognized format. -or- ptr is null. -or- ptr is invalid. |
ReadIntPtr has an implied offset of 0. This method 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.
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1