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Marshal.PtrToStructure Method (IntPtr, Object)

Marshals data from an unmanaged block of memory to a managed object.

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

public static void PtrToStructure(
	IntPtr ptr,
	Object structure


Type: System.IntPtr
A pointer to an unmanaged block of memory.
Type: System.Object
The object to which the data is to be copied. This must be an instance of a formatted class.


Structure layout is not sequential or explicit.


Structure is a boxed value type.

PtrToStructure is often necessary in COM interop and platform invoke when structure parameters are represented as an System.IntPtr value. You cannot use this overload method with value types.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

  • SecurityCriticalAttribute 

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

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.