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Marshal.Copy Method (IntPtr(), Int32, IntPtr, Int32)

Copies data from a one-dimensional, managed IntPtr array to an unmanaged memory pointer.

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

'Declaration
<SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags := SecurityPermissionFlag.UnmanagedCode)> _
Public Shared Sub Copy ( _
	source As IntPtr(), _
	startIndex As Integer, _
	destination As IntPtr, _
	length As Integer _
)
'Usage
Dim source As IntPtr()
Dim startIndex As Integer 
Dim destination As IntPtr 
Dim length As Integer 

Marshal.Copy(source, startIndex, destination, _
	length)

Parameters

source
Type: System.IntPtr()

The one-dimensional array to copy from.

startIndex
Type: System.Int32

The zero-based index into the array where Copy should start.

destination
Type: System.IntPtr

The memory pointer to copy to.

length
Type: System.Int32

The number of array elements to copy.

ExceptionCondition
ArgumentNullException

source, destination, startIndex, or length is Nothing.

You can use this method to copy a subset of a one-dimensional .NET-based IntPtr array to an unmanaged C-style array.

NoteNote:

This method uses SecurityAction.LinkDemand to prevent it from being called from untrusted code; only the immediate caller is required to have SecurityPermissionAttribute.UnmanagedCode permission. If your code can be called from partially trusted code, do not pass user input to Marshal class methods without validation. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0
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