Marshal.Copy Method (IntPtr, IntPtr, Int32, Int32)
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Shared Sub Copy ( _ source As IntPtr, _ destination As IntPtr(), _ startIndex As Integer, _ length As Integer _ ) 'Usage Dim source As IntPtr Dim destination As IntPtr() Dim startIndex As Integer Dim length As Integer Marshal.Copy(source, destination, startIndex, length)
public static function Copy ( source : IntPtr, destination : IntPtr, startIndex : int, length : int )
The memory pointer to copy from.
The array to copy to.
The zero-based index into the array where Copy should start.
The number of array elements to copy.
source, destination, startIndex, or length is a null reference (Nothing in Visual Basic).
Unmanaged, C-style arrays do not contain bounds information, which prevents the startIndex and length parameters from being validated. Thus, the unmanaged data corresponding to the source parameter populates the managed array regardless of its usefulness. You must initalize the managed array with the appropriate size before calling the Marshal.Copy method.
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 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.