Marshal.Copy Method (IntPtr, array<Byte[], Int32, Int32)

This type can be used only by trusted applications. If you try to use its members in a partial-trust application, your code will throw a MethodAccessException exception. This type is security-critical, which restricts its use.


Copies data from an unmanaged memory pointer to a managed 8-bit unsigned integer array.

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


<SecurityCriticalAttribute> _
Public Shared Sub Copy ( _
    source As IntPtr, _
    destination As Byte(), _
    startIndex As Integer, _
    length As Integer _
public static void Copy(
    IntPtr source,
    byte[] destination,
    int startIndex,
    int length


  • destination
    Type: array<System.Byte[]
    The array to copy to.
  • startIndex
    Type: System.Int32
    The zero-based index into the array where Copy should start.
  • length
    Type: System.Int32
    The number of array elements to copy.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.