Export (0) Print
Expand All

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

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

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

static member Copy : 
        source:byte[] * 
        startIndex:int * 
        destination:IntPtr * 
        length:int -> unit

Parameters

source
Type: System.Byte[]

The one-dimensional array to copy from.

startIndex
Type: System.Int32

The zero-based index in the source array where copying should start.

destination
Type: System.IntPtr

The memory pointer to copy to.

length
Type: System.Int32

The number of array elements to copy.

ExceptionCondition
ArgumentOutOfRangeException

startIndex and length are not valid.

ArgumentNullException

source, startIndex, destination, or length is a null reference (Nothing in Visual Basic).

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

The following example copies an array to unmanaged memory by using the Copy(Byte[], Int32, IntPtr, Int32) overload, and then copies the unmanaged array back to managed memory by using the Copy(IntPtr, Byte[], Int32, Int32) overload.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

  • SecurityCriticalAttribute 

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

Show:
© 2015 Microsoft