Marshal.Copy 方法

  • 參考

定義

命名空間:
System.Runtime.InteropServices
組件:
System.Runtime.InteropServices.dll
組件:
mscorlib.dll
組件:
netstandard.dll

從 Managed 陣列複製資料到 Unmanaged 記憶體指標，或從 Unmanaged 記憶體指標複製資料到 Managed 陣列。

多載

Copy(Single[], Int32, IntPtr, Int32)

從一維、Managed 單精確度浮點數陣列將資料複製到 Unmanaged 記憶體指標。
Copy(IntPtr, Single[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到 Managed 單精確度浮點數陣列。
Copy(IntPtr, IntPtr[], Int32, Int32)

從 Unmanaged 記憶體指標，將資料複製到 Managed IntPtr 陣列。
Copy(IntPtr, Int64[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到 Managed 64 位元帶正負號的整數陣列。
Copy(IntPtr, Int32[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到 Managed 32 位元帶正負號的整數陣列。
Copy(IntPtr, Int16[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到 Managed 16 位元帶正負號的整數陣列。
Copy(IntPtr, Double[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到Managed 雙精確度浮點數陣列。
Copy(IntPtr[], Int32, IntPtr, Int32)

從一維、Managed IntPtr 陣列將資料複製到 Unmanaged 記憶體指標。
Copy(IntPtr, Byte[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到 Managed 8 位元不帶正負號的整數 (Unsigned Integer) 陣列。
Copy(Int64[], Int32, IntPtr, Int32)

從一維、Managed 64 位元帶正負號的整數陣列將資料複製到 Unmanaged 記憶體指標。
Copy(Int32[], Int32, IntPtr, Int32)

從一維、Managed 32 位元帶正負號的整數陣列將資料複製到 Unmanaged 記憶體指標。
Copy(Int16[], Int32, IntPtr, Int32)

從一維、Managed 16 位元帶正負號的整數陣列將資料複製到 Unmanaged 記憶體指標。
Copy(Double[], Int32, IntPtr, Int32)

從一維、Managed 雙精確度浮點數陣列將資料複製到 Unmanaged 記憶體指標。
Copy(Char[], Int32, IntPtr, Int32)

從一維、Managed 字元陣列將資料複製到 Unmanaged 記憶體指標。
Copy(IntPtr, Char[], Int32, Int32)

從 Unmanaged 記憶體指標將資料複製到 Managed 字元陣列。
Copy(Byte[], Int32, IntPtr, Int32)

從一維、Managed 8 位元不帶正負號的整數 (Unsigned Integer) 陣列將資料複製到 Unmanaged 記憶體指標。

Copy(Single[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 單精確度浮點數陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <float> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (float[] source, int startIndex, IntPtr destination, int length);
public static void Copy (float[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : single[] * int * nativeint * int -> unit
static member Copy : single[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Single(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Single[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

source、startIndex、destination 或 length 為 null。

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(IntPtr, Single[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到 Managed 單精確度浮點數陣列。

public:
 static void Copy(IntPtr source, cli::array <float> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, float[] destination, int startIndex, int length);
public static void Copy (IntPtr source, float[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * single[] * int * int -> unit
static member Copy : nativeint * single[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Single(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Single[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(IntPtr, IntPtr[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標，將資料複製到 Managed IntPtr 陣列。

public:
 static void Copy(IntPtr source, cli::array <IntPtr> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, IntPtr[] destination, int startIndex, int length);
public static void Copy (IntPtr source, IntPtr[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * nativeint[] * int * int -> unit
static member Copy : nativeint * nativeint[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As IntPtr(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination

IntPtr[]

nativeint[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化 Managed 陣列，才能呼叫 Marshal.Copy 方法。

適用於

Copy(IntPtr, Int64[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到 Managed 64 位元帶正負號的整數陣列。

public:
 static void Copy(IntPtr source, cli::array <long> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, long[] destination, int startIndex, int length);
public static void Copy (IntPtr source, long[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * int64[] * int * int -> unit
static member Copy : nativeint * int64[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Long(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Int64[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        Int64[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            Int64[] managedArray2 = new Int64[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Int64() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Int64

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(IntPtr, Int32[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到 Managed 32 位元帶正負號的整數陣列。

public:
 static void Copy(IntPtr source, cli::array <int> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, int[] destination, int startIndex, int length);
public static void Copy (IntPtr source, int[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * int[] * int * int -> unit
static member Copy : nativeint * int[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Integer(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Int32[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        int[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            int[] managedArray2 = new int[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Integer() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Integer

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(IntPtr, Int16[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到 Managed 16 位元帶正負號的整數陣列。

public:
 static void Copy(IntPtr source, cli::array <short> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, short[] destination, int startIndex, int length);
public static void Copy (IntPtr source, short[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * int16[] * int * int -> unit
static member Copy : nativeint * int16[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Short(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Int16[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        short[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            short[] managedArray2 = new short[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Short() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Short

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(IntPtr, Double[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到Managed 雙精確度浮點數陣列。

public:
 static void Copy(IntPtr source, cli::array <double> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, double[] destination, int startIndex, int length);
public static void Copy (IntPtr source, double[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * double[] * int * int -> unit
static member Copy : nativeint * double[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Double(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Double[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        double[] managedArray = { 0.1, 0.2, 0.3, 0.4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            double[] managedArray2 = new double[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Double() = {0.1, 0.2, 0.3, 0.4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Double

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(IntPtr[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed IntPtr 陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <IntPtr> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr[] source, int startIndex, IntPtr destination, int length);
public static void Copy (IntPtr[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint[] * int * nativeint * int -> unit
static member Copy : nativeint[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As IntPtr(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source

IntPtr[]

nativeint[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

備註

您可以使用這個方法，將一維 Managed IntPtr 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(IntPtr, Byte[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到 Managed 8 位元不帶正負號的整數 (Unsigned Integer) 陣列。

public:
 static void Copy(IntPtr source, cli::array <System::Byte> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, byte[] destination, int startIndex, int length);
public static void Copy (IntPtr source, byte[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * byte[] * int * int -> unit
static member Copy : nativeint * byte[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Byte(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Byte[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        byte[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            byte[] managedArray2 = new byte[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Byte() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Byte

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(Int64[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 64 位元帶正負號的整數陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <long> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (long[] source, int startIndex, IntPtr destination, int length);
public static void Copy (long[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : int64[] * int * nativeint * int -> unit
static member Copy : int64[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Long(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Int64[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

source、startIndex、destination 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        Int64[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            Int64[] managedArray2 = new Int64[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Int64() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Int64

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(Int32[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 32 位元帶正負號的整數陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <int> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (int[] source, int startIndex, IntPtr destination, int length);
public static void Copy (int[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : int[] * int * nativeint * int -> unit
static member Copy : int[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Integer(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Int32[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        int[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            int[] managedArray2 = new int[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Integer() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Integer

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(Int16[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 16 位元帶正負號的整數陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <short> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (short[] source, int startIndex, IntPtr destination, int length);
public static void Copy (short[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : int16[] * int * nativeint * int -> unit
static member Copy : int16[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Short(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Int16[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

source、startIndex、destination 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        short[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            short[] managedArray2 = new short[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Short() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Short

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(Double[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 雙精確度浮點數陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <double> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (double[] source, int startIndex, IntPtr destination, int length);
public static void Copy (double[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : double[] * int * nativeint * int -> unit
static member Copy : double[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Double(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Double[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

source、startIndex、destination 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        double[] managedArray = { 0.1, 0.2, 0.3, 0.4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            double[] managedArray2 = new double[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Double() = {0.1, 0.2, 0.3, 0.4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Double

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(Char[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 字元陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <char> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (char[] source, int startIndex, IntPtr destination, int length);
public static void Copy (char[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : char[] * int * nativeint * int -> unit
static member Copy : char[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Char(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Char[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

startIndex、destination 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

// Remember that the actual size of System.Char in unmanaged memory is 2.
using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        char[] managedArray = new char[1000];
        managedArray[0] = 'a';
        managedArray[1] = 'b';
        managedArray[2] = 'c';
        managedArray[3] = 'd';
        managedArray[999] = 'Z';

        // Initialize unmanaged memory to hold the array.
        // int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  // Incorrect
        int size = Marshal.SystemDefaultCharSize * managedArray.Length;       // Correct

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            char[] managedArray2 = new char[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}",
                               managedArray2[0], managedArray2[1], managedArray2[2], managedArray2[3],
                               managedArray2[999]);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

' Remember that the actual size of System.Char in unmanaged memory is 2.

Imports System.Runtime.InteropServices



Module Module1

    Sub Main()
        ' Create a managed array.
        Dim managedArray As Char() = New Char(999) {}
        managedArray(0) = "a"c
        managedArray(1) = "b"c
        managedArray(2) = "c"c
        managedArray(3) = "d"c
        managedArray(999) = "Z"c

        ' Initialize unmanaged memory to hold the array.
        ' Dim size As Integer = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  ' Incorrect
        Dim size As Integer = Marshal.SystemDefaultCharSize * managedArray.Length       ' Correct

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.

            Dim managedArray2 As Char() = New Char(managedArray.Length - 1) {}

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}", managedArray2(0), managedArray2(1), managedArray2(2), managedArray2(3), managedArray2(999))


            Console.WriteLine("The array was copied to unmanaged memory and back.")
        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)

        End Try
    End Sub
End Module

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於

Copy(IntPtr, Char[], Int32, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從 Unmanaged 記憶體指標將資料複製到 Managed 字元陣列。

public:
 static void Copy(IntPtr source, cli::array <char> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, char[] destination, int startIndex, int length);
public static void Copy (IntPtr source, char[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * char[] * int * int -> unit
static member Copy : nativeint * char[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Char(), startIndex As Integer, length As Integer)

參數

source
IntPtr

nativeint

要複製的來源記憶體指標。

destination
Char[]

要複製到其中的陣列。

startIndex
Int32

複製應該在此處開始之目的地陣列中以零起始的索引。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentNullException

source、destination、startIndex 或 length 為 null。

範例

下列範例會將陣列複製到 Unmanaged 記憶體，然後將 Unmanaged 陣組複製到 Managed 記憶體。

// Remember that the actual size of System.Char in unmanaged memory is 2.
using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        char[] managedArray = new char[1000];
        managedArray[0] = 'a';
        managedArray[1] = 'b';
        managedArray[2] = 'c';
        managedArray[3] = 'd';
        managedArray[999] = 'Z';

        // Initialize unmanaged memory to hold the array.
        // int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  // Incorrect
        int size = Marshal.SystemDefaultCharSize * managedArray.Length;       // Correct

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            char[] managedArray2 = new char[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}",
                               managedArray2[0], managedArray2[1], managedArray2[2], managedArray2[3],
                               managedArray2[999]);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

' Remember that the actual size of System.Char in unmanaged memory is 2.

Imports System.Runtime.InteropServices



Module Module1

    Sub Main()
        ' Create a managed array.
        Dim managedArray As Char() = New Char(999) {}
        managedArray(0) = "a"c
        managedArray(1) = "b"c
        managedArray(2) = "c"c
        managedArray(3) = "d"c
        managedArray(999) = "Z"c

        ' Initialize unmanaged memory to hold the array.
        ' Dim size As Integer = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  ' Incorrect
        Dim size As Integer = Marshal.SystemDefaultCharSize * managedArray.Length       ' Correct

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.

            Dim managedArray2 As Char() = New Char(managedArray.Length - 1) {}

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}", managedArray2(0), managedArray2(1), managedArray2(2), managedArray2(3), managedArray2(999))


            Console.WriteLine("The array was copied to unmanaged memory and back.")
        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)

        End Try
    End Sub
End Module

備註

Unmanaged、C 樣式數位不包含界限資訊，這可防止 startIndex 驗證 和 length 參數。 因此，對應至 source 參數的 Unmanaged 數據會填入 Managed 陣列，而不論其有用性為何。 您必須使用適當的大小初始化Managed陣列，才能呼叫此方法。

另請參閱

適用於

Copy(Byte[], Int32, IntPtr, Int32)

來源:
Marshal.cs
來源:
Marshal.cs
來源:
Marshal.cs

從一維、Managed 8 位元不帶正負號的整數 (Unsigned Integer) 陣列將資料複製到 Unmanaged 記憶體指標。

public:
 static void Copy(cli::array <System::Byte> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (byte[] source, int startIndex, IntPtr destination, int length);
public static void Copy (byte[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : byte[] * int * nativeint * int -> unit
static member Copy : byte[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Byte(), startIndex As Integer, destination As IntPtr, length As Integer)

參數

source
Byte[]

要複製的一維陣列。

startIndex
Int32

複製應該在此處開始之來源陣列中以零起始的索引。

destination
IntPtr

nativeint

要複製到的記憶體指標。

length
Int32

要複製的陣列元素數目。

屬性
SecurityCriticalAttribute

例外狀況

ArgumentOutOfRangeException

startIndex 和 length 無效。

ArgumentNullException

source、startIndex、destination 或 length 為 null。

範例

下列範例會使用 Copy(Byte[], Int32, IntPtr, Int32) 多載將數位複製到 Unmanaged 記憶體，然後使用多載將 Unmanaged 陣列複製到 Managed 記憶體 Copy(IntPtr, Byte[], Int32, Int32) 。

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        byte[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            byte[] managedArray2 = new byte[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Byte() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Byte

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

備註

您可以使用這個方法，將一維 Managed 陣列的子集複製到 Unmanaged C 樣式陣列。

適用於