Marshal.WriteInt64 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體中。 支援寫入未配置的記憶體位置。
多載
WriteInt64(Object, Int32, Int64) |
已淘汰.
在指定的位移,將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體。 |
WriteInt64(IntPtr, Int64) |
將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體中。 |
WriteInt64(IntPtr, Int32, Int64) |
在指定的位移,將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體。 |
WriteInt64(Object, Int32, Int64)
警告
WriteInt64(Object, Int32, Int64) may be unavailable in future releases.
在指定的位移,將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體。
public:
static void WriteInt64(System::Object ^ ptr, int ofs, long val);
[System.Obsolete("WriteInt64(Object, Int32, Int64) may be unavailable in future releases.")]
[System.Security.SecurityCritical]
public static void WriteInt64 (object ptr, int ofs, long val);
[System.Obsolete("WriteInt64(Object, Int32, Int64) may be unavailable in future releases.")]
public static void WriteInt64 (object ptr, int ofs, long val);
public static void WriteInt64 (object ptr, int ofs, long val);
[System.Security.SecurityCritical]
public static void WriteInt64 (object ptr, int ofs, long val);
[<System.Obsolete("WriteInt64(Object, Int32, Int64) may be unavailable in future releases.")>]
[<System.Security.SecurityCritical>]
static member WriteInt64 : obj * int * int64 -> unit
[<System.Obsolete("WriteInt64(Object, Int32, Int64) may be unavailable in future releases.")>]
static member WriteInt64 : obj * int * int64 -> unit
static member WriteInt64 : obj * int * int64 -> unit
[<System.Security.SecurityCritical>]
static member WriteInt64 : obj * int * int64 -> unit
Public Shared Sub WriteInt64 (ptr As Object, ofs As Integer, val As Long)
參數
- ptr
- Object
目標物件之 Unmanaged 記憶體中的基底位址。
- ofs
- Int32
額外的位元組位移,會先加入至參數 ptr
,然後再進行寫入。
- val
- Int64
要寫入的值。
- 屬性
例外狀況
基底位址 (ptr
) 加上位移位元組 (ofs
) 會產生 Null 或無效的位址。
ptr
是 ArrayWithOffset 物件。 這個方法不會接受 ArrayWithOffset 參數。
備註
WriteInt64 可讓您與 Unmanaged 64 位帶正負號的陣列直接互動,而不需要) 在設定其元素值之前,先將 Marshal.Copy 整個 Unmanaged 陣組複製 ( (。
支援寫入未配置的記憶體位置。
另請參閱
適用於
WriteInt64(IntPtr, Int64)
- 來源:
- Marshal.cs
- 來源:
- Marshal.cs
- 來源:
- Marshal.cs
將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體中。
public:
static void WriteInt64(IntPtr ptr, long val);
[System.Security.SecurityCritical]
public static void WriteInt64 (IntPtr ptr, long val);
public static void WriteInt64 (IntPtr ptr, long val);
[<System.Security.SecurityCritical>]
static member WriteInt64 : nativeint * int64 -> unit
static member WriteInt64 : nativeint * int64 -> unit
Public Shared Sub WriteInt64 (ptr As IntPtr, val As Long)
參數
- ptr
-
IntPtr
nativeint
Unmanaged 記憶體中要寫入的位址。
- val
- Int64
要寫入的值。
- 屬性
例外狀況
範例
下列範例示範如何使用 和 WriteInt64 方法來讀取和寫入 Unmanaged 陣列ReadInt64。
static void ReadWriteInt64()
{
// Allocate unmanaged memory.
int elementSize = 8;
IntPtr unmanagedArray = Marshal.AllocHGlobal(10 * elementSize);
// Set the 10 elements of the C-style unmanagedArray
for (int i = 0; i < 10; i++)
{
Marshal.WriteInt64(unmanagedArray, i * elementSize, ((Int64)(i + 1)));
}
Console.WriteLine("Unmanaged memory written.");
Console.WriteLine("Reading unmanaged memory:");
// Print the 10 elements of the C-style unmanagedArray
for (int i = 0; i < 10; i++)
{
Console.WriteLine(Marshal.ReadInt64(unmanagedArray, i * elementSize));
}
Marshal.FreeHGlobal(unmanagedArray);
Console.WriteLine("Done. Press Enter to continue.");
Console.ReadLine();
}
Sub ReadWriteInt64()
' Allocate unmanaged memory.
Dim elementSize As Integer = 8
Dim unmanagedArray As IntPtr = Marshal.AllocHGlobal(10 * elementSize)
' Set the 10 elements of the C-style unmanagedArray
For i As Integer = 0 To 9
Marshal.WriteInt64(unmanagedArray, i * elementSize, CType(i + 1, Int64))
Next i
Console.WriteLine("Unmanaged memory written.")
Console.WriteLine("Reading unmanaged memory:")
' Print the 10 elements of the C-style unmanagedArray
For i As Integer = 0 To 9
Console.WriteLine(Marshal.ReadInt64(unmanagedArray, i * elementSize))
Next i
Marshal.FreeHGlobal(unmanagedArray)
Console.WriteLine("Done. Press Enter to continue.")
Console.ReadLine()
End Sub
備註
WriteInt64 可讓您與 Unmanaged 64 位帶正負號的陣列直接互動,而不需要) 在設定其元素值之前,先將 Marshal.Copy 整個 Unmanaged 陣組複製 ( (。
支援寫入未配置的記憶體位置。
另請參閱
適用於
WriteInt64(IntPtr, Int32, Int64)
- 來源:
- Marshal.cs
- 來源:
- Marshal.cs
- 來源:
- Marshal.cs
在指定的位移,將 64 位元帶正負號的整數值寫入 Unmanaged 記憶體。
public:
static void WriteInt64(IntPtr ptr, int ofs, long val);
[System.Security.SecurityCritical]
public static void WriteInt64 (IntPtr ptr, int ofs, long val);
public static void WriteInt64 (IntPtr ptr, int ofs, long val);
[<System.Security.SecurityCritical>]
static member WriteInt64 : nativeint * int * int64 -> unit
static member WriteInt64 : nativeint * int * int64 -> unit
Public Shared Sub WriteInt64 (ptr As IntPtr, ofs As Integer, val As Long)
參數
- ptr
-
IntPtr
nativeint
要寫入之 Unmanaged 記憶體中的基底位址。
- ofs
- Int32
額外的位元組位移,會先加入至參數 ptr
,然後再進行寫入。
- val
- Int64
要寫入的值。
- 屬性
例外狀況
基底位址 (ptr
) 加上位移位元組 (ofs
) 會產生 Null 或無效的位址。
範例
下列範例示範如何使用 和 WriteInt64 方法來讀取和寫入 Unmanaged 陣列ReadInt64。
static void ReadWriteInt64()
{
// Allocate unmanaged memory.
int elementSize = 8;
IntPtr unmanagedArray = Marshal.AllocHGlobal(10 * elementSize);
// Set the 10 elements of the C-style unmanagedArray
for (int i = 0; i < 10; i++)
{
Marshal.WriteInt64(unmanagedArray, i * elementSize, ((Int64)(i + 1)));
}
Console.WriteLine("Unmanaged memory written.");
Console.WriteLine("Reading unmanaged memory:");
// Print the 10 elements of the C-style unmanagedArray
for (int i = 0; i < 10; i++)
{
Console.WriteLine(Marshal.ReadInt64(unmanagedArray, i * elementSize));
}
Marshal.FreeHGlobal(unmanagedArray);
Console.WriteLine("Done. Press Enter to continue.");
Console.ReadLine();
}
Sub ReadWriteInt64()
' Allocate unmanaged memory.
Dim elementSize As Integer = 8
Dim unmanagedArray As IntPtr = Marshal.AllocHGlobal(10 * elementSize)
' Set the 10 elements of the C-style unmanagedArray
For i As Integer = 0 To 9
Marshal.WriteInt64(unmanagedArray, i * elementSize, CType(i + 1, Int64))
Next i
Console.WriteLine("Unmanaged memory written.")
Console.WriteLine("Reading unmanaged memory:")
' Print the 10 elements of the C-style unmanagedArray
For i As Integer = 0 To 9
Console.WriteLine(Marshal.ReadInt64(unmanagedArray, i * elementSize))
Next i
Marshal.FreeHGlobal(unmanagedArray)
Console.WriteLine("Done. Press Enter to continue.")
Console.ReadLine()
End Sub
備註
WriteInt64 可讓您與 Unmanaged 64 位帶正負號的陣列直接互動,而不需要) 在設定其元素值之前,先將 Marshal.Copy 整個 Unmanaged 陣組複製 ( (。
支援寫入未配置的記憶體位置。