無法轉換結構中的字節數組C＃

Question

我有，而將這些結構的字節數組問題：

[StructLayout(LayoutKind.Sequential)] 
/// <summary> 
/// Packet structure, type 1 (SEND) 
/// </summary> 
internal struct PACKET_SEND 
{ 
    /// <summary> 
    /// Packet Type: 0 for notifications, 1 for status, 2 for login and auth. 
    /// </summary> 
    public Byte Type; 
    /// <summary> 
    /// Packet Key: select it from Packets class. 
    /// </summary> 
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 61)] 
    public char[] Key; 
    /// <summary> 
    /// Account Name. 
    /// </summary> 
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 30)] 
    public char[] AccountName; 
    /// <summary> 
    /// Account Status: 0 for offline, 1 for online, 2 for absent, 3 for busy, 4 for invisible. 
    /// </summary> 
    public Byte Status; 
} 

[StructLayout(LayoutKind.Sequential)] 
/// <summary> 
/// Packet structure, type 2 (RECV) 
/// </summary> 
internal struct PACKET_RECV 
{ 
    /// <summary> 
    /// Packet Type: 0 for notifications, 1 for status, 2 for login and auth. 
    /// </summary> 
    public Byte Type; 
    /// <summary> 
    /// Packet Key: select it from Packets class. 
    /// </summary> 
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 61)] 
    public char[] Key; 
    /// <summary> 
    /// Account Name. 
    /// </summary> 
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 30)] 
    public char[] AccountName; 
} 

使用這些功能：

public static T ByteArrayToStructure<T>(byte[] data) where T : struct 
    { 
     GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned); 
     T stuff = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), 
      typeof(T)); 
     handle.Free(); 
     return stuff; 
    } 

    public static byte[] StructToByteArray(object structure) 
    { 
     byte[] buffer = new byte[Marshal.SizeOf(structure)]; 
     GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned); 
     Marshal.StructureToPtr(structure, handle.AddrOfPinnedObject(), false);//HERE GETS EXCEPTION 
     handle.Free(); 
     return buffer; 
    } 

我收到異常而使用「StructToByteArray」方法：

Type could not be marshaled because the length of an embedded array instance does not match the declared length in the layout. 

想法？請不要只發布解決方案，但解釋會更加讚賞：D。 問候。

Answer 1

看看...

Error : Type could not be marshaled because the length of an embedded array instance does not match the declared length in the layout

......還有......

Error on size of class

...也許你不初始化數組字段 「鑰匙」 &「 AccountName「或者你沒有正確初始化它們。值總是必須是61和30個字符。