using c++ dll in asp.NET c# project?
using c++ dll in asp.NET c# project?
我在.NET项目中使用了一个dll。我试着用c#来管理它，并且存在函数使用_H_ cardData_MG结构和返回_H_。
c++
int __Read_And_Get_Card_Data ( DWORD deviceSerialNo, DWORD password, DWORD ip, WORD port,
_H_cardData_MG *cardData )
C#
public static extern int __Read_And_Get_Card_Data(System.UInt32 deviceSerialNo, System.UInt32 password, System.UInt32 ip, System.UInt16 port, ref _H_cardData_MG kartdata);
如上所述，我试图将头文件更改为c#class，但我想我不能定它们的尺寸？
错误为"指定的数组不是预期的类型。"你知道这是怎么回事吗？？我可以只通过字节数组获取值吗？我的意思是；
byte[] bytarr = new byte[256]
public static extern int __Read_And_Get_Card_Data(System.UInt32 deviceSerialNo, System.UInt32 password, System.UInt32 ip, System.UInt16 port, ref byte[] bytarr);
但我收到错误：引发了"System.ExecutionEngineException"类型的异常
c++头文件代码；
struct _H_cardData_MG
{
int cardCode;
int credit;
int minCredit;
WORD reserved01;
WORD endUserCode;
WORD password;
BYTE groupCode;
BYTE cardType:2;
BYTE disabled:1;
BYTE outOfCtrlDirection:1;
BYTE bonusUsage:2;
BYTE :2;
char name[16];
struct _H_lastAccess_MF appData[4];
BYTE creditMultipler;
BYTE bonusRatio;
BYTE reserved02;
BYTE reserved03;
int bonus;
BYTE reserved04[4];
};
struct _H_lastAccess_MF // size=12
{ WORD lastUsedHourMin:11;
WORD in:1;
WORD :4;
SHORT lastUsedDate;
WORD wStart:11;
WORD limitCnt:3;
WORD :2;
WORD wEnd:11;
WORD limitMax:3;
WORD :2;
WORD expireDate;
WORD expireHourMin:11;
WORD prePaymentCredit:5;
};
C#编码
public class _H_cardData_MG
{
public int cardCode { get; set; }
public int credit { get; set; }
public int minCredit { get; set; }
public UInt16 reserved01 { get; set; }
public UInt16 endUserCode { get; set; }
public UInt16 password { get; set; }
public byte groupCode { get; set; }
public byte cardType { get; set; }
public byte disabled { get; set; }
public byte outOfCtrlDirection { get; set; }
public byte bonusUsage { get; set; }
public byte bos { get; set; }
public char[] name = new char[16] ;
public _H_lastAccess_MF [] appData = new _H_lastAccess_MF [4];
public byte creditMultipler{ get; set; }
public byte bonusRatio{ get; set; }
public byte reserved02{ get; set; }
public byte reserved03{ get; set; }
public int bonus{ get; set; }
public byte[] reserved04 = new byte[4];
};
public struct _H_lastAccess_MF // size=12
{
public UInt16 lastUsedHourMin { get; set; }
public UInt16 zin { get; set; }
public UInt16 bos1 { get; set; }
public short lastUsedDate { get; set; }
public UInt16 wStart{ get; set; }
public UInt16 limitCnt{ get; set; }
public UInt16 bos2{ get; set; }
public UInt16 wEnd{ get; set; }
public UInt16 limitMax{ get; set; }
public UInt16 bos3 { get; set; }
public UInt16 expireDate { get; set; }
public UInt16 expireHourMin{ get; set; }
public UInt16 prePaymentCredit{ get; set; }
};
我做错了什么，或者有什么办法吗？？？
这应该适用于C#结构来保存您想要的数据：
[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet=System.Runtime.InteropServices.CharSet.Ansi)]
public struct _H_cardData_MG {
/// int
public int cardCode;
/// int
public int credit;
/// int
public int minCredit;
/// WORD->unsigned short
public ushort reserved01;
/// WORD->unsigned short
public ushort endUserCode;
/// WORD->unsigned short
public ushort password;
/// BYTE->unsigned char
public byte groupCode;
/// cardType : 2
///disabled : 1
///outOfCtrlDirection : 1
///bonusUsage : 2
///AnonymousMember1 : 2
public uint bitvector1;
/// char[16]
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst=16)]
public string name;
/// _H_lastAccess_MF[4]
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=4, ArraySubType=System.Runtime.InteropServices.UnmanagedType.Struct)]
public _H_lastAccess_MF[] appData;
/// BYTE->unsigned char
public byte creditMultipler;
/// BYTE->unsigned char
public byte bonusRatio;
/// BYTE->unsigned char
public byte reserved02;
/// BYTE->unsigned char
public byte reserved03;
/// int
public int bonus;
/// BYTE[4]
[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst=4, ArraySubType=System.Runtime.InteropServices.UnmanagedType.I1)]
public byte[] reserved04;
public uint cardType {
get {
return ((uint)((this.bitvector1 & 3u)));
}
set {
this.bitvector1 = ((uint)((value | this.bitvector1)));
}
}
public uint disabled {
get {
return ((uint)(((this.bitvector1 & 4u)
/ 4)));
}
set {
this.bitvector1 = ((uint)(((value * 4)
| this.bitvector1)));
}
}
public uint outOfCtrlDirection {
get {
return ((uint)(((this.bitvector1 & 8u)
/ 8)));
}
set {
this.bitvector1 = ((uint)(((value * 8)
| this.bitvector1)));
}
}
public uint bonusUsage {
get {
return ((uint)(((this.bitvector1 & 48u)
/ 16)));
}
set {
this.bitvector1 = ((uint)(((value * 16)
| this.bitvector1)));
}
}
public uint AnonymousMember1 {
get {
return ((uint)(((this.bitvector1 & 192u)
/ 64)));
}
set {
this.bitvector1 = ((uint)(((value * 64)
| this.bitvector1)));
}
}
}
[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public struct _H_lastAccess_MF {
/// lastUsedHourMin : 11
///in : 1
///AnonymousMember1 : 4
public uint bitvector1;
/// SHORT->short
public short lastUsedDate;
/// wStart : 11
///limitCnt : 3
///AnonymousMember2 : 2
///wEnd : 11
///limitMax : 3
///AnonymousMember3 : 2
public uint bitvector2;
/// WORD->unsigned short
public ushort expireDate;
/// expireHourMin : 11
///prePaymentCredit : 5
public uint bitvector3;
public uint lastUsedHourMin {
get {
return ((uint)((this.bitvector1 & 2047u)));
}
set {
this.bitvector1 = ((uint)((value | this.bitvector1)));
}
}
public uint @in {
get {
return ((uint)(((this.bitvector1 & 2048u)
/ 2048)));
}
set {
this.bitvector1 = ((uint)(((value * 2048)
| this.bitvector1)));
}
}
public uint AnonymousMember1 {
get {
return ((uint)(((this.bitvector1 & 61440u)
/ 4096)));
}
set {
this.bitvector1 = ((uint)(((value * 4096)
| this.bitvector1)));
}
}
public uint wStart {
get {
return ((uint)((this.bitvector2 & 2047u)));
}
set {
this.bitvector2 = ((uint)((value | this.bitvector2)));
}
}
public uint limitCnt {
get {
return ((uint)(((this.bitvector2 & 14336u)
/ 2048)));
}
set {
this.bitvector2 = ((uint)(((value * 2048)
| this.bitvector2)));
}
}
public uint AnonymousMember2 {
get {
return ((uint)(((this.bitvector2 & 49152u)
/ 16384)));
}
set {
this.bitvector2 = ((uint)(((value * 16384)
| this.bitvector2)));
}
}
public uint wEnd {
get {
return ((uint)(((this.bitvector2 & 134152192u)
/ 65536)));
}
set {
this.bitvector2 = ((uint)(((value * 65536)
| this.bitvector2)));
}
}
public uint limitMax {
get {
return ((uint)(((this.bitvector2 & 939524096u)
/ 134217728)));
}
set {
this.bitvector2 = ((uint)(((value * 134217728)
| this.bitvector2)));
}
}
public uint AnonymousMember3 {
get {
return ((uint)(((this.bitvector2 & 3221225472u)
/ 1073741824)));
}
set {
this.bitvector2 = ((uint)(((value * 1073741824)
| this.bitvector2)));
}
}
public uint expireHourMin {
get {
return ((uint)((this.bitvector3 & 2047u)));
}
set {
this.bitvector3 = ((uint)((value | this.bitvector3)));
}
}
public uint prePaymentCredit {
get {
return ((uint)(((this.bitvector3 & 63488u)
/ 2048)));
}
set {
this.bitvector3 = ((uint)(((value * 2048)
| this.bitvector3)));
}
}
}
希望这是你想要的：）
方法p/Invoke签名应该如下所示：
[System.Runtime.InteropServices.DllImportAttribute("Your.dll", EntryPoint="__Read_And_Get_Card_Data")]
public static extern int __Read_And_Get_Card_Data(uint deviceSerialNo, uint password, uint ip, ushort port, ref _H_cardData_MG cardData) ;
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