C#调用ocx错误
0
悬赏园豆：200
[已解决问题]
解决于 2014-05-23 10:09
我现在需要调用厂家提供的一个ocx控件，注册完之后，然后VS里添加com引用，其中有一个方法
1 [DispId(338)] int AddOnePerson(object PersonInfo);//这个方法是VS自动生成的
其中PersonInfo结构厂商Demo中有定义:
1 //Personnel Info 2 typedef struct _PersonInfo 3 { 4 long PersonnelID; 5 long DeptID; 6 long GroupID; 7 TMyNameWideString LastName; 8 TMyNameWideString FirstName; 9 TMyNameWideString PersonnelCode; 10 TMyNameWideString Gander; 11 TMyNameWideString IDCard; 12 SYSTEMTIME Birthday; 13 TMyNameWideString Marriage; 14 wchar_t Nativeplace[30]; 15 wchar_t Nation[30]; 16 SYSTEMTIME AccessionDate; 17 SYSTEMTIME DimissionDate; 18 wchar_t Duty[30]; 19 TMyNameWideString Diploma; 20 wchar_t School[30]; 21 wchar_t Speciality[30]; 22 TMyLongNameWideString Address; 23 TMyNameWideString Phone; 24 TMyNameWideString Email; 25 TMyLongNameWideString Remark; 26 long FloorNumber; 27 TMyLongNameWideString CustomField1; 28 TMyLongNameWideString CustomField2; 29 TMyLongNameWideString CustomField3; 30 TMyLongNameWideString CustomField4; 31 TMyLongNameWideString CustomField5; 32 TMyLongNameWideString CustomDict1; 33 TMyLongNameWideString CustomDict2; 34 TMyLongNameWideString CustomDict3; 35 TMyLongNameWideString CustomDict4; 36 TMyLongNameWideString CustomDict5; 37 boolean HasPhoto; 38 boolean IsLose; 39 boolean IsStop; 40 boolean Reserve; 41 } TPersonInfo, *PPersonInfo; 42 43 TMyLongNameWideString 结构定义： 44 typedef struct _MyLongNameWideString 45 { 46 wchar_t Names[50]; 47 } TMyLongNameWideString, *PMyLongNameWideString; 48 49 TMyNameWideString 结构定义： 50 typedef struct _MyNameWideString 51 { 52 wchar_t Names[20]; 53 } TMyNameWideString, *PMyNameWideString; 54 55 56 57 Demo中调用是这样的： 58 long CSphinxOPCClientX::AddOnePerson(const VARIANT& PersonInfo) 59 { 60 long result; 61 static BYTE parms[] = 62 VTS_VARIANT; 63 InvokeHelper(0x152, DISPATCH_METHOD, VT_I4, (void*)&result, parms, 64 &PersonInfo); 65 return result; 66 }
我自己写的一个C#程序是这样使用的：
1 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] 2 public struct TPersonInfo 3 { 4 public int PersonnelID; 5 public int DeptID; 6 public TMyNameWideString LastName; 7 public TMyNameWideString FirstName; 8 public TMyNameWideString PersonnelCode; 9 public TMyNameWideString Gander; 10 public TMyNameWideString IDCard; 11 public SYSTEMTIME Birthday; 12 public TMyNameWideString Marriage; 13 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 30)] 14 public string Nativeplace; 15 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 30)] 16 public string Nation; 17 public SYSTEMTIME AccessionDate; 18 public SYSTEMTIME DimissionDate; 19 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 30)] 20 public string Duty; 21 public TMyNameWideString Diploma; 22 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 30)] 23 public string School; 24 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 30)] 25 public string Speciality; 26 public TMyLongNameWideString Address; 27 public TMyLongNameWideString Phone; 28 public TMyLongNameWideString Email; 29 public TMyLongNameWideString Remark; 30 public int FloorNumber; 31 public TMyLongNameWideString CustomField1; 32 public TMyLongNameWideString CustomField2; 33 public TMyLongNameWideString CustomField3; 34 public TMyLongNameWideString CustomField4; 35 public TMyLongNameWideString CustomField5; 36 public TMyLongNameWideString CustomDict1; 37 public TMyLongNameWideString CustomDict2; 38 public TMyLongNameWideString CustomDict3; 39 public TMyLongNameWideString CustomDict4; 40 public TMyLongNameWideString CustomDict5; 41 public bool HasPhoto; 42 public bool IsLose; 43 public bool IsStop; 44 public bool Reserve; 45 } 46 47 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] 48 public struct TMyNameWideString 49 { 50 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 50)] 51 public string Names; 52 } 53 54 55 /// <summary> 56 /// 57 /// </summary> 58 /// 59 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] 60 public struct TMyLongNameWideString 61 { 62 [MarshalAs(UnmanagedType.LPWStr, SizeConst = 50)] 63 public string Names; 64 } 65 66 67 [StructLayout(LayoutKind.Sequential)] 68 public struct SYSTEMTIME 69 { 70 public int wYear; 71 public int wMonth; 72 public int wDayOfWeek; 73 public int wDay; 74 public int wHour; 75 public int wMinute; 76 public int wSecond; 77 public int wMilliseconds; 78 } 79 80 81 82 调用： 83 TPersonInfo tPerson = new TPersonInfo(); 84 85 VariantWrapper vv = new VariantWrapper(o); 86 int iii = client.AddOnePerson(vv); 87 调用时候就出错 了，提示“System.ArgumentException: VariantWrappers 不能存储在 Variant 中。 88 在 System.StubHelpers.ObjectMarshaler.ConvertToNative(Object objSrc, IntPtr pDstVariant)”
有谁做过类似项目吗？怎么解决？？
最佳答案
0
估计是.net com interop 中的VARIANT封送有问题
收获园豆：100
其他回答(3)
0
int iii = client.AddOnePerson(tPerson);
收获园豆：50
这个试过了，会提示“值不在预期的范围内”
@开国伟人: wchar_t Names[20] 改成这样：
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)]
public string Names;
0
public int PersonnelID; 这个是不是应该用long类型呀
然后，int iii = client.AddOnePerson(tPerson);
收获园豆：50
基本上和这个没关系
@开国伟人: 这个最后咋解决的
0
二代身份证验证机具的OCX，好多厂商说明书不明白，测了好久才通过
能否说明一下，应该怎么弄？
你做的那个有传递结构参数吧？并且C++里面使用的是variant类型。
