c#com对象无法获取ref对象值

我们试图获取COM对象返回的值，函数是：

bool AxSB100BPC.GetEnrollData(int dwMachineNumber,
int dwEnrollNumber,
int dwEMachineNumber,
int dwBackupNumber,
ref int dwMachinePrivilege,
ref object dwEnrollData,
ref int dwPassWord

我们将此函数称为：

vRet = axSB100BPC1.GetEnrollData(mMachineNumber,
                                 vEnrollNumber,
                                 vEMachineNumber,
                                 vFingerNumber,
                                 ref vPrivilege,
                                 ref oglngEnrollData,
                                 ref glngEnrollPData);

问题在于oglngEnrollData，它是ref object的类型。它被声明为object oglngEnrollData;。

错误为：

System.Runtime.InteropServices.COMException未处理HResult=-2147352571消息=Tür uyuşmazlığı。（HRESULT出现异常：0x80020005（DISP_E_TYPEMIMACH））来源=mscorlib错误代码=-2147352571StackTrace：位于System.RuntimeType.ForwardCallToInvokeMember（字符串成员名称、BindingFlags标志、对象目标、Int32[]aWrapperTypes、MessageData和msgData）在SB100BPCLib_DSB100BC.GetEnrollData（Int32 dwMachineNumber、Int32 dwEnrollNumber、Int32dwEMachineNumber、Int32-dwBackupNumber、Int32_&dwMachinePrivilege、Object&dwEnrollData、Int32&dwPassWord）在AxSB100BPCLib.AxSB100BPC.GetEnrollData（Int32 dwMachineNumber、Int32 dwEnrollNumber、Int32dwEMachineNumber、Int32-dwBackupNumber、Int32''dwMachinePrivilege、Object&dwEnrollData、Int32&dwPassWord）在enrolldata。f:''enrolldata''Form1.cs:line 196中的Form1.button_2_Click（Object sender，EventArgs e）位于System.Windows.Forms.Control.OnClick（EventArgs e）位于System.Windows.Forms.Button.OnClick（EventArgs e）在System.Windows.Forms.Button.OnMouseUp（MouseEventArgs mevent）在System.Windows.Forms.Control.WmMouseUp（消息和消息，鼠标按钮，Int32次点击）位于System.Windows.Forms.Control.WndProc（消息和m）位于System.Windows.Forms.ButtonBase.WndProc（消息和m）位于System.Windows.Forms.Button.WndProc（消息和m）位于System.Windows.Forms.Control.ControlNativeWindow.OnMessage（消息-m）位于System.Windows.Forms.Control.ControlNativeWindow.WndProc（消息-m）在System.Windows.Forms.NativeWindow.DebugableCallback（IntPtr hWnd、Int32 msg、IntPtr wparam、IntPtr lparam）位于System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW（MSG&MSG）位于System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop（IntPtr dwComponentID，Int32 reason，Int32 pvLoopData）位于System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner（Int32原因，ApplicationContext上下文）位于System.Windows.Forms.Application.ThreadContext.RunMessageLoop（Int32原因，ApplicationContext上下文）位于System.Windows.Forms.Application.Run（Form mainForm）在enrolldata。f:''enrolldata''Program.cs:line 19中的Program.Main（）位于System.AppDomain_nExecuteAssembly（RuntimeAssembly程序集，String[]参数）位于System.AppDomain.ExecuteAssembly（String assemblyFile，Evidence assemblySecurity，String[]args）位于Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly（）位于System.Threading.ThreadHelper.ThreadStart_Context（对象状态）位于System.Threading.ExecutionContext.RunInternal（ExecutionContext ExecutionContext，ContextCallback回调，对象状态，布尔值preserveSyncCtx）在System.Threading.ExecutionContext.Run（ExecutionContext ExecutionContext，ContextCallback回调，Object state，Boolean preserveSyncCtx）在System.Threading.ExecutionContext.Run（ExecutionContext ExecutionContext，ContextCallback回调，对象状态）位于System.Threading.ThreadHelper.ThreadStart（）InnerException：

任何想法都欢迎