How to pass values to this method?

Question

I have an dll in that class the following method

 [MethodImpl(MethodImplOptions.PreserveSig | MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
    bool SetIPAddress([MarshalAs(UnmanagedType.BStr)] ref string lpszIPAddress, int dwPortNumber, int dwPassWord);

How do I pass values to this method:

public FP_CLOCKLib._DFP_CLOCK   ff = new FP_CLOCKLib.FP_CLOCK();

reffered to create instance like "Catastrophic failure" when accessing an OCX library from C#

bool status = ff.SetIPAddress(ref ip, 5005, 0);

it threw error

System.Runtime.InteropServices.COMException (0x8000FFFF): Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData) at FP_CLOCKLib.FP_CLOCKClass.SetIPAddress(String& lpszIPAddress, Int32 dwPortNumber, Int32 dwPassWord)

Answer 1

This could be your issue, the following steps could help.

This problem is a cryptic manifestation of a known issue with URLMON.dll. KB945701 - http://support.microsoft.com/default.aspx?scid=kb;EN-US;945701

We performed the following fix which resolved the issue:

1. Click Start
2. click Run
3. type regedit
4. then click OK
5. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_IGNORE_ZONES_INITIALIZATION_FAILURE_KB945701

Note If the FEATURE_IGNORE_ZONES_INITIALIZATION_FAILURE_KB945701 subkey does not exist, you must manually create it

6. Right-click FEATURE_IGNORE_ZONES_INITIALIZATION_FAILURE_KB945701 , point to New, and then click DWORD Value
7. Type w3wp.exe to name the new registry entry
8. then press ENTER
9. Right-click w3wp.exe
10. then click Modify
11. In the Value data box
12. type 1
13. then click OK
14. Exit Registry Editor.
15. Restart the system

https://forums.iis.net/t/1148764.aspx?Catastrophic+failure+Exception+from+HRESULT+0x8000FFFF+E_UNEXPECTED+