Getting system.runtime.interopservices.comexception when using 'tdconnection qctd = new tdconnection()'. Any help in fixing this is appreciated.

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Getting System.Runtime.InteropServices.COMException when using
'TDConnection qctd = new TDConnection()'.
Any help in fixing this is appreciated.

What I have tried:

Getting System.Runtime.InteropServices.COMException when using
'TDConnection qctd = new TDConnection()'.
Any help in fixing this is appreciated.

Posted 7-May-20 22:29pm

Member 14824395

Updated 8-May-20 3:19am

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Richard MacCutchan 8-May-20 4:46am

What exception?

Member 14824395 8-May-20 8:41am

Hello,

I am getting
System.Runtime.InteropServices.COMException:'Retrieving the COM class factory for
component with CLSID {C5CBD7B2-490C-45F5-8C40-B8C3D108E6D7} failed due to the following error:80040154 Class not registered (Exception from HRESULT:0x80040154(REGDB_E_CLASSNOTREG)}

Thank you.
Suneel.

Richard MacCutchan 8-May-20 8:50am

You need to check that you have registered the component correctly.

Member 14824395 8-May-20 8:53am

How to check that it is registered correctly?

Richard MacCutchan 8-May-20 9:12am

I assume you installed this product so you should be able to check that it was installed correctly. Otherwise look in the registry at the HKEY_CLASSES_ROOT\CLSID node for that GUID.

MadMyche 8-May-20 7:07am

Does the COM dll match the "bitness" of your solution (eg 32 bit)?

Member 14824395 8-May-20 8:52am

Hi,

COM dll is 32 bit and my solution is 64 bit. Could you please let me know is it an issue? If Yes,please let me know how to fix it.

Thanks,
Suneel.

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MadMyche · Accepted Answer · 2020-05-08T03:19:00

Solution 1

Comment:
Hi,
COM dll is 32 bit and my solution is 64 bit. Could you please let me know is it an issue? If Yes,please let me know how to fix it.

The easiest way to do this would be to make your application 32 bit.
An alternative if you had access to the source code would be to recompile into a 64 bit version

Comment:
Hello,
I am getting
System.Runtime.InteropServices.COMException:'Retrieving the COM class factory for
component with CLSID {C5CBD7B2-490C-45F5-8C40-B8C3D108E6D7} failed due to the following error:80040154 Class not registered (Exception from HRESULT:0x80040154(REGDB_E_CLASSNOTREG)}

The registration of COM components basically means that references are added to a list within the Windows Registry.

There are separate lists for 32 bit and 64 bit COM objects. When you install and register a 32 bit DLL it will go into the 32 bit list.
When a 64 bit application looks for COM objects, it will look in the 64 bit list.
Hence... the error.
As previously stated, the best choices are to either use a 64 bit version of the DLL or make your application 32 bit.

There are some hacks out there on copying the registry entries... which may be fine locally but can be a nightmare if this application has to be deployed on several machines

Posted 8-May-20 3:19am

MadMyche

Comments

Member 14824395 8-May-20 10:33am

Thank you for the explanation. Could you please let me know how to make my application as 32 bit?

MadMyche 8-May-20 10:58am

This is a setting in the IDE that you are using to develop your application.
MS Docs => How to: Configure projects to target platforms[^]

Member 14824395 12-May-20 3:03am

Hi,

I did make my application as 32 bit and ran. Now I am getting below error in the log. Could you please help?

Name Value
Connected The function evaluation requires all threads to run.
TestSetFactory The function evaluation requires all threads to run.

Thank you.

Member 14824395 12-May-20 3:03am

Hi,

I did make my application as 32 bit and ran. Now I am getting below error in the log. Could you please help?

Name Value
Connected The function evaluation requires all threads to run.
TestSetFactory The function evaluation requires all threads to run.

Thank you.

MadMyche 12-May-20 7:49am

A quick search of google found these articles which may help
MSDN Forum: The function evaluation requires all threads to run[^]
MS Docs: Why do we get “The function evaluation requires all threads to run”[^]

Member 14824395 15-May-20 4:02am

Hi,

Thank you for your support to address my issues. Now all issues are fixed except one.

While executing 'filter["CY_FOLDER_ID"] = "\"" +testFoldername + "\"";' statement ,it is giving me an error
'Root\Path' is not a valid integer value.
Could you please let me know how to fix it?

Code:
-----

if (qctd.Connected)
{
TestSetFactory testSetFactory = (TestSetFactory)qctd.TestSetFactory;
TDFilter filter = (TDFilter)testSetFactory.Filter;
string[] testCasesFolderNames = testSetFolderPath.Split(';');
foreach (string testFoldername in testCasesFolderNames)
{
if (testFoldername!=null)
{
filter["CY_FOLDER_ID"] = "\"" +testFoldername + "\"";

MadMyche 15-May-20 6:34am

It looks like filter["CY_FOLDER_ID"] is an integer representing the FolderID, and not the path to the folder.