Differences in covergae report with opencover and NCover

[aranguvalu]

Thers is a gap between opencover report and ncover report when same tests are executed against similar setup. We executed few test cases against our .NET application by copying all necessary pdb files to the application path. Execution was done by using both opencover and ncover.

While analyzing the reports we could see a significant differences in .dlls being touched upon by opencover and NCover. OpenCover execution coverd 47 dlls vs 96 dlls in NCover. The missing dlls in opencover are core components and are not third party related files.

Can you please let me know why the difference and is there any steps thats being missed in the proccess of execution?