akaksohot

Below image is my code snip, 

Hi Countryen, Very thanks for your quick reply. SharpShell functions are very great. My ShareShell is 2.7.2.0, window version is win10. What i want to do is to make all...

Below is the images.  

Below is my code. ---------------------------------------- ```` using System.Runtime.InteropServices; using System.Windows.Forms; using SharpShell.Attributes; using SharpShell.SharpPreviewHandler; namespace AbcPreviewHandler { /// /// The Abc Preview Handler is a preview handler that shows a...

hi Countryen, Thanks for your response. Confirm that if you mean i can not use the Case 2 code above to implement override all files which include system file '.cs'...

will try later. But if have more file type have system preview content, i have to add more attribute for these files? I think this is not convenient for me.

will try later. But if have more file type have system preview content, i have to add more attribute for these files? I think this is not convenient for me.

how to search the registry, using what key word or how to search? could you please give some advise on this? Thanks in advance again for your help and response.

Will try the combin attributes above and the search registry approach that you approvided later, then will update the result here. Thanks a lot for your help.

I have tried to combin Case 1 and Case 2 attributes, but not works, only Case 1 will works, Case 2 will not work it means case 2 do not...