Hi all,
I use visual studio 2008(vb.net) and want to create excel.
I see some of post say steps. Go to Compile tab and click the "Register for COM interop" checkbox.
But i don't know why this checkbox visible , then i can't to click.
And i already click the "Make assembly COM-Visible".

1.And then i want to ask "Make assembly COM-Visible" (if use COM i must to click)?
2.click "Make assembly COM-Visible" only use to generate .tlb file?
3.Signing the assembly use to what?

Thank you ...