When debugging or building, I am receiving a "no sub main" error.........

Question

Can someone please tell me what this error means and how I can fix it? To me it sounds like, vb.net wants the code that I have to be inside of some main code like how c++ does. My teacher looked at my code & she thinks it is correct; it is just for a simple form. If someone needs to see the code I can put it on here when I get access to it. Thanks, Joe

Answer 1

To fix this problem go to project properties and select whether the projects starts from Sub Main or it starts from Form. It looks like, you don't have Sub Main and your project needs to start from Form. So, it's nothing to do with the code itself.

Answer 2

It has probably happened because you renamed the form in the project so the compiler does not know which object to start with. This can be changed by clicking project and clicking the "project" properties. Under the general option you can specify the start up object set this to the new form name and bing you don’t have to have a sub main. Cheers, Si

Answer 3

In VB.NET if you don't specify a starting form then it is assumed that you'll have a module with the "Sub Main" routine as your start. Hence, when you compliled the code, VB.NET couldn't find Sub Main thus it returned the "no sub main" error. When you specified a "Sub Main" routine, all that you had to do was to create an object to the starting form and show it. ex: Sub Main dim frm as new Form1 frm.Show end sub

Answer 4

I fixed the problem but don't know exactly how. I coded in sub main() like it said I was missing & then I got more errors, so I deleted it. I tried to build the app after deleting sub main() & got a different error about sub main; something about inheriting. I double clicked that error & it gave me some inheriting option, so I let vb automatically do the change. After that I built it & it worked. I guess it has the ability to fix some code itself or maybe an expert programmer ghost fixed it for me.