In a fresh project, I create a form called FormMain (or any other form, it doesn't matter). This creates the FormMain.cs and a FormMain.Designer.cs. The program builds and launches just fine at this point.
But when I make any change on the GUI Designer (like changing the Form property or adding a MenuStrip from the toolbox) I see that a FormMain.resx is also created and with it, a FormMain1.Designer.cs.
It is then, I get an error
Error CS0111 Type 'FormMain' already defines a member called '.ctor' with the same parameter types
I realized that this is due to the creation of a second constructor under the partial FormMain class, in the newly generated FormMain1.Designer.cs that conflicts with the one in FormMain.cs.
If I delete the constructor in the FormMain1.Designer.cs, the project builds and runs fine. But if I make further changes on the form, the constructor gets created again in FormMain1.Designer.cs and the error repeats. I need the constructor in FormMain.cs and don't want to delete that.
So basically, I can't make changes on the form without deleting the 2nd constructor every time I make a change on the GUI editor. Is this a bug in Visual Studio 2017 (15.9.14)? If it is, any known fix?
Fixed the issue by removing Extended Strongly Typed Resource Generator from Visual Studio. This stops the FormMain1.Designer.cs from being created everytime the form is edited.