I'm getting an error message in visual studio in C# windform app when I run these codes and I can't find it , what should I do?

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the error message says there were buid error.do you want to continue and run the last successful build

What I have tried:

I added 3 forms in the first form, I programmed a button and typed these codes "this.Hide();
 form2 frm=new form2();
frm.show(); " and in the second form I programmed another button and I typed these codes"Application.OpenForms[0].show();
this.close(); " and when I run the error message appears

Posted 30-May-22 1:28am

Killua Zoldyck 2022

Updated 30-May-22 1:56am

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CPallini 30-May-22 7:30am

Look better at the error produced, it contains full details (of your failed build).
You could also post here the complete and exact error message.

Killua Zoldyck 2022 30-May-22 8:21am

I can't find the error because before I run, it is written"no issues found "

0x01AA 30-May-22 7:32am

c# is case sensitive. So use Show() and Close()

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OriginalGriff · Answer 1 · 2022-05-30T01:56:00

0x01AA is right and has probably solved your problem, but ... you should expect to get syntax errors every day, probably many times a day while you are coding - we all do regardless of how much experience we have! Sometimes, we misspell a variable, or a keyword; sometimes we forget to close a string or a code block. Sometimes the cat walks over your keyboard and types something really weird. Sometimes we just forget how many parameters a method call needs.

We all make mistakes.

And because we all do it, we all have to fix syntax errors - and it's a lot quicker to learn how and fix them yourself than to wait for someone else to fix them for you! So invest a little time in learning how to read error messages, and how to interpret your code as written in the light of what the compiler is telling you is wrong - it really is trying to be helpful!

So read this: How to Write Code to Solve a Problem, A Beginner's Guide Part 2: Syntax Errors[^] - it should help you next time you get a compilation error!