Develop Reference

Everything in the form disappeared

I have created an Windows Form. I have worked very hard on it. I inserted a bunifu button and the deleted it via Form.Designer.cs. The form and it's border still appears (I set border to none) !(https://imgur.com/AWltgCp)
It doesn't work at all.

There isn't a ton of info here. If the project is still open you could try to ctrl-Z your way back. Hopefully you are using some sort of version control. If so you could utilize that. Otherwise I believe we will need to see more code.

This is a problem that happens to me, quite often. But it depends on the code. So, first of all, post your code so we can see it and tell what is the problem. Now, by guessing, possible solutions:
Check your design code. See if you removed anything by accident. If yes try doing it the right way.
Try cleaning and rebuilding your project. Sometimes files can get corrupted and that can help.
Try pressing Ctrl+Z to undo and see if it does something. As #alphamalle said, you should have been using a kind of version control(git, etc.) so you could easily go back to your previous revision.
If all of these don't work, then sadly we can't tell. Please post your code, because the project could have been permanently deleted. Good lesson to use version control.

Visual Studio 2015 C# when typing it keeps going gray?

Whenever I attempt to write in VisualStudio2015 this occurs, where when I try to write, it works out fine for 1-3seconds, then the line I write on goes gray. It does not matter where I position my mouse, I tried with another keyboard to check if any keys were stuck, did not help.
This issue started to occur when I upgraded my PC to Windows 10. Tried several restarts etc.
Please help. This really gets annoying when trying to code :/
I am very bad at explaining my issue here, so please watch this gif to understand. Basically whenever I try to write, that line I am on grays out, leaving me unable to do so: https://gyazo.com/688a5660b29a3d93c0bb426715bcf038
Issue shown

After almost a month I found out the issue was that my CS:GO was opened meanwhile, and it somehow interferes with my Visual Studio and other programs. Thanks for your help though.

how to stop“build must be stopped before the solution can be closed”

The "Build" menu appears as it would if the solution were building, but the Cancel Build (Ctrl+Break) menu item has no effect.
Trying to close the application prompted as:
The build must be stopped before the solution can be closed.
Can anyone help me to resolve this problem?

Do this, look for msbuild process(es) and kill them before devenv. And make sure vbc really has gone too....
For any further crashes that occur frequently submit them to microsoft so that they can fix the bug...
Hoping it helped....

I was having this problem and I think I discovered why.
I was drawing way outside the boundaries of a bitmap and it was overwriting some memory location that affected Visual Studio.
I added a line of code as a safety while testing that looked for when writing bitmap.Top < 0 or writing > bitmap.Width or > bitmap.Height.
This is supposed to be trapped by Visual Studio but I think it's getting by.
In straight C it's called a wild pointer.

Difference between runtime and debug

I have a very odd problem. I've written a little inhouse app which scrapes a load of URLs, performs HEAD requests to get the size and populate a ListView control. Everything works fine when I am running it inside Visual Studio when debugging, but when I deploy the listview does not populate. The 2 are making exactly the same calls consistently. Does anyone have any idea what may cause this to happen?

Thanks I was able to find the solution by attaching the debugger to the process... many thanks to all for answering. I know this is a trivial question...
Many thanks
JT

I make changes to a form in design mode but when the program is built the changes are not there?

I am designing a basic app with multiple forms I seem to be coming across this problem and it will probably be something stupid.
When I make a change to my main form in design mode (like add a button), the button appears in design mode and I can code it but when I build the program it doesn't show up.
Any ideas?

Clean and Rebuild
Make sure you're you're starting a correct form in Application.Run in Program.cs
Most Important of all ..
Save your changes !

And make sure that the build compiles (it might not compile and not ask you if you want it to run the last successful build).

Check out what Microsoft themselves say:
http://vidmar.net/weblog/archive/2005/02/04/999.aspx

The problem was resolved. Just go to taskbar> build >clean rebuild.

Some questions:
If you change the code-behind, does the debugger stop on a breakpoint you put on that change? Also, declare a dummy variable and check if it is visible through the debugger windows such as "Locals", "Autos", "Watch" or "Immediate"?
Did you tamper with Form's default constructor (add parameters, change visibility, that sort of things)?
The form you are changing - are you positive that it is actually a main form (check the Program.Main)?
Does your form include user controls?
Did you try restarting the Visual Studio?
Did you try a full rebuild?
Did you try manually deleting all bin/obj folders then rebuilding?
Is your project actually selected for building under current configuration/platform (investigate the Build check-box under Configuration Manager)?
Did the project successfully build (check the error log)?
Are you running the same configuration/platform that you are building? Are you running the same project that you are building?
Ensure the right project is bold in the Solution Manager or check the start-up project in Solution Manager.
Do you happen to use "Start external program" under debugging options?
OK, this is not exactly an "answer", but answering these questions may produce some clues as to where is the actual problem...