I am in the process of getting everything I need to start learning C# and I've run into an issue. I am trying to use VS code as my editor but the IntelliSense isn't working. I think it's because OmniSharp cannot start up. When it tries to it run into this error: System.BadImageFormatException. I'm doing this on a brand new project, literally, all I've done is run the command dotnet new console and then OmniSharp cannot open. If it's relevant I'm using Mac and have the latest updates installed. Any idea what's causing this error and how I can fix it?
Thank you for any and all help!
Ok, so after some trial and error I realized I was using the wrong sdk. So, if anyone else is having this problem make sure you have the right one! I ended up needing the Arm one and not the normal one.
I'm running my .NET 4.0 (C#) project in debug mode after I start VS2013. It runs just fine.
The second time I start it from VS, I get the Dialog box that says "Error while trying to run project: Unable to start program C:\path\to\file.exe"
The process is still alive in the Taskmanager when I dismiss the dialog box.
From Windows Explorer, I can run the program just fine. And after closing it, the process is gone too from the Task Manager.
A rebuild doesn't help.
Is this a common problem with a known solution?
I had an issue similar to this and I had to clear the component cache instruction can be found Here.
Hope this helps.
For my case, it cause by Platform target, you could force choose it to x86 or x64 which your project is:
Each Project's Properties > Build > Platform target
As I pointed out also here, the only solution that worked for me was to disable the ConEmu integration:
ConEmu → Settings → Integration → Default term → disable Force ConEmu as default terminal for console applications
Some users reported that it was enough for them to disable the Aggressive mode in that same settings tab; that wasn't the case for me though.
The topic is old, but this might help someone else.
So in my case I made a file in Visual Studio with .cp extension (accidentally deleted the last 'p') this made visual studio just "include" the the file and not mark it as a compilation unit, thus not compiling it, I looked the *.vcxproj file in a text editor and found out about this, so if you open the project file in a notepad or something just find your file at the bottom usually and change from <Item .../> to <ClCompile .../>
I was getting similar errors. I just had to restart visual studio. Sometime couple times a day.
I had a similar error and resolved it by cleaning the solution. Right-click the solution name in Solution Explorer and choose Clean Solution.
I found a solution here:
Please check "Use Managed Compatibility Mode" under Tools|->Options->Debugging->General.
I'm Brazilian, I don't speak English very well. I did this translation on google translator.
I know the topic is old, but it can still help someone.
I had this same problem in the following situation, I have a dual boot computer (linux debian 11 and windows 10). Inside debian, on my NTFS D disk, I created a folder to perform programming tests. After accessing that same folder with windows, I created a new project in visual studio inside that same folder that I had created in linux. The creation of the project went without problems, however when I tried to run the project (F5), I received the same error from this topic. I tried all the solutions I found on the internet, and nothing worked. I gave all permissions to my admin user and it still didn't work. Then I realized that even going straight to the folder where the application's executable was and clicking directly on it, I still received the access denied error message. So, I took the project out of the folder I had created in linux, and it worked. So, what I could conclude, is that because the folder where my project was was created in linux, for some reason, my windows didn't trust this folder, so it didn't allow running executables from inside that folder, even this one executable having been created by visual studio from within windows.
Just simply create a folder name as "projects" in c drive and copy paste the newly created project in it. Run the project by doing clean & Build or Rebuild method . It will work
open the folder which contains the solution in visual studio.
again, open your *.sln file by double clicking it inside the solution explore once opened try running the solution or rebuild the solution. once rebuild gets completed, it will open without error from next time.
My way of solving the error : error while trying to load project : Unable to start program and c:\Path\to\file.exe was simply by
First restart Visual Studio
Click the build icon
Select the rebuild option
Run the Program or Debug the Program
This was a weird one. Going to put what happened to me here because it might happen to someone else. Everything was fine with the app until suddenly after some fairly insignificant code changes I suddenly started getting this error. Visual Studio was compiling the executable just fine. But, the moment I tried to run it (either from Visual Studio or directly) the executable file would be automatically deleted right out of the Debug folder. Super odd--never seen anything like it. I began to get suspicious that perhaps an anti-virus or the OS was somehow identifying a checksum or some signature in the executable as "dangerous". Or perhaps some obscure compilation bug was corrupting the executable. So on a hunch I made another innocuous change (added a couple of lines of code to color code some text in a rich text box) and the problem went away.
Un Unity3d, I am having an issue where changes to Code (C#, Monodevelop) is not picked up, until I reload the Project or Reimport all assets.
The (Intermittent) problem seems to start when I write something with a compile time error. After that point, any changes to the file are ignored (the old error still appears when you try to Build again). Even commenting out the line, or adding other errors on purpose.
It seems to happen once or twice an hour.
Unity 5.5.0f3 64 bit on Mac.
Does anyone know a fix?
Can anyone suggest next steps to debug the compilation process?
I had this, upgrading to 5.5.1 once released fixes the problem.
After fighting for quite some hours now, I think it's time to ask for some help. I'm quite new on C# development and Visual Studio environment so maybe it's something really stupid I have missed. I also searched for some answers and try some solutions (install SDK, change some thing on VS) but nothing helped. Anyway here is the problem...
I developed a small WPF application that is working great in Visual Studio. No errors, nothing. Compilation? Same. No error. Publishing? No error. When I try to launch the .exe file generated... Well nothing happens. I see my mouse cursor with the waiting cursor. The exe file is visible in my task manager and stay there until I restart my computer. When I try to kill it using the task manager, I have an error saying that I can't. When I try by using taskkill command line, it says the process does not exist...
As I expected something wrong with my app, I just created a blank WPF app, saved it and built it. So we can't make easier. And same problem. So I guess the problem is coming from some configuration in Visual Studio or something like that...
If anybody has an idea or some tips to debug the compiled app (there must be some error thrown somewhere I guess) I'll be so grateful.
Regards.
Edit
Some notes:
Even the simple WPF application that only displays an empty WPF form has the problem.
Output Type is "Windows Application"
I try to use the compiled app on the same machine as I developed it.
I've got a problem with my windows form application.
I wrote a simple program that can create .VTF / .VMT files out of .TGA files and can generate a .QC file and also compile this all with a .SMD file into a prop for the sourceSDK (Hammer Editor). So i can use this to bypass the incredible annoying task with compiling custom models for a map in Counter Strike.
Previously i could compile my form (same with other applications) and send it to someone so he can use it. This time it compiles normal and works fine on my system, but after i sent it to my friend it didn't start. He clicked at the .exe and his explorer.exe froze. After some time his explorer came back but he couldn't move or delete the file.
He also tried to restart his system, but afterward it still refuses to delete the file and then bluescreen. (The bluescreen said something about an Errorcode = 0xc000021a)
An other friend tried to start the .exe too, but he got the same problem with the explorer ...
I use Visual Studio 2015 to write and compile my code. My target Framework is .Net 4.5.2.
Does someone know how to solve this problem?
What further information do you need?
Thank you for your help
Greetings
Marv
EDIT #1: I think the bluescreen isn't that important for that problem.
We tried it again with serveral .NET Versions and it won't work at all.
The funny thing is that i sent him the whole Visual Studio project and told him to compile it on his system. The debug version in Visual Studio works fine but if he wants to start the release.exe in the subfolder /bin/release/ the same problem occurs..
Ok, i found the solution to this problem with some help from here:
C# exe not starting on Win7 build computer
and here:
Executing the Visual Studio created *.exe does not open a window and the process can not be terminated
He only has to turn off his avast antivirus...
EDIT #1: I found out that disabling the "Deepscreen" feature in Avast is enough to solve this problem.
Thank you for your help