C# The process cannot access the file ''' because it is being used by another process

Question

The snippet of code was just supposed to write a string into a text file called \"all_results.txt\". I had errors implementing in File.WriteAllText. After searching the net

Answer 1

As others have stated, opening and closing the file repeatedly might be the issue. One solution not mentioned is to keep the file open for the duration of the processing. Once complete, the file can be closed.