Clearing content of text file using C#

File.WriteAllText(path, String.Empty);

Alternatively,

File.Create(path).Close();

Just open the file with the FileMode.Truncate flag, then close it:

using (var fs = new FileStream(@"C:\path\to\file", FileMode.Truncate))
{
}

 using (FileStream fs = File.Create(path))
 {

 }

Will create or overwrite a file.

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