using System.IO;
string srcFile = @"C:\Users\Anne\results.trx";
string destFile = @"C:\Users\Anne\results.trx2";
System.IO.File.Move(srcFile, destFile);
Why is the System.IO.File reference not recognized?
using System.IO;
string srcFile = @"C:\Users\Anne\results.trx";
string destFile = @"C:\Users\Anne\results.trx2";
System.IO.File.Move(srcFile, destFile);
Why is the System.IO.File reference not recognized?
Your code execute just fine, the issue lies elsewhere and you'll need to provide more details of your project's setup.
Remember to try restarting etc. as well.