File.Move only复制文件

Question

I've an application which after generate a file, tries to move it from a network location to a local folder using the File.Move function .

File.Move(_backupSource + @"\" + filename, _backupDestination + @"\" + filename);

_backupSource is the network location and _backupDestintation is the local folder.

The file is copied to the destination location, from a few days is not deleting the file on the Source, like if I used File.Copy, but this aplication was working fine for two months now.

I also looked at the event viewer from the two servers and no exception was generated.

¿What could happen?

EDIT: One thing that could be important. This app is triggered by the task scheduler every night. If I run the aplication manually, the file is moved (not copied)

EDIT 2: Now I've tried to copy the file and then delete the file using the following method

private static void MoveFiles(string filename)
{
    FileInfo file = new FileInfo(_backupSource + @"\" + filename);

    FileStream stream = null;

    int iteration = 0;

    file.CopyTo(_backupDestination + @"\" + filename);

    bool isUnlocked = false;
    while (!isUnlocked)
    {
        iteration++;
        try
        {
            stream = file.Open(FileMode.Open, FileAccess.ReadWrite, FileShare.None);
            isUnlocked = true;
        }
        catch (IOException ex)
        {
            //the file is unavailable because it is:
            //still being written to
            //or being processed by another thread
            //or does not exist (has already been processed)
            Thread.Sleep(60 * 1000);
            if (iteration > 60)
                throw ex;
            else
                EventLog.WriteEntry("DailyRestore", string.Format("Move File. Iteration number {0}", filename), EventLogEntryType.Information);

        }
        finally
        {
            if (stream != null)
                stream.Close();
        }
    }


    file.Delete();
}

In the log can see the app was trying by an hour each minute and the file is always "using by another process". Like I mention, this is when the exe is executed by the scheduler task, if I run the task that execute the exe manually (right click and execute), all the operations are successfully ended.

Answer 1

Try to run application as administrator by create command file to run the application as administrator instead of calling the application

1. Create new text file "start.cmd"
2. Open the file as a text and Write the command runas.exe /savecred /user:YourUser "YourAppFullPath"
3. Now Run "start.cmd" once to enter the user password. it will be saved until the user change it
4. Then you can call "start.cmd" instead of calling your application