Question

I have a problem with copying from local disk to flash. The code worked before, but after I create anoteher foreach loop and I had to create new objects, the File.Copy functionality isn’t working anymore.
In value File | System.IO.File there are values like: Error_Access_Denied | 5, Error_Invalid Parameter| 87, GetFileExInfoStandard | 0.

edit: locationUSB present file path on flash. (locationUSB == “D:\something.hex”) and x._location == “C:\something_1.hex” .

foreach (object item in this.dataGridView2.Rows)
{
    versionOnDisk = this.VersionInt(x._version);
    versionOnFlash = this.VersionInt(((DataGridViewRow)item).Cells[2].Value.ToString());

    if (versionOnFlash > versionOnDisk)
        forbidCopying = true;
    else
        locationUSB = _logicalDrive + ((DataGridViewRow)item).Cells["Filename"].Value.ToString();  // <-- location value (because of the foreach)

    if (!forbidCopying)
        File.Copy(x._location, locationUSB, true);   // <--
    else if (AllowDelete.Checked)
        File.Delete(locationUSB);
}

edit:
If I change the location into logical drive path, which value is “D:\” I get the DirectoryNotFoundException was unhandled: Could not find a part of the path ‘D:\’.

Answer 1

Most probably after creating new files, you are not closing the FileStreams. Close the FileStreams of the newly created files using either myFile.Close(); or create new files inside using (var myFile = File.Create(myPath)) blocks.