C#

private void MoveFile()
{
    string fileName = "myFile.txt";
    FileInfo fInfo  = new FileInfo(fileName);
    fInfo.MoveTo(@"C:\"+fileName);
    MessageBox.Show("Done");
}

using (System.Drawing.Image Img = System.Drawing.Image.FromFile(System.IO.Path.GetFullPath(flUpload.PostedFile.FileName)))
                        {
                            Size ThumbNailSize = NewImageSize(Img.Height, Img.Width, 100);
                            Size ImageSize = NewImageSize(Img.Height, Img.Width, 500);

                            using (System.Drawing.Image ImgThnail = new Bitmap(Img, ThumbNailSize.Width, ThumbNailSize.Height))
                            {
                                ImgThnail.Save(ImageThumbPath, Img.RawFormat);
                                ImgThnail.Dispose();
                            }
                            using (System.Drawing.Image Img1 = new Bitmap(Img, ImageSize.Width, ImageSize.Height))
                            {
                                Img1.Save(ImagePath, Img.RawFormat);
                                Img1.Dispose();
                            }
                            Img.Dispose();
                        }