How to rename a file when it is already exist in a folder ?

Question

Hi, In desktop application i saving the images in folders but when i save the images second time it will overwrite. so i want to save the same images in folder with rename like Picture(1).jpg.

so please help me how can i do this.

i tried the following code but images with numbers are not incremented.

string folderPath1 = "E:\\CoachingClassImages\\HeaderInfoImages\\Logo\\";
                if (!Directory.Exists(folderPath1))
                {
                    Directory.CreateDirectory(folderPath1);
                }


                //Save the file in folder
                int count = 1;
                string file = "E:\\CoachingClassImages\\HeaderInfoImages\\Logo\\" + logo_picname;
                string filename = Path.GetFileNameWithoutExtension(logo_location);
                string extention = Path.GetExtension(filename);
                string fileLocation1 = file;
                if (File.Exists(file))
                {
                    System.GC.Collect();
                    System.GC.WaitForPendingFinalizers();

                    string tempFileName = string.Format("{0}({1}){2}", filename, count++, extention);

                    File.Copy(fileLocation1, Path.Combine("E:\\CoachingClassImages\\HeaderInfoImages\\Logo\\", Path.GetFileName(tempFileName)), true);
                }
                else
                {
                    File.Copy(fileLocation1, Path.Combine("E:\\CoachingClassImages\\HeaderInfoImages\\Logo\\", Path.GetFileName(filename)), true);
                }