if (Directory.Exists(Application.StartupPath + @"\DownloadedFile\'" + DBName + "'" + '\\' + "GetUserDispute") == false)
{
DirectoryInfo directyinfo = new DirectoryInfo(Application.StartupPath + @"\DownloadedFile\'" + DBName + "'" + '\\' + "GetUserDispute");
directyinfo.Create();
}
Through DirectoryInfo Class you can create the folder in side your required path