/// <summary>
        /// Load adapters assemblies located in the given directory.
        /// </summary>
        public static Assembly[] LoadAdapters(string path)
        {
            ArrayList assemblies = new ArrayList();

            if (Directory.Exists(path))
            {
                foreach (string file in Directory.GetFiles(path, "*.dll"))
                {
                    try
                    {
                        Assembly assembly = Assembly.LoadFrom(file);
                        ChartAdapterAttribute adapterAttibute = (ChartAdapterAttribute)Attribute.GetCustomAttribute(assembly, typeof(ChartAdapterAttribute));
                        if (adapterAttibute != null)
                        {
                            assemblies.Add(assembly);
                        }
                    }
                    catch (Exception)                   // ex)
                    {
                        //System.Windows.Forms.MessageBox.Show("LoadAdapters"+ex.Message);
                    }
                }
            }

            return((Assembly[])assemblies.ToArray(typeof(Assembly)));
        }
        /// <summary>
        /// Load adapters assemblies by names
        /// </summary>
        public static Assembly[] LoadAdapters(string[] assemblyNames)
        {
            ArrayList assemblies = new ArrayList();

            foreach (string file in assemblyNames)
            {
                try
                {
                    Assembly assembly = Assembly.LoadWithPartialName(file);
                    ChartAdapterAttribute adapterAttibute = (ChartAdapterAttribute)Attribute.GetCustomAttribute(assembly, typeof(ChartAdapterAttribute));
                    if (adapterAttibute != null)
                    {
                        assemblies.Add(assembly);
                    }
                }
                catch (Exception)               // ex)
                {
                    //System.Windows.Forms.MessageBox.Show("LoadAdapters"+ex.Message);
                }
            }
            return((Assembly[])assemblies.ToArray(typeof(Assembly)));
        }