System.AppDomain.SetData C# (CSharp) Method

        public void SetData(string name, object data) => AppContext.SetData(name, data);

        private void simpleButton1_Click(object sender, EventArgs e)
        {
            OpenFileDialog configform = new OpenFileDialog();
            configform.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
            configform.Filter = "程序集文件(*.dll,*.exe)|*.dll;*.exe";
            configform.FilterIndex = 1;
            configform.RestoreDirectory = true;
            if (configform.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    if (currentDomain != null)
                        AppDomain.Unload(currentDomain);
                    currentDomain = AppDomain.CreateDomain("temp");
                    string configfile = configform.FileName + ".config";
                    string filedic = Path.GetDirectoryName(configform.FileName);
                    var m = typeof(AppDomainSetup).GetMethod("UpdateContextProperty", BindingFlags.NonPublic | BindingFlags.Static);
                    var funsion = typeof(AppDomain).GetMethod("GetFusionContext", BindingFlags.NonPublic | BindingFlags.Instance);
                    if(File.Exists(configfile))
                        currentDomain.SetData("APP_CONFIG_FILE", configfile);
                    var test = currentDomain.SetupInformation;
                    exDataAccess = (ExDataAccess)currentDomain.CreateInstanceAndUnwrap(typeof(ExDataAccess).Assembly.FullName, typeof(ExDataAccess).FullName);
                    currentDomain.SetData("APPBASE", filedic);
                    m.Invoke(null, new object[] { funsion.Invoke(currentDomain, null), "APPBASE", filedic });
                    this.textEdit1.Text = configform.FileName;
                    var results = exDataAccess.FindAttributes(configform.FileName);
                    if (results.Count > 0)
                    {
                        this.treeList1.ClearNodes();
                        foreach (var result in results)
                        {
                            this.treeList1.Nodes.Add(result[0], result[1], result[2]);
                        }
                    }

                    currentDomain.SetupInformation.ConfigurationFile =configform.FileName+".config";
                }
                catch(Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }