AsynchronousLoading

 

 

Class

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

 

namespace rEHRGrowthChart

{

    public static class AsynchronousLoading

    {

        public delegate object AsyncInvokeHandler();

        public delegate void AsyncInvokeCallbackHandler(object result, Exception e);

 

        public static void AsyncInvoke(AsyncInvokeHandler handler, AsyncInvokeCallbackHandler callback)

        {

            System.Threading.Thread t = new System.Threading.Thread(() =>

            {

                try

                {

                    callback(handler(), null);

                }

                catch (Exception e)

                {

                    GrowthChartLog.LogInfo(e.Message);

                    callback(null, e);

                }

            });

            t.IsBackground = true;

            t.Start();

        }

 

    }

}

 

 

 

 

How to use it?

 

private void Window_Loaded(object sender, RoutedEventArgs e)

        {

            AsynchronousLoading.AsyncInvoke(() =>

            {

                #region

 

                //Data.IUseCaseAction useCaseAction = App.ActionFactory.CreateUseCaseAction();

                //IList<TurfUseCaseFolder> useCaseFolderList = useCaseAction.RetrieveUseCaseFolders(new TurfUseCaseFolder() { Parent = null });

                //return useCaseFolderList;

 

                return null;

 

                #endregion

 

            }, (result, ex) =>

            {

                if (ex != null)

                {

                    GrowthChartLog.LogInfo(ex.Message);

                    Dispatcher.Invoke(new System.Threading.ThreadStart(() =>

                    {

                        MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);

                        return;

                   }));

                }

                //IList<TurfUseCaseFolder> useCaseFolderList = (IList<TurfUseCaseFolder>)result;

                Dispatcher.Invoke(new System.Threading.ThreadStart(() =>

                {

                    //UseCaseList.ItemsSource = useCaseFolderList;

                    //string[] ruleList = new string[]

                    //{

                    //    Constant.RuleName_ProductName,

                    //    Constant.RuleName_ProjectName,

                    //    Constant.RuleName_FolerName,

                    //    Constant.RuleName_CreatorInitial,

                    //    Constant.RuleName_Time,

                    //    Constant.RuleName_Type,

                    //    Constant.RuleName_FileCount

                   //};

                    //ImageRulesList.ItemsSource = ruleList;

                    //VedioRulesList.ItemsSource = ruleList;

                    //ProblemRulesList.ItemsSource = ruleList;

                }));

            });

        }