WPF 反射 排序 、启动定时器等

WPF

1. dataGrid.Items 默认选中第一行

   Dispatcher.Invoke(new Action(delegate()
                     {
                         //Utility.SelectRowByIndex(this.dataGrid,0,true);
                         dataGrid.SelectedIndex = 0;
                     }),System.Windows.Threading.DispatcherPriority.ContextIdle);
   

2. 反射 返回列 乱序问题

   PropertyInfo [] headerList = typeof(T).GetProperties().OrderBy(x => x.MetadataToken).ToArray() ;
   

3. 启动一个定时器，重置光标

   System.Timers.Timer timer = new System.Timers.Timer(300);
   timer.Elapsed += new System.Timers.ElapsedEventHandler((a,b) =>
       {
        Dispatcher.Invoke((Action)(() =>
                          {
                              dataGrid.Focus();
                              timer.Enabled = false;
                              timer.Stop();
                              timer.Dispose(); //便于GC回收
                              timer=null;
                          }));                                                     
       });
   	timer.AutoReset = false;
   	timer.Enabled = true;