WPF使用多线程更新UI界面 涉及资源访问需要使用委托处理

界面控件定义：

 

 <Image   VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Name="ImgCard2"> </Image>

 

 

线程中调用的方法：

  

protected void SetCardInfo(PersonMod personObj)  {            try            {             string imagePath = @personObj.ImageUrl;            object[] dd = { imagePath };                            getImgCardHandler = new GetImgCard(ChangeImg);            this.ImgCard2.Dispatcher.Invoke(getImgCardHandler, dd);            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            } }

委托定义：

 

 private delegate void GetImgCard(string imgurl);        GetImgCard getImgCardHandler;        private object lockimg=new object();

 

赋值：

 

private void ChangeImg(string imgurl)        {            lock (lockimg)            {                BitmapImage images = new BitmapImage(new Uri(imgurl, UriKind.Absolute));                ImgCard2.Source = images;            }        }