日期:2014-05-18  浏览次数:20850 次

跨线程操作控件问题 InvokeRequired
各位高手帮忙看下以下代码,多线程跨类对控件赋值控件没有显示值呢?在同一类里面控件就能显示,帮帮忙看下问题出现在哪,程序没有报错
C# code

     
 public partial class PhotoMain : Form
    {
/开始执行
 private void button_ceshi_Click(object sender, EventArgs e)
        {
            GETI premierLeague = new GETI();
            Thread threads = new Thread(delegate() { premierLeague.sss(); });
            threads.Name = "PremierLeague";
            threadlist.Add(threads);
            threads.Start();
        }


        delegate void PhotoSta(string PhotoSum, string ImgSum, string CJ);

        /// <summary>
        /// 更新状态栏
        /// </summary>
        public void ThisKeyWords(string PhotoSum, string ImgSum, string CJ)
        {
            lock (thisLock)
            {
                try
                {
                    if (this.statusBar_Photo.InvokeRequired)
                    {

                        PhotoSta d = new PhotoSta(ThisKeyWords);
                        this.Invoke(d, new object[] { PhotoSum, ImgSum, CJ });
                    }
                    else
                    {
                        if (PhotoSum != null)
                        {
                            this.statusBar_Photo.Panels[0].Text = PhotoSum;
                        }
                        if (ImgSum != null)
                        {
                            this.statusBar_Photo.Panels[1].Text = ImgSum;
                        }

                        if (CJ != null)
                        {
                            this.statusBar_Photo.Panels[2].Text = CJ;
                           
                        }
                       
                    }
                }
                catch (Exception ex) { error.LogError("Photo更新状态栏出错:", ex); }
            }
        }

}

 public class GETI
    {
        public void sss()
        {
            PhotoMain ww = new PhotoMain();
            ww.ThisKeyWords(null, null, "显示停止!");
        }
    }






------解决方案--------------------
PhotoMain ww = new PhotoMain();

你这里不是 new 了一个新画面么?不是当前的。

把当前的 Form 传进去,更新可以。

public void sss(PhotoMain photoMain)
{
photoMain.ThisKeyWords(null, null, "显示停止!");
}
------解决方案--------------------
private void button_ceshi_Click(object sender, EventArgs e)
{
GETI premierLeague = new GETI();
Thread threads = new Thread(delegate() { premierLeague.sss(this); });
threads.Name = "PremierLeague";
threadlist.Add(threads);
threads.Start();
}