多线程调用更改控件(包含动态调用 dll)

最新推荐文章于 2021-05-20 14:22:04 发布

原创最新推荐文章于 2021-05-20 14:22:04 发布 · 544 阅读

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文章标签：

#多线程 #dll #dataset #object #thread #table

private delegate void FlushClient();
        private void button1_Click(object sender, EventArgs e)
        {
            Thread thread = new Thread(getGPS);
            thread.IsBackground = true;
            thread.Start();

}

        private void getGPS()
        {
            System.Reflection.Assembly asm = System.Reflection.Assembly.LoadFrom(System.AppDomain.CurrentDomain.BaseDirectory + " //Service.dll");
            Type tp = asm.GetType("Service");
            object obj = System.Activator.CreateInstance(tp);
            System.Reflection.MethodInfo GetVechileInfo = tp.GetMethod("GetVechileInfo");

            System.Xml.XmlNode _tmpNode = (System.Xml.XmlNode)GetVechileInfo.Invoke(obj, new object[] { "8888", "8888", "8" });
            //Service GPSws = new Service();
            //System.Xml.XmlNode _tmpNode = GPSws.GetVechileInfo("888", "888", "888");
            string a = _tmpNode.OuterXml;

DataSet ds = new DataSet();
ds.ReadXml(new System.IO.MemoryStream(System.Text.Encoding.UTF8.GetBytes(a)));

            if (this.label1.InvokeRequired)//等待异步
            {
                FlushClient fc = new FlushClient(getGPS);
                this.Invoke(fc);//通过代理调用刷新方法
            }
            else
            {
                label1.Text = ds.Tables["Table"].Rows[0]["Vehicle"].ToString() + ds.Tables["Table"].Rows[0]["GPSTime"].ToString() + ds.Tables["Table"].Rows[0]["Speed"].ToString();
            }

方法二

private SynchronizationContext CurSynContext = null; (全局变量)
private void Form1_Load(object sender, EventArgs e)
        {
           // ReadIni();
            CurSynContext = SynchronizationContext.Current;
        }
        private void myEventForCallback(object state)
        {
            label1.Text = "1234234" ;

}

        private void ThreadStar()
        {
            CurSynContext.Post(new SendOrPostCallback(myEventForCallback), null);
        }