Silverlight窗体加载时让控件获得焦点

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
            //动态添加TextBox到ScrollViewer的StackPanel中
            txt = new TextBox[5];
            for (int i = 0; i < 5; i++)
            {
                txt[i] = new TextBox();
                txt[i].Width = 200;
                txt[i].Height = 30;
                txt[i].SetValue(Canvas.TopProperty, Convert.ToDouble(i * 30 + (i + 1) * 10));
                txt[i].SetValue(Canvas.LeftProperty, Convert.ToDouble(10));
                Main.Children.Add(txt[i]);
            }
            '===========让控件得到焦点的关键代码Start===========
            HtmlPage.Plugin.Focus();
            txt[0].Focus();
            '===========让控件得到焦点的关键代码End===========
        }

 

HtmlPage.Plugin.Focus();     需要引用命名空间using System.Windows.Browser;