WPF系列

一、ListView绑定数据源XML

 //前端代码
 1 <Window x:Class="ListView读取XML数据.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow"
Height="350" Width="525">
    <Window.Resources>
        <XmlDataProvider x:Key="Student" Source="Book.xml">
        </XmlDataProvider>
    </Window.Resources>
    <Grid>
        <ListView ItemsSource="{Binding Source={StaticResource Student},XPath=/Person/Information}">
        </ListView>
    </Grid>
</Window>

 //XML文件
 1 <?xml version="1.0" encoding="utf-8" ?> 
<Person>
    <Information>
      <Name>张三</Name>
      <Age>22</Age>
      <Sex>男</Sex>
    </Information>
    <Information>
      <Name>李四</Name>
      <Age>25</Age>
      <Sex>男</Sex>
    </Information>
</Person>

//效果截图

 二、保存数据到XML

            XmlDocument xml = new XmlDocument();
            string str_path = @"J:\WPF\test\XMLData.xml";
            XmlNode root = null; 
            if (File.Exists(str_path))
            {
                xml.Load(str_path);
                root = xml.SelectSingleNode("Person");
            }
            
            XmlNodeList nodelist = xml.SelectNodes("/Person/Student/Infor");
            XmlElement inf,adr, stu, info, UN, IP, DB;
            bool bl_exist = true;
            foreach (XmlNode node in nodelist)
            {
                if (node.ChildNodes[1].InnerText == (ServerName.Text + ".").ToString() &&
                    node.ChildNodes[0].InnerText == (UserName.Text + ".").ToString() && 
                    node.ChildNodes[2].InnerText ==DataName.Text)
                {
                    bl_exist = false;
                    break;
                }
            }
            if (bl_exist)
            {
                stu = xml.CreateElement("Student"); //创建元素
                info = xml.CreateElement("Infor");
                UN = xml.CreateElement("UserName");
                IP = xml.CreateElement("IP");
                DB = xml.CreateElement("DataBaseName");

                inf = xml.CreateElement("Information");
                adr = xml.CreateElement("Address");
                adr.InnerText = (UserName.Text + "." + ServerName.Text + "." + DataName.Text).ToString();
                root.AppendChild(inf);
                inf.AppendChild(adr);

                UN.InnerText = (UserName.Text + ".").ToString();
                IP.InnerText = (ServerName.Text + ".").ToString();
                DB.InnerText = DataName.Text;
                stu.AppendChild(info);
                info.AppendChild(UN);
                info.AppendChild(IP);
                info.AppendChild(DB);
                root.AppendChild(stu);
                MessageBox.Show("数据保存成功");
            }
            xml.Save(str_path);   

 三、页面切换出现淡入淡出效果和图表控件页面重新加载动画

1、把Window窗口改为NavigationWindow导航切换窗口，添加源文件Market.xaml
<NavigationWindow x:Class="MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="1080" Width="3840" WindowState="Maximized"  Source="Market.xaml" WindowStyle="None" ShowsNavigationUI="False" ResizeMode="NoResize" Navigating="NavigationWindow_Navigating" 
        MouseLeftButtonDown="NavigationWindow_MouseLeftButtonDown">
</NavigationWindow>

2、下一个页面切换的时候用以下代码就可实现：
NavigationService.Navigate(new Uri("Power.xaml", UriKind.Relative));

3、淡入淡出效果

        private void NavigationWindow_Navigating(object sender, NavigatingCancelEventArgs e)
        {
            if (Content != null && !_allowDirectNavigation)
            {
                e.Cancel = true;
                _navArgs = e;
                this.IsHitTestVisible = false;
                DoubleAnimation da = new DoubleAnimation(0.3d, new Duration(TimeSpan.FromMilliseconds(100)));
                da.Completed += FadeOutCompleted;
                this.BeginAnimation(OpacityProperty, da);
            }
            _allowDirectNavigation = false;
        }
        private void FadeOutCompleted(object sender, EventArgs e)
        {
            (sender as AnimationClock).Completed -= FadeOutCompleted;

            this.IsHitTestVisible = true;

            _allowDirectNavigation = true;
            switch (_navArgs.NavigationMode)
            {
                case NavigationMode.New:
                    if (_navArgs.Uri == null)
                    {
                        NavigationService.Navigate(_navArgs.Content);
                    }
                    else
                    {
                        NavigationService.Navigate(_navArgs.Uri);
                    }
                    break;
                case NavigationMode.Back:
                    NavigationService.GoBack();
                    break;

                case NavigationMode.Forward:
                    NavigationService.GoForward();
                    break;
                case NavigationMode.Refresh:
                    NavigationService.Refresh();
                    break;
            }

            Dispatcher.BeginInvoke(DispatcherPriority.Loaded,
                (ThreadStart)delegate()
                {
                    DoubleAnimation da = new DoubleAnimation(1.0d, new Duration(TimeSpan.FromMilliseconds(100)));
                    this.BeginAnimation(OpacityProperty, da);
                });
        }
        private bool _allowDirectNavigation = false;
        private  NavigatingCancelEventArgs _navArgs = null;