WPF绑定各种数据源之xml数据源

Posted 2020-09-27 嘟嘟他爸

一、WPF绑定各种数据源索引

WPF 绑定各种数据源之Datatable

WPF绑定各种数据源之object数据源

WPF绑定各种数据源之xml数据源

WPF绑定各种数据源之元素控件属性

Binding的基础可参考WPF 绑定基础

 

二、WPF绑定各种数据源之xml数据源，此时的XML源写在界面了，当然也可以独立成文件。

<Window.Resources>        <Con:BackgroundConverter x:Key="BackgroundConverter"/>        <XmlDataProvider x:Key="myPerson3">            <x:XData>                <PersonF xmlns="">                    <person Name="Person1">                        <ID>1</ID>                        <Name>XiaoA</Name>                        <Age>49</Age>                    </person>                    <person Name="Person2">                        <ID>2</ID>                        <Name>XiaoB</Name>                        <Age>29</Age>                    </person>                    <person Name="Person3">                        <ID>3</ID>                        <Name>XiaoC</Name>                        <Age>103</Age>                    </person>                    <person Name="Person4">                        <ID>4</ID>                        <Name>XiaoD</Name>                        <Age>59</Age>                    </person>                </PersonF>            </x:XData>        </XmlDataProvider>    </Window.Resources>

　　下面是绑定的代码。此时需要注意，原来用Path改成了XPath，因为这是XML源，并且ItemsSource 改成 ItemsSource="{Binding Source={StaticResource myPerson3},XPath=/PersonF/person}"

<ListView Height="262" Margin="0,32,56,0" ItemsSource="{Binding Source={StaticResource myPerson3},XPath=/PersonF/person}" VerticalAlignment="Top"  Name="listView3" HorizontalAlignment="Right" Width="310">       <ListView.View>           <GridView>               <GridViewColumn Header="编号" DisplayMemberBinding="{Binding XPath=ID}"  Width="100" />               <GridViewColumn Header="姓名" DisplayMemberBinding="{Binding XPath=Name}" Width="100"/>               <GridViewColumn Header="年龄" Width="100">                   <GridViewColumn.CellTemplate>                       <DataTemplate>                           <TextBlock Grid.Column="1" Text="{Binding XPath=Age}" Foreground="{Binding XPath=Age, Converter={StaticResource BackgroundConverter}}"/>                       </DataTemplate>                   </GridViewColumn.CellTemplate>               </GridViewColumn>           </GridView>       </ListView.View>   </ListView>

　　下面是值转换

public class BackgroundConverter : IValueConverter    {        #region IValueConverter Members          public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)        {            Color color = new Color();            int num = int.Parse(value.ToString());            if (num > 100)                color = Colors.Yellow;            else if (num < 50)                color = Colors.LightGreen;            else                color = Colors.LightPink;            return new SolidColorBrush(color);        }          public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)        {            throw new NotImplementedException();        }          #endregion    }

　　效果图：

 

2.使用外部XML数据源，只需做如下修改

<Window.Resources>        <XmlDataProvider x:Key="myPerson3" Source="/Person.xml"/>   </Window.Resources>

3.如果使用外部XML数据源，并且采用C#代码的形式，则如下：

XmlDocument doc = new XmlDocument();  doc.Load(@"http://www.cnblogs.com/XMLFile1.xml");  XmlDataProvider provider = new XmlDataProvider();  provider.Document = doc;  provider.XPath = @"/PersonF/person";    listView3.DataContext = provider;  listView3.SetBinding(ListView.ItemsSourceProperty, new Binding());

 当然也可以使用XMLDataProvider的Source属性，此时只需做如下修改：

XmlDataProvider provider = new XmlDataProvider(); provider.Source = new Uri(@"F:\\\\XMLFile1.xml"); provider.XPath = @"/PersonF/person";

其他不变。 

　　

作者：Work Hard Work Smart
出处：http://www.cnblogs.com/linlf03/
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