WPF双向绑定XML [英] WPF two-way binding XML

问题描述

我挣扎得到认真处理WPF，更具体的执行双向的XML文件的约束力。我应该使用XMLDataProvider或者是他们的另一个（更好）的选项？
该数据显示正常，但当我更改条目的更改不会反映在XML文件中。

I'm struggling to get to grips with WPF, more specifically performing two way binding of an xml file. Should I be using XMLDataProvider or is their another(better) option? The data is displaying fine but when I change an entry the changes aren't reflected in the xml file.

中的XML：

    <?xml version="1.0" encoding="utf-8" ?>
<Licence>
 <Market>
  <Name>DAX</Name>
  <Begin>01/01/2010</Begin>
  <End>01/04/2010</End>
 </Market>
 <Market>
  <Name>DJI</Name>
  <Begin>01/07/2010</Begin>
  <End>01/10/2010</End>
 </Market>
</Licence>

在XAML：

<Window x:Class="WpfApplication5.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>
    <DataTemplate x:Key="LicenceTemplate"> 
        <Label Content="{Binding XPath=Name}"/>
    </DataTemplate>
</Window.Resources>
<Grid>
    <Grid.DataContext>
        <XmlDataProvider x:Name="XMLData" Source="XMLFile1.xml" XPath="Licence/Market"/>

    </Grid.DataContext>
    <StackPanel>
        <DataGrid x:Name="DataGridLic"  ItemsSource="{Binding}" AutoGenerateColumns="False" Height="200" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="300" CellEditEnding="DataGridLic_CellEditEnding">
            <DataGrid.Columns>
                <DataGridTextColumn x:Name="nameColumn" Binding="{Binding XPath=Name, Mode=TwoWay}" Header="Name" Width="100" Foreground="#FFC28383" />
                <DataGridTextColumn x:Name="BegColumn" Binding="{Binding XPath=Begin, Mode=TwoWay}" Header="Begin" Width="100" Foreground="#FFC14040" />
                <DataGridTextColumn x:Name="EndColumn" Binding="{Binding XPath=End, Mode=TwoWay}" Header="End" Width="100" Foreground="#FFC14040" />
            </DataGrid.Columns>
        </DataGrid>


    </StackPanel>
</Grid>

在codeBehind：

The CodeBehind:

 public MainWindow()
    {
        InitializeComponent();
    }

    private void DataGridLic_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
    {
       XMLData.Document.Save("XMLFile1.xml");
    }

更新：
对XML数据绑定一些有用的资源：

UPDATE: Some useful resources for xml databinding:

http://msdn.microsoft.com/en-us/library/ bb669141.aspx

http://msdn.microsoft.com/en-us/library/ cc165615.aspx

推荐答案

使用XMLDataProvider没问题。你只需要确保你读取和写入同一个XML文件。

No problem using the XMLDataProvider. You just need to make sure you are reading and writing to the same XML file.

只需更新code如下：

Just update your code as follows;

public MainWindow()
{
    InitializeComponent();
    var xmlFilePath = @"c:\whatever\XMLFile1.xml";
    XMLData.Source = new Uri(xmlFilePath);
}

private void DataGridLic_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
{
   var xmlSource = XMLData.Source.LocalPath;
   XMLData.Document.Save(xmlSource);
}

这篇关于WPF双向绑定XML的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！