数据绑定不起作用。 [英] Databinding not working.

问题描述

大家好，

我在WPF中使用了一个XML文件作为数据网格的数据源。



XML： -

Hi All,
I have used one XMLfile as data source for my datagrid in a WPF.

XML:-

<?xml version="1.0" encoding="utf-8" ?>
<Profiles>
  <Profile Name="PGB570/120/600/120" Weight="19200" Bolt="42"/>
  <Profile Name="PGB570/100/600/100" Weight="16400" Bolt="42"/>
  <Profile Name="PGB570/70/600/70" Weight="13300" Bolt="36"/>
  <Profile Name="PGB570/60/600/60" Weight="10300" Bolt="36"/>
  <Profile Name="UC" Weight="8900" Bolt="30"/>
</Profiles>

在我的设计师中...

XAML：

And in my designer...
XAML:

<Window x:Class="TEST_APP.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:toolkit="http://schemas.microsoft.com/wpf/2008/toolkit"

        

        Title="TEST_APP" Height="280" Width="574""

        ResizeMode="CanMinimize">
    <Window.Resources>
        <XmlDataProvider x:Key="ProfileData" Source="Resources/ProfileList.xml" XPath="/Profiles/Profile"/>
    </Window.Resources>
    
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition Height="30"/>
        </Grid.RowDefinitions>
        <TabControl HorizontalAlignment="Stretch" Margin="0,0,0,0" VerticalAlignment="Stretch">
            <TabItem Header="Diagrid Diagonals">
                <Grid>
                    <DataGrid x:Name="profileData" HorizontalAlignment="Center" Height="147" Margin="0,0,0,20" VerticalAlignment="Center" Width="283" DataContext="{StaticResource ProfileData}" ItemsSource="{Binding XPath=/Profiles/Profile}" AutoGenerateColumns="False">
                        <DataGrid.Columns>
                            <DataGridTextColumn Header="Profile" Binding="{Binding XPath= @Name}"/>
                            <DataGridTextColumn Header="Max. Weight" Binding="{Binding XPath=@Weight}"/>
                            <DataGridTextColumn Header="Bolt Dia" Binding="{Binding XPath=@Bolt}"/>
                        </DataGrid.Columns>
                    </DataGrid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="303"/>
                        <ColumnDefinition Width="153"/>
                        <ColumnDefinition Width="91"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>
                </Grid>
            </TabItem>
        </TabControl>
    </Grid>
</Window>

设计器中的一切都很好用，我可以看到数据网格中填充了数据。但是在运行时它没有加载，只是一个空的数据网格。

请看看并帮助我。



我有什么尝试过：



代码在运行时也运行良好，但现在发生的事情并没有显示任何内容。这就是为什么我想知道!!。

我尝试过以不同的方式修改XAML但没有希望。请考虑我是WPF和XAML的初学者。

Everything works good in designer, and I can see the datagrid is populated with data. But on runtime its not loading, just an empty datagrid.
Please have a look and help me.

What I have tried:

The code worked very well on runtime also, but something happened now its not showing anything. That's why I am wondering!!.
I have tried modifying the XAML in different ways but no hope.Please consider as I am a begginer in WPF and XAML.

推荐答案

没有真正的解决方案，对不起..

但是：

我尝试了你的代码（复制到一个新项目），它按预期工作。所以我想说你的xaml或XML没有任何问题。但我认为最好将XML.file设置为build-action None并复制到输出目录，还是真的需要它作为资源？所以我会验证文件属性是否正确以及你想要什么。其他来自错误的文件设置我不知道可能会出错...可能重新开始（我只需要1分钟将您的代码和数据文件复制到新的解决方案），以排除一些项目设置你可能是无意中改变了......

No real solution, sorry..
But:
I tried your code (copied to a new project) and it worked as expected. So I would say there is nothing wrong with your xaml or XML. But I think it's best to set the XML.file to build-action None and copy to output directory or do you really need it as resource? So I would verify the file properties are correct and what you want. Other from wrong file Setting I have no idea would could have gone wrong with that... maybe start over again (I just needed 1 Minute to copy your code and data-file to a new solution), to rule out some project settings you may have changed unintentionally...

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