用户控件中DataConrid的DataContext(DataContext to DataGrid in user control)

用户控件中DataConrid的DataContext(DataContext to DataGrid in user control)

我有一个带tabcontrol的主窗口。 添加带有用户控件内容的新tabitem。 在xaml中：

<Grid><DataGrid DataContext="{Binding Path=Patients, Mode=TwoWay}"> <DataGrid.Columns> <DataGridTextColumn Header="Id" Width="Auto" Binding="{Binding Id}"/>

在代码背后：打开上下文，

var query = from pp in context.Patients select pp; var Patients = query.ToList(); TabItem patientsView = new TabItem(); // adding new tabitem StackPanel header = new StackPanel header.Children.Add(new TextBlock {Text="Patients"}); patientsView.Header = header; patientsView.Content = new ViewDataPatients{DataContext = Patients};

它拒绝将绑定数据填充到网格中。 知道我在做错了吗？

I have a main window with tabcontrol. Adding a new tabitem with a user control content. In the xaml:

<Grid><DataGrid DataContext="{Binding Path=Patients, Mode=TwoWay}"> <DataGrid.Columns> <DataGridTextColumn Header="Id" Width="Auto" Binding="{Binding Id}"/>

In code behind: Opening context,

var query = from pp in context.Patients select pp; var Patients = query.ToList(); TabItem patientsView = new TabItem(); // adding new tabitem StackPanel header = new StackPanel header.Children.Add(new TextBlock {Text="Patients"}); patientsView.Header = header; patientsView.Content = new ViewDataPatients{DataContext = Patients};

It refuses to populate the bind data to the grid. Any idea where I am doing this wrong?

最满意答案

无法理解为什么你需要这样的方法，但仍然。 您已将UserControl的DataContext设置为Patiense，因此DataGrid同时具有此数据上下文，请执行以下操作：

<DataGrid DataContext="{Binding}">

但在你的情况下，这是多余的。 要使用刚刚设置的ItemsSource数据填充DataGrid：

<DataGrid ItemsSource="{Binding}">

希望这可以帮助。

金问候，纳扎尔

can't understand why you need such approach, but still. You've set DataContext of your UserControl to Patiense, so DataGrid alreay have this data context, enought the following:

<DataGrid DataContext="{Binding}">

But this is redundant in your case. To populate DataGrid with data just set ItemsSource:

<DataGrid ItemsSource="{Binding}">

Hope this helps.

King regards, Nazar