我可以像这样绑定一个ListBox:
XAML:
<UserControl x:Class="TestDynamicForm123.Views.ViewCustomers"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<StackPanel Margin="10">
<ListBox ItemsSource="{Binding}"/>
</StackPanel>
</UserControl>
代码背后:
using System.Windows.Controls;
using TestDynamicForm123.ItemTypes;
namespace TestDynamicForm123.Views
{
public partial class ViewCustomers : UserControl
{
public ViewCustomers()
{
InitializeComponent();
DataContext = Customers.GetAll();
}
}
}
查看型号:
using System.Collections.ObjectModel;
namespace TestDynamicForm123.ItemTypes
{
class Customers : ItemTypes
{
protected ObservableCollection<Customer> collection;
public static ObservableCollection<Customer> GetAll()
{
ObservableCollection<Customer> customers = new ObservableCollection<Customer>();
customers.Add(new Customer() { FirstName = "Jay", LastName = "Anders", Age = 34 });
customers.Add(new Customer() { FirstName = "Jim", LastName = "Smith", Age = 23 });
customers.Add(new Customer() { FirstName = "John", LastName = "Jones", Age = 22 });
customers.Add(new Customer() { FirstName = "Sue", LastName = "Anders", Age = 21 });
customers.Add(new Customer() { FirstName = "Chet", LastName = "Rogers", Age = 35 });
customers.Add(new Customer() { FirstName = "James", LastName = "Anders", Age = 37 });
return customers;
}
}
}
但是我如何“将其提升到一个级别”,这样我就可以在代码中绑定到Customers本身,并在我的XAML中绑定到Customers各种方法,例如ListBox的GetAll()和另一个控件的GetBest()等?
我在后面的代码中尝试了这种语法:
DataContext = new Customers();
这两个语法在XAML中但都不起作用:
<ListBox ItemsSource="{Binding GetAll}"/> (returns blank ListBox)
<ListBox ItemsSource="{Binding Source={StaticResource GetAll}}"/> (returns error)
答案 0 :(得分:4)
您需要使用ObjectDataProvider
绑定到方法,但这应该是例外而不是常态。通常,您的VM只会公开您绑定的属性,包括公开所有相关Customer
的属性。
答案 1 :(得分:1)
您需要为视图创建视图模型类(CustomersViewModel)。 CustomersViewModel将通过您的视图(ViewCustomers)可以绑定的属性公开数据和命令(ICommand接口)。然后,您可以将ViewCustomers的DataContext设置为CustomersViewModel的实例。 查看以下有关WPF中Model-View-ViewModel模式的MSDN文章。