wpf组合框结合

Question

嗨,我正在尝试将List <>绑定到组合框.

<ComboBox Margin="131,242,275,33" x:Name="customer" Width="194" Height="25"/>

public OfferEditPage()
    {
        InitializeComponent();
        cusmo = new CustomerViewModel();
        DataContext = this;
        Cusco = cusmo.Customer.ToList<Customer>();
        customer.ItemsSource = Cusco;
        customer.DisplayMemberPath = "name";
        customer.SelectedValuePath = "customerID";
        customer.SelectedValue = "1";
    }

我变得没有错误,但Combobox总是空的.库斯科是我的名单的财产.我不知道这段代码有什么问题.你能帮助我吗？

电贺

 public class Customer
{
    public int customerID { get; set; }
    public string name { get; set; }
    public string surname { get; set; }
    public string telnr { get; set; }
    public string email { get; set; }
    public string adress { get; set; }
}

这是我的模型的客户类.

public class CustomerViewModel
{
    private ObservableCollection<Customer> _customer;

    public ObservableCollection<Customer> Customer
    {
        get { return _customer; }
        set { _customer = value; }
    }

    public CustomerViewModel()
    {
        GetCustomerCollection();
    }

    private void GetCustomerCollection()
    {
        Customer = new ObservableCollection<Customer>(BusinessLayer.getCustomerDataSet());
    }

}

这是ViewModel.

Answer 1

尝试使用实际的Binding对象设置ItemsSource属性

XAML方法(推荐):

<ComboBox
    ItemsSource="{Binding Customer}"
    SelectedValue="{Binding someViewModelProperty}"
    DisplayMemberPath="name"
    SelectedValuePath="customerID"/>

程序化方法:

Binding myBinding = new Binding("Name");
myBinding.Source = cusmo.Customer; // data source from your example

customer.DisplayMemberPath = "name";
customer.SelectedValuePath = "customerID";
customer.SetBinding(ComboBox.ItemsSourceProperty, myBinding);

此外,Customer属性上的setter应该引发PropertyChanged事件

public ObservableCollection<Customer> Customer
{
    get { return _customer; }
    set
    {
        _customer = value;
        RaisePropertyChanged("Customer");
    }
}

如果上述操作无效,请尝试将绑定部分从构造函数移动到OnLoaded覆盖方法.页面加载时,可能会重置您的值.