好吧,我尝试了几种方法,但是在我的情况下,没有一个可以正常工作。我有一个带有单个组合的简单窗口。我正在将代码更改为MVVM,因此现在所有内容仍在代码中,应该转到ViewModel等。
但是,即使在第一步(将视图模型绑定到视图/窗口(,我似乎也无法将它们绑定在一起。
我的窗口xaml:
<Window x:Class="CustomerGuidance.ClientWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:VM="clr-namespace:CustomerGuidance.ViewModels"
Title="Stop'n'Go - Client" Height="22" Width="229"
Loaded="ClientWindow_OnLoaded" WindowStyle="None"
WindowStartupLocation="Manual" Top="0" Left="0"
ResizeMode="NoResize" ShowInTaskbar="False" Topmost="True">
<Window.DataContext>
<VM:EmployeeViewModel />
</Window.DataContext>
<Canvas Background="Gainsboro">
<ComboBox Name="EmployeesComboBox"
ItemsSource="{Binding EmployeeEntries}"
Width="192" FontFamily="Arial" FontSize="14">
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Lastname}" />
<TextBlock Text=", " />
<TextBlock Text="{Binding Surname}" />
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
</Canvas>
ViewModel看起来像这样:
using System.Collections.ObjectModel;
using System.ComponentModel;
namespace CustomerGuidance.ViewModels
{
public class EmployeeViewModel : INotifyPropertyChanged
{
public EmployeeViewModel()
{
}
public static ObservableCollection<ServerWindow.EmployeeEntry> EmployeeEntries { get; set; } = new ObservableCollection<ServerWindow.EmployeeEntry>();
private string _surname;
private string _lastname;
private int _id;
public string Surname
{
get { return _surname; }
set
{
if (_surname == value)
return;
_surname = value;
NotifyPropertyChanged("Surname");
}
}
public string Lastname
{
get { return _lastname; }
set
{
if (_lastname == value)
return;
_lastname = value;
NotifyPropertyChanged("Lastname");
}
}
public int Id
{
get { return _id; }
set
{
if (_id == value)
return;
_id = value;
NotifyPropertyChanged("Id");
}
}
public virtual event PropertyChangedEventHandler PropertyChanged;
protected virtual void NotifyPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
handler?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
}
我会收到以下错误消息:" employeeviewModel"名称空间" clr-namespace:customerguidance.viewmodels"。
现在问题:我如何丢失什么?viewModel到我的window-xaml?
您应该构建代码以消失。
这是因为命名空间尚未在组件中可用,设计师在构建之前依赖(您的程序(。