获取/设置视图模型的文本框输入

对于你的gui更新你必须实现INotifyPropertyChanged和调用它对你所有的绑定属性。

// basic base class for your models, you a
public class ModelBase : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    [NotifyPropertyChangedInvocator] // remove if you are not using R#
    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
    }
}
// your model
public class Model : ModelBase
{
    private string modelName;
    private Template template;
    public string ModelName
    {
        get { return modelName; }
        set
        {
            if (value == modelName) return;
            modelName = value;
            OnPropertyChanged();
        }
    }
    public virtual Template Template
    {
        get { return template; }
        set
        {
            if (Equals(value, template)) return;
            template = value;
            OnPropertyChanged();
        }
    }
}

视图:

<DockPanel>
    <StackPanel Margin="0,78,0,68" Width="233"> 
    <ComboBox IsEditable="True" Text="{Binding ModelName, Mode='TwoWay'}" SelectedItem="{Binding SelectedModel}" ItemsSource="{Binding Models}"/>
    <TextBox Height="23" TextWrapping="Wrap" Text="{Binding SONumber Mode='TwoWay'}"/>
    <TextBox Height="23" TextWrapping="Wrap" Text="{Binding SerialNumber Mode='TwoWay'}"/>
    <Button Content="Button"/>
</StackPanel>

注意Mode=' two - way '，这会使GUI更改视图模型中的值，而不仅仅是显示它们。所以你需要像上面那样在所有应该是可编辑的东西上设置这个。WPF的默认行为是，当控件失去焦点时，它将更新绑定的属性，如果设置UpdateSourceTrigger='PropertyChanged'，则每次在文本框中输入字母时，属性都会更新。我将把这部分留给你，但你必须在你的vm中完成!至少属性number,SerialNumber和Models(如果是ref. changes)。

VM:我假设你在这里使用galasoft

public class LauncherViewModel : ViewModelBase
{
    private ESTContext _ESTContext;
    private string _templatename;
    private string _modelname;
    private string serialNumber;
    private string _outputname;
    private string modelName;
    private ObservableCollection<Model> models;
    private Model selectedModel;
    private string soNumber;
    public LauncherViewModel()
    {
        // dangerous ;)
        _ESTContext = new ESTContext();
        Models = new ObservableCollection<Model>(_ESTContext.Models);
    }

    public ObservableCollection<Model> Models
    {
        get { return models; }
        set
        {
            if (Equals(value, models)) return;
            models = value;
            RaisePropertyChanged();
        }
    }
    public string ModelName
    {
        get { return modelName; }
        set
        {
            if (value == modelName) return;
            modelName = value;
            RaisePropertyChanged();
        }
    }
    public string TemplateName { get { return _templatename;  }}
    public string SerialNumber // Note you spelled this wrong in your xaml. SONumber
    {
        get { return serialNumber; }
        set
        {
            if (value == serialNumber) return;
            serialNumber = value;
            RaisePropertyChanged();
        }
    }
    public string SONumber
    {
        get { return soNumber; }
        set
        {
            if (value == soNumber) return;
            soNumber = value;
            RaisePropertyChanged();
        }
    }
    public string OutputName { get { return _outputname; } }
    public Model SelectedModel
    {
        get { return selectedModel; }
        set
        {
            if (Equals(value, selectedModel)) return;
            selectedModel = value;
            RaisePropertyChanged();
        }
    }
}

如果你将galasoft或sim与r#一起使用，这是一个很酷的小事情。

public class YourViewModelBase : ViewModelBase
{
    [NotifyPropertyChangedInvocator] // alt + enter = convert auto property to prop  
                                     // with backing field and change notification :)
    override protected void RaisePropertyChanged([CallerMemberName] string propertyName = null)
    {
        base.RaisePropertyChanged(propertyName);
    }
    // .. :)
}

欢呼,

Stian

如果我没有误解你的问题，将模型绑定到ComboBox的ItemsSource而不是将其绑定到StackPanel的DataContext

删除DataContext绑定

<StackPanel Margin="0,78,0,68" Width="233" >

将ComboBox的Itemssource绑定到Models，你还必须指定DisplayMemberPath到你想在ComboBox中显示的Model的属性。

<ComboBox IsEditable="True" ItemsSource="{Binding Models}" Text="{Binding ModelName}" SelectedItem="{Binding SelectedModel}"/>

我假设你正在设置窗口的DataContext到LauncherViewModel类的实例

你需要在你绑定的属性上引发property changed事件，即:

private string _ModelName;
    public string ModelName
    {
        get { return _ModelName; }
        set
        {
            if (_ModelName != value)
            {
                _ModelName = value;
                RaisePropertyChanged("ModelName");
            }
        }
    }

在你的基本视图模型中，你需要这样的东西(确保你实现了INotifyPropertyChanged):

     public event PropertyChangedEventHandler PropertyChanged;
    protected void RaisePropertyChanged(string propertyName)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
    }

在视图的构造函数或加载事件中添加:

DataContext = new LauncherViewModel();