我是WPF MVVM的新手。我想知道如何检测ViewModel中的SelectedCellsChanged事件。有没有办法检测该事件而不将任何代码放入代码隐藏文件。这是我的代码。
MainWindow.xaml
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525"
DataContext="{StaticResource CusVM}">
<Grid>
<Button x:Name="myButton" Command="{Binding MyButtonClickCommand}" Width="100" Height="50" Content="click" Margin="0,10,417,260" />
<Label Content="{Binding Name}" Margin="105,37,23,251" />
<TextBox x:Name="inputBox1" Width="200" Height="30" Margin="22,74,295,216" Text="{Binding Text1, UpdateSourceTrigger=PropertyChanged}" />
<TextBox Width="200" Height="30" Margin="263,74,54,216" />
<ComboBox HorizontalAlignment="Left" Margin="122,10,0,0" VerticalAlignment="Top" Width="236" ItemsSource="{Binding Addresses}" SelectedItem="{Binding SelectedAddress}" DisplayMemberPath="AddressLine1" >
</ComboBox>
<DataGrid Margin="0,109,0,10" ItemsSource="{Binding Addresses}"/>
</Grid>
查看模型：CustomerViewModel
namespace WpfApplication1.ViewModels
{
public class CustomerViewModel : EventBase
{
public ICommand MyButtonClickCommand
{
get { return new DelegateCommand(FuncToCall, FuncToEvaluate); }
}
private Address selected_address;
public Address SelectedAddress
{
get { return selected_address; }
set { selected_address = value; OnPropertyChanged("SelectedAddress"); Name = value.AddressLine1; }
}
IEnumerable<Address> addresses = new List<Address>();
public IEnumerable<Address> Addresses
{
get { return addresses; }
set
{
addresses = value;
OnPropertyChanged("Addresses");
}
}
public CustomerViewModel()
{
fillList();
}
private void fillList()
{
List<Address> addr = new List<Address>();
addr.Add(new Address() { AddressID=1, AddressLine1="test1"});
addr.Add(new Address() { AddressID=2, AddressLine1="test2"});
addr.Add(new Address() { AddressID = 3, AddressLine1 = "test3" });
addresses = addr;
}
private string text1;
public string Text1
{
get { return text1; }
set {
text1 = value;
OnPropertyChanged("Text1");
Name = text1;
}
}
private string name;
public string Name
{
get { return name; }
set {
name = value;
OnPropertyChanged("Name");
}
}
private void FuncToCall(object context)
{
Name = "test result";
}
private bool FuncToEvaluate(object context)
{
return true;
}
}
}