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我有一個控制，當我需要dislay人有兩個欄後顯示在comboboxcolumn成員： -fullname -best朋友只有點擊列
的問題是，在人這個屬性最好的朋友是一個對象。 在開始人有他自己的最好的朋友，但他可以改變它從組合框列。
現在，控件加載後最好的列是空白的。 當我雙擊這個專欄時，我可以改變bestfirend，並設置此人的最好朋友。
但是我必須做些什麼才能在開始不空欄？
我想，問題是，控制不能匹配最好的朋友，收集最好的朋友，所以我認爲我必須通過ID匹配他們，但我不知道我該怎麼做。
<UserControl x:Class="MvvmLight1.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" mc:Ignorable="d"
Height="300"
Width="300"
DataContext="{Binding Main, Source={StaticResource Locator}}">
<UserControl.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Skins/MainSkin.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</UserControl.Resources>
<Grid x:Name="LayoutRoot">
<telerik:RadGridView x:Name="grdSrL"
AutoGenerateColumns="False"
SelectionMode="Single"
IsReadOnly="False"
IsFilteringAllowed="True"
Height="386"
Width="460"
HorizontalAlignment="Left"
CanUserDeleteRows="False"
CanUserInsertRows="True"
CanUserReorderColumns="False"
CanUserResizeColumns="True"
ItemsSource="{Binding Persons}">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn DataMemberBinding="{Binding FullName}" IsReadOnly="True" Header="FullName" />
<telerik:GridViewComboBoxColumn ItemsSource="{Binding Friends,Source={StaticResource Main}}" ItemsSourceBinding="{Binding Friends,Source={StaticResource Main}}" Header="1st"
DataMemberBinding="{Binding BestFriend}"
DisplayMemberPath="FullName" />
</telerik:RadGridView.Columns>
</telerik:RadGridView>
</Grid>
</UserControl>
主要型號：
namespace MvvmLight1
{
public class Person:INotifyPropertyChanged
{
private string _fullName;
public string FullName
{
get { return _fullName; }
set
{
if (_fullName!=value)
{
_fullName = value;
OnPropertyChanged("FullName");
}
}
}
public int Id
{
get { return _id; }
set { _id = value; }
}
public Person BestFirend
{
get { return _bestFirend; }
set
{
if (_bestFirend!=value)
{
_bestFirend = value;
OnPropertyChanged("BestFirend");
}
}
}
private int _id;
private Person _bestFirend;
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
}
}
和視圖模型：
using System.Collections.ObjectModel;
using GalaSoft.MvvmLight;
namespace MvvmLight1.ViewModel
{
public class MainViewModel : ViewModelBase
{
public MainViewModel()
{
for (int i = 0; i < 3; i++)
{
var friend = new Person() {FullName = "Name" + (i + 3).ToString()};
_friends.Add(friend);
_persons.Add(new Person(){FullName = "Name"+i.ToString(),Id = i,BestFirend = friend});
}
}
private ObservableCollection<Person> _persons=new ObservableCollection<Person>();
public ObservableCollection<Person> Persons
{
get { return _persons; }
set
{
_persons = value;
}
}
public ObservableCollection<Person> Friends
{
get { return _friends; }
set
{
_friends = value;
}
}
private ObservableCollection<Person> _friends=new ObservableCollection<Person>();
}
}
和應用XAML
<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="MvvmLight1.App"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:vm="clr-namespace:MvvmLight1.ViewModel"
mc:Ignorable="d">
<Application.Resources>
<!--Global View Model Locator-->
<vm:ViewModelLocator x:Key="Locator"
d:IsDataSource="True" />
<vm:MainViewModel x:Key="Main"/>
</Application.Resources>
</Application>