我有2個用戶控制一個名爲過濾器和一個命名的FilterItemSilverlight中綁定組合框
過濾器看起來是這樣的:
<UserControl xmlns:my="clr-namespace:AttorneyDashboard.Views.UserControls" x:Class="AttorneyDashboard.Views.UserControls.Filters"
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:helpers="clr-namespace:AttorneyDashboard.Helpers"
mc:Ignorable="d"
d:DesignHeight="150" d:DesignWidth="590" x:Name="FiltersRoot">
<Grid>
<ListBox x:Name="myListBox" ItemsSource="{Binding Path=FilterItems, ElementName=FiltersRoot}" >
<ListBox.ItemTemplate>
<DataTemplate>
<my:FilterItem ColumnsList="{Binding Path=Columns_, ElementName=FiltersRoot}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</UserControl>
代碼背後:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Collections.ObjectModel;
using System.Diagnostics;
using AttorneyDashboard.Helpers;
namespace AttorneyDashboard.Views.UserControls
{
public class MyItems
{
public string Header { get; set; }
}
public partial class Filters : UserControl
{
public Filters()
{
InitializeComponent();
}
private DependencyProperty FilterItemsProperty = DependencyProperty.Register("FilterItems", typeof(ObservableCollection<FilterDescriptor>), typeof(Filters), new PropertyMetadata(null, new PropertyChangedCallback(OnChangeFilterItems)));
public ObservableCollection<FilterDescriptor> FilterItems
{
get
{
return (ObservableCollection<FilterDescriptor>)GetValue(FilterItemsProperty);
}
set
{
SetValue(FilterItemsProperty, value);
}
}
public static void OnChangeFilterItems(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
}
public List<MyItems> Columns_
{
get
{
List<MyItems> list = new List<MyItems>();
list.Add(new MyItems() { Header = "test1" });
list.Add(new MyItems() { Header = "test2" });
list.Add(new MyItems() { Header = "test3" });
return list;
}
}
}
}
FilterItems樣子此
<UserControl x:Class="AttorneyDashboard.Views.UserControls.FilterItem"
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"
mc:Ignorable="d"
d:DesignHeight="23" d:DesignWidth="590" xmlns:my="clr-namespace:AttorneyDashboard.Helpers" x:Name="FilterItemRoot">
<StackPanel Orientation="Horizontal">
<ComboBox Height="23" HorizontalAlignment="Left" Name="FieldName" VerticalAlignment="Top" Width="120" Margin="5,0,0,0" ItemsSource="{Binding Path=ColumnsList, ElementName=FilterItemRoot}" SelectedItem="{Binding PropertyPath, Mode=TwoWay}" DisplayMemberPath="Header"/>
</StackPanel>
</UserControl>
後面的代碼:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using AttorneyDashboard.Helpers;
using System.Windows.Data;
namespace AttorneyDashboard.Views.UserControls
{
public partial class FilterItem : UserControl
{
public FilterItem()
{
InitializeComponent();
}
private DependencyProperty ColumnsListProperty = DependencyProperty.Register("ColumnsList", typeof(List<MyItems>), typeof(FilterItem), new PropertyMetadata(null, new PropertyChangedCallback(OnChangeColumns)));
public List<MyItems> ColumnsList
{
get
{
return (List<MyItems>)GetValue(ColumnsListProperty);
}
set
{
SetValue(ColumnsListProperty, value);
}
}
public static void OnChangeColumns(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
}
}
}
FilterItems的數量是確定的(這意味着FilterItems結合工程確定),但人口只有最後的FilterItem的組合框... 我不知道究竟是錯的...
更新: 我發現爲什麼,但我stll不知道解決辦法... 它接縫,他的特性是之前的FilterItem的內容綁定.. 所以的FilterItem的組合框綁定在Columns屬性綁定之前...
您是不是想在綁定表達式中使用「PropertyPath」:SelectedItem =「{Binding PropertyPath,Mode = TwoWay}」? – 2010-11-05 15:39:58
..yeap ..我想我還需要一個轉換器..但這不是綁定不起作用的原因.... – bogdanbrudiu 2010-11-05 16:12:59