问题描述
首先，这是我的第一个WPF应用程序，因此与C#Windows窗体相比，我在这里学习了很多新概念. 我已经审查了 其他帖子，但没有看到我认为的答案.
First of all, this is my first WPF application so I have been learning a lot of new concepts here as compared to C# Windows Forms. I've reviewed other posts and didn't see what I believed to be an answer.
I有一个WPF绑定问题. 我正在使用MVVM编写WPF应用程序，该应用程序使用WCF服务从Oracle数据库中获取数据并以ObservableCollection的形式返回数据.我的实体类. (注意:自从我写了我自己的实体类 我们正在使用Oracle.我意识到NHibernate在那里，但是我还没有对它进行太仔细的研究，因为所有这一切对我来说都是新的，编写代码现在可以帮助我学习.)我有一个Section类和SectionData类. 在这篇文章中，为简单起见，我在这里更改了名称.
I have a WPF binding question. I am writing a WPF application using MVVM that uses WCF services to fetch data from an Oracle database and return the data as an ObservableCollection<> of my Entity classes. (Note: I have written my own entity classes since we are using Oracle. I realize NHibernate is out there, but I haven't investigated it too closely as all of this is new to me and writing the code helps me learn right now.) I have a Section class and SectionData class. In this post, I have changed the names here for simplicity.
Section类具有以下属性:int Id，double BeginPoint，double EndPoint，字符串BeginDescription，字符串EndDescription，ObservableCollection< SectionData>. SectionDataCollection等.
The Section class has the properties: int Id, double BeginPoint, double EndPoint, string BeginDescription, string EndDescription, ObservableCollection<SectionData> SectionDataCollection, etc.
SectionData类具有以下属性:int SectionId，int Year，string Condition1，字符串Condition2，等等.
因此，基本上，一个Section具有SectionData的集合. "> 存在SectionData类是为了包含该数据收集年份的Section的条件数据.用户需要与Sections及其SectionData的集合进行交互.
So basically a Section has a collection of SectionData. The SectionData class exists in order to contain condition data for the Section for the Years the data has been collected. The user needs to interact with a collection of Sections and their SectionData.
在我的SectionViewModel类中，我有一个ObservableCollection< SectionData>属性称为SectionCollection. SectionView类绑定到此属性以在ListView中显示信息.
In my SectionViewModel class, I have an ObservableCollection<SectionData> property called SectionCollection. The SectionView class binds to this property to display information in a ListView.
这是我的问题，我可以让ListView显示一个通过执行以下操作可以毫无问题地列出部分:
SectionViewModel .cs:
SectionViewModel.cs:
此处是Section实体集合的属性. 每个Section包含一个ObservableCollection of SectionData.
Here’s the property for the Collection of Section entities. Each Section contiains an ObservableCollection of SectionData.
public ObservableCollection < Section > SectionCollection
publicObservableCollection<Section> SectionCollection
{
获取 {返回 _sectionCollection； }
get { return _sectionCollection; }
设置
set
{
{
如果(_sectionCollection == 值)
if (_sectionCollection == value)
返回;
return;
_sectionCollection = 值;
_sectionCollection = value;
base .OnPropertyChanged("SectionCollection" );
base.OnPropertyChanged("SectionCollection");
}
}
}
出于测试目的，我对SectionViewModel的构造函数进行硬编码，以请求WCF服务提供2006年和2008年的所有部分 并使用以下结果填充我的SectionCollection属性:
For testing purposes, I’ve hard-coded the constructor of SectionViewModel to request all sections for the years 2006 and 2008 from the WCF Service and populate my SectionCollection property with the results like so:
ServiceReference1. ServiceClient serviceClient =新 ServiceReference1. ServiceClient ();
ServiceReference1.ServiceClient serviceClient =new ServiceReference1.ServiceClient();
SectionCollection = serviceClient.GetSections(
] 新 ObservableCollection < int > {2006，2008});
new ObservableCollection<int> { 2006, 2008 });
SectionView.xaml:
< UserControl x : 类 =" WpfApplicationTest.SectionView"
xmlns =" http://schemas .microsoft.com/winfx/2006/xaml/presentation;
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns : x =" http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns : mc =" http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns : d =" http://schemas.microsoft.com/expression/blend/2008"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns : 模型 =" clr-namespace:Entities; assembly = Entities"
xmlns:model="clr-namespace:Entities;assembly=Entities"
mc : 不可思议 =" d"
mc:Ignorable="d"
d : DesignHeight ="196" d : DesignWidth ="548">
d:DesignHeight="196" d:DesignWidth="548">
< ListView 名称 =" listViewSectionData" ItemsSource =""{ 绑定 SectionCollection }>
<ListView Name="listViewSectionData"ItemsSource="{Binding SectionCollection}">
< ListView.View >
; < GridView >
<GridView>
<！-我知道这不是显示年份的方法，但不知道如何进行. ->
<!-- I know that this isn't the way to display the year, but don't know how to do it. -->
; < GridViewColumn 页眉 =" 年" DisplayMemberBinding =""{ 绑定 SectionDataCollection .SurveyYear}". />
<GridViewColumn Header=" Year " DisplayMemberBinding="{Binding SectionDataCollection.SurveyYear}" />
; < GridViewColumn 页眉 =" 起点 DisplayMemberBinding =""{ 绑定 BeginPoint }"//>
<GridViewColumn Header=" Begin Point " DisplayMemberBinding="{Binding BeginPoint}"/>
; < GridViewColumn 标题 ="端点 DisplayMemberBinding =""{ 绑定 EndPoint }"/>
<GridViewColumn Header=" End Point " DisplayMemberBinding="{Binding EndPoint}"/>
; < GridViewColumn 页眉 =" 开始说明 DisplayMemberBinding =""{ 绑定 BeginDescription }"//>
<GridViewColumn Header=" Begin Description " DisplayMemberBinding="{Binding BeginDescription}"/>
; < GridViewColumn 页眉 =" 结束说明 DisplayMemberBinding =""{ 绑定 EndDescription }"//>
<GridViewColumn Header=" End Description " DisplayMemberBinding="{Binding EndDescription}"/>
; < GridViewColumn 标题 =" Condition1 DisplayMemberBinding =""{ 绑定 SectionDataCollection .Condition1 }" />
<GridViewColumn Header=" Condition1 " DisplayMemberBinding="{Binding SectionDataCollection .Condition1}" />
< GridViewColumn 标头 ="条件2 " DisplayMemberBinding =""{ 绑定 SectionDataCollection .Condition2 }" />
<GridViewColumn Header=" Condition2 " DisplayMemberBinding="{Binding SectionDataCollection .Condition2}" />
; </ GridView >
</GridView>
; </ ListView.View >
</ListView.View>
</ ListView >
</ UserControl >
MainWindow.xaml:
< 窗口 x : 类 =" WpfApplicationTreeViewTest.MainWindow"
xmlns =" http://schemas .microsoft.com/winfx/2006/xaml/presentation;
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns : x =" http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns : 本地 =" clr-namespace:WpfApplicationTest"
xmlns:local="clr-namespace:WpfApplicationTest"
xmlns : 视图模型 =" clr-namespace:WpfApplicationTest.ViewModel"
xmlns:viewmodel="clr-namespace:WpfApplicationTest.ViewModel"
标题 ="MainWindow" 高度 ="472" 宽度 ="616"
Title="MainWindow" Height="472" Width="616"
SizeToContent ="宽度">
SizeToContent="Width">
< Window.Resources >
; <！-将SectionView绑定到MainWindow构造函数中定义的SectionViewModel. ->
<!-- Bind a SectionView to the SectionViewModel defined in the MainWindow constructor. -->
; < DataTemplate DataType =&"; { x : 类型 viewmodel : SectionViewModel }">
<DataTemplate DataType="{x:Type viewmodel:SectionViewModel}">
; < 本地 : SectionView />
<local:SectionView />
; </ DataTemplate >
</DataTemplate>
</ Window.Resources > 跨度>
< 网格 >
< ContentControl 内容 =&; { 绑定 }" />
<ContentControl Content="{Binding}" />
</ 网格 >
</ 窗口 >
MainWindow.xaml.cs:
public MainWindow()
{
InitializeComponent();
InitializeComponent();
此 .DataContext = 新 SectionViewModel (新第(1，0.0，0.9，" BEGIN" ，" END” )));
this.DataContext = new SectionViewModel(newSection(1, 0.0, 0.9, "BEGIN", "END”));
}
那不是我想要的. 我想在ListView中显示以下列:
That is not what I want though. I want to display the following columns in the ListView:
|年份 | BeginPoint |端点| BeginDescription |结束说明|条件1 | Condition2 |
|Year | BeginPoint | EndPoint | BeginDescription | EndDescription | Condition1 | Condition2 |
数据可能看起来像这样(映射到以上各列):
2006、0.0、0.9，"BEG"，"END" ;，“ N”，“ M”
2008、0.0、0.9，"BEG"，"END" ;，“ N”，“ S”
2006, 0.9, 1.4, “TEST”, “ENDER”, “N”, “N”
2008, 0.9, 1.4, “TEST”, “ENDER”, “N”, “N”
So, I want to display the data for the years of data collected for each Section. So, lets assume that a Section with Id 1, could have SectionData for 2006 and 2008, and a Section with Id 2 has SectionData for 2006. How do I use WPF databinding in a ListView to display this collection of Sections with their collection of SectionData?
So, I want to display the data for the years of data collected for each Section. So, lets assume that a Section with Id 1, could have SectionData for 2006 and 2008, and a Section with Id 2 has SectionData for 2006. How do I use WPF databinding in a ListView to display this collection of Sections with their collection of SectionData?
I will make a sample project and post code if it would be helpful. Thanks for any suggestions!
I will make a sample project and post code if it would be helpful. Thanks for any suggestions!
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