WPF绑定列表到Dictionary< string，Dictionary< string，bool>> [英] WPF binding listview to Dictionary<string, Dictionary<string, bool>>
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问题描述
我有一个问题，我必须从数据库中获取列表< string> ，创建字典<字典< string，bool>> ; ，并填写 listview 。
这是我的代码：
xaml：
< ListView x：Name =PlanningDataGrid
Grid.Row =0
宽度={Binding Path = ActualWidth，ElementName = grid}
ItemsSource ={Binding EventTypesCombinerCollection}
VerticalAlignment =Stretch
HorizontalContentAlignment =Stretch
VerticalContentAlignment =Stretch>
< / ListView>
型号：
code> public class MainViewModel_Combiner：BindableBase //модельпособытиямработыскважины
{
私人字典<字符串，字典< string，bool>> _eventTypesCombinerCollection;
///< summary>
///Именованныйдвумерныймассивсовмещениямероприятий。 СовмещениеопределяетсякакEventTypesCombinerCollection [type1] [type2]
///< / summary>
public Dictionary< string，Dictionary< string，bool>> EventTypesCombinerCollection
{
get {return _eventTypesCombinerCollection; }
set
{
_eventTypesCombinerCollection = value;
OnPropertyChanged（EventTypesCombinerCollection）;
}
}
public MainViewModel_Combiner（）
{
EventTypesCombinerCollection = new Dictionary< string，Dictionary< string，bool>>（）
GenerateEventTypesCocllectionFrameFromDataBase（）;
}
///< summary>
///Заполняетдвумерныйсловатьтиповмероприятий（абстракциядляполученияквадратнойтаблицысодинаковымизаголовкамистрокистолбцов）
///< / summary>
private void GenerateEventTypesCocllectionFrameFromDataBase（）
{
var EventTypesList = GetEventTypesList（）;
foreach（EventTypesList中的字符串eventTypeCombiner）
{
字典< string，bool> combineItems = new Dictionary< string，bool>（）;
foreach（String EventTypeCombining in EventTypesList）
{
combiningItems.Add（eventTypeCombining，false）;
}
EventTypesCombinerCollection.Add（eventTypeCombiner，combineItems）;
}
}
///< summary>
///СобираетсписоктиповмероприятийизБД
///< / summary>
///< returns>< / returns>
私人列表< string> GetEventTypesList（）
{
using（var db = new IP_dbEntities（））
{
return db.EVENTS_TYPE.Select（e => e.event_type.Trim（）） .ToList（）;
}
}
}
和xaml.cs文件：
public partial class Combiner：Window
{
public Combiner（）
{
InitializeComponent（）;
CreateDataGridColumns（）;
}
private void CreateDataGridColumns（）
{
var gridView = new GridView（）;
PlanningDataGrid.View = gridView;
gridView.Columns.Add（new GridViewColumn（）{Header =Типмероприятия，DisplayMemberBinding = new Binding（Key）}）; //Создаемпервыйстолбец
var eventTypeList = GetEventTypesList（）;
foreach（eventTypeList中的string eventType）
{
var listViewColumn = new GridViewColumn
{
标题= eventType，
DisplayMemberBinding = new Binding（Value [ + eventType +]），
宽度= 30，
CellTemplate = GenerateCellTemplate（eventType），
};
gridView.Columns.Add（listViewColumn）;
}
}
private DataTemplate GenerateCellTemplate（string eventType）
{
var template = new DataTemplate（）;
FrameworkElementFactory factory = new FrameworkElementFactory（typeof（CheckBox））;
factory.SetBinding（ToggleButton.IsCheckedProperty，new Binding（Value [+ eventType +]））;
template.VisualTree = factory;
返回模板;
}
///< summary>
///СобираетсписоктиповмероприятийизБД
///< / summary>
///< returns>< / returns>
私人列表< string> GetEventTypesList（）
{
using（var db = new IP_dbEntities（））
{
return db.EVENTS_TYPE.Select（e => e.event_type.Trim（）） .ToList（）;
}
}
}
你知道吗，如何解决这个问题，还是做新的？
解决方案
非常感谢StepUp和Ilan的帮助。我只需要删除这行就是代码：
DisplayMemberBinding = new Binding（Value [+ eventType +] ），
所以有一个解决方案：
公共部分类Combiner：Window
{
public Combiner（）
{
InitializeComponent（）;
CreateDataGridColumns（）;
}
private void CreateDataGridColumns（）
{
var gridView = new GridView（）;
PlanningDataGrid.View = gridView;
gridView.Columns.Add（new GridViewColumn（）{Header =Типмероприятия，DisplayMemberBinding = new Binding（Key）}）; //Создаемпервыйстолбец
var eventTypeList = GetEventTypesList（）;
foreach（eventTypeList中的string eventType）
{
绑定绑定= new Binding（）;
var listViewColumn = new GridViewColumn
{
标题= eventType，
宽度= 30，
CellTemplate = GenerateCellTemplate（eventType），
};
gridView.Columns.Add（listViewColumn）;
}
}
private DataTemplate GenerateCellTemplate（string eventType）
{
FrameworkElementFactory checkbox = new FrameworkElementFactory（typeof（CheckBox））;
checkbox.SetBinding（ToggleButton.IsCheckedProperty，new Binding（Value [+ eventType +]）{Mode = BindingMode.TwoWay}）;
返回新的DataTemplate（）{VisualTree = checkbox};
}
///< summary>
///СобираетсписоктиповмероприятийизБД
///< / summary>
///< returns>< / returns>
私人列表< string> GetEventTypesList（）
{
using（var db = new IP_dbEntities（））
{
return db.EVENTS_TYPE.Select（e => e.event_type.Trim（）） .ToList（）;
}
}
}
I've got a problem, I have to take List<string> from database, create Dictionary<Dictionary<string, bool>> on it and fill listview with it.
Here is my code:
xaml:
<ListView x:Name="PlanningDataGrid"
Grid.Row="0"
Width="{Binding Path=ActualWidth, ElementName=grid}"
ItemsSource="{Binding EventTypesCombinerCollection}"
VerticalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch">
</ListView>
model:
public class MainViewModel_Combiner : BindableBase // модель по событиям работы скважины
{
private Dictionary<string, Dictionary<string, bool>> _eventTypesCombinerCollection;
/// <summary>
/// Именованный двумерный массив совмещения мероприятий. Совмещение определяется как EventTypesCombinerCollection["type1"]["type2"]
/// </summary>
public Dictionary<string, Dictionary<string, bool>> EventTypesCombinerCollection
{
get { return _eventTypesCombinerCollection; }
set
{
_eventTypesCombinerCollection = value;
OnPropertyChanged("EventTypesCombinerCollection");
}
}
public MainViewModel_Combiner()
{
EventTypesCombinerCollection = new Dictionary<string, Dictionary<string, bool>>();
GenerateEventTypesCocllectionFrameFromDataBase();
}
/// <summary>
/// Заполняет двумерный словать типов мероприятий (абстракция для получения квадратной таблицы с одинаковыми заголовками строк и столбцов)
/// </summary>
private void GenerateEventTypesCocllectionFrameFromDataBase()
{
var EventTypesList = GetEventTypesList();
foreach (string eventTypeCombiner in EventTypesList)
{
Dictionary<string, bool> combiningItems = new Dictionary<string, bool>();
foreach (string eventTypeCombining in EventTypesList)
{
combiningItems.Add(eventTypeCombining, false);
}
EventTypesCombinerCollection.Add(eventTypeCombiner, combiningItems);
}
}
/// <summary>
/// Собирает список типов мероприятий из БД
/// </summary>
/// <returns></returns>
private List<string> GetEventTypesList()
{
using (var db = new IP_dbEntities())
{
return db.EVENTS_TYPE.Select(e => e.event_type.Trim()).ToList();
}
}
}
and xaml.cs file:
public partial class Combiner : Window
{
public Combiner()
{
InitializeComponent();
CreateDataGridColumns();
}
private void CreateDataGridColumns()
{
var gridView = new GridView();
PlanningDataGrid.View = gridView;
gridView.Columns.Add(new GridViewColumn() { Header = "Тип мероприятия", DisplayMemberBinding = new Binding("Key") }); // Создаем первый столбец
var eventTypeList = GetEventTypesList();
foreach (string eventType in eventTypeList)
{
var listViewColumn = new GridViewColumn
{
Header = eventType,
DisplayMemberBinding = new Binding("Value[" + eventType + "]"),
Width = 30,
CellTemplate = GenerateCellTemplate(eventType),
};
gridView.Columns.Add(listViewColumn);
}
}
private DataTemplate GenerateCellTemplate(string eventType)
{
var template = new DataTemplate();
FrameworkElementFactory factory = new FrameworkElementFactory(typeof(CheckBox));
factory.SetBinding(ToggleButton.IsCheckedProperty, new Binding("Value[" + eventType + "]"));
template.VisualTree = factory;
return template;
}
/// <summary>
/// Собирает список типов мероприятий из БД
/// </summary>
/// <returns></returns>
private List<string> GetEventTypesList()
{
using (var db = new IP_dbEntities())
{
return db.EVENTS_TYPE.Select(e => e.event_type.Trim()).ToList();
}
}
}
Have you know any way, how to fix this, or do smth new?
解决方案
Thanks a lot to StepUp and Ilan for helping. I just need to delete this row is code behind:
DisplayMemberBinding = new Binding("Value[" + eventType + "]"),
so, there is a solution:
public partial class Combiner : Window
{
public Combiner()
{
InitializeComponent();
CreateDataGridColumns();
}
private void CreateDataGridColumns()
{
var gridView = new GridView();
PlanningDataGrid.View = gridView;
gridView.Columns.Add(new GridViewColumn() { Header = "Тип мероприятия", DisplayMemberBinding = new Binding("Key") }); // Создаем первый столбец
var eventTypeList = GetEventTypesList();
foreach (string eventType in eventTypeList)
{
Binding binding = new Binding();
var listViewColumn = new GridViewColumn
{
Header = eventType,
Width = 30,
CellTemplate = GenerateCellTemplate(eventType),
};
gridView.Columns.Add(listViewColumn);
}
}
private DataTemplate GenerateCellTemplate(string eventType)
{
FrameworkElementFactory checkbox = new FrameworkElementFactory(typeof(CheckBox));
checkbox.SetBinding(ToggleButton.IsCheckedProperty, new Binding("Value[" + eventType + "]") {Mode = BindingMode.TwoWay});
return new DataTemplate() {VisualTree = checkbox};
}
/// <summary>
/// Собирает список типов мероприятий из БД
/// </summary>
/// <returns></returns>
private List<string> GetEventTypesList()
{
using (var db = new IP_dbEntities())
{
return db.EVENTS_TYPE.Select(e => e.event_type.Trim()).ToList();
}
}
}
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