WPF Datagrid綁定到組合框和文本框

Question

我需要您的WPF Datagrid的幫助。 我在平臺上看了一些回答的問題，並做了類似的事情，但無法解決一些問題。

我已經結構命名爲表

public struct Table 
{ 
    public string Name { get; set; } 
    public int Value { get; set; } 
} 

和類名爲室

public class Room : INotifyPropertyChanged 
{ 
    public string strRoomlName; 
    public string Name 
    { 
     get { return strRoomlName; } 
     set { strRoomlName = value; } 
    }    
    public ObservableCollection<Table> tbTables = new ObservableCollection<Table>(); 
    public ObservableCollection<Table> PrpTables 
    { 
     get { return tbTables; } 
     set 
     { 
      tbTables = value; 
      OnPropertyChanged("PrRawValues"); 
      if (value != null && value.Count > 0) 
      { 
       PrpSelectedTable = value.First(); 
      } 
     } 
    } 
    private Table selectedTable; 
    public Table PrpSelectedTable 
    { 
     get 
     { 
      return selectedTable; 
     } 
     set 
     { 
      selectedTable = value; 
      OnPropertyChanged("PrpSelectedTable"); 
      ComboValue = value.Value; 
      OnPropertyChanged("ComboValue");  
     } 
    } 
    public int ComboValue 
    { 
     get; 
     set; 
    }   
    public event PropertyChangedEventHandler PropertyChanged; 
    protected virtual void OnPropertyChanged(string propertyName) 
    { 
     PropertyChangedEventHandler handler = PropertyChanged; 
     if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName)); 
    }  
} 

而且主類如下，

public partial class MainWindow : Window 
{ 
    ObservableCollection<Room> rooms; 
    public MainWindow() 
    { 
     InitializeComponent(); 
     rooms = new ObservableCollection<Room>(); 

     Table t1 = new Table { Name = "Table #1", Value = 0 }; 
     Table t2 = new Table { Name = "Table #2", Value = 3 }; 
     Table t3 = new Table { Name = "Table #3", Value = 5 }; 
     Table t4 = new Table { Name = "Table #4", Value = 2 }; 

     Room rm1 = new Room(); 
     rm1.Name = "Small Hall"; 
     rm1.tbTables.Add(t1); 
     rm1.tbTables.Add(t2); 
     rm1.tbTables.Add(t3); 
     rm1.tbTables.Add(t4); 
     rooms.Add(rm1); 

     Table t21 = new Table { Name = "Table #1", Value = 0 }; 
     Table t22 = new Table { Name = "Table #2", Value = 3 }; 
     Table t23 = new Table { Name = "Table #3", Value = 5 }; 
     Table t24 = new Table { Name = "Table #4", Value = 12 }; 
     Table t25 = new Table { Name = "Table #5", Value = 8 }; 
     Table t26 = new Table { Name = "Table #6", Value = 3 }; 
     Table t27 = new Table { Name = "Table #7", Value = 20 }; 


     Room rm2 = new Room(); 
     rm2.Name = "Main Hall"; 
     rm2.tbTables.Add(t21); 
     rm2.tbTables.Add(t22); 
     rm2.tbTables.Add(t23); 
     rm2.tbTables.Add(t24); 
     rm2.tbTables.Add(t25); 
     rm2.tbTables.Add(t26); 
     rm2.tbTables.Add(t27); 
     rooms.Add(rm2); 


     this.gridSignals.DataContext = rooms; 
    } 

XAML佈局：

<Window 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:Custom="http://schemas.microsoft.com/winfx/2006/xaml/presentation/ribbon" x:Class="BindingReiview.MainWindow" 
    Title="MainWindow" Height="320" Width="396"> 
<StackPanel Height="266" VerticalAlignment="Top" Margin="0,0,2,0"> 
    <DataGrid ItemsSource="{Binding}" Name="gridSignals" CanUserAddRows="False" AutoGenerateColumns="False"> 
     <DataGrid.Columns> 
      <DataGridTextColumn Header=" Room " Binding="{Binding Name}" Width="110"/> 
      <DataGridTemplateColumn Header=" Tables " Width="100" > 
       <DataGridTemplateColumn.CellTemplate> 
        <DataTemplate> 
         <ComboBox ItemsSource="{Binding PrpTables, Mode=TwoWay}" SelectedIndex="0" SelectedItem="{Binding PrpSelectedTable, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" 
          DisplayMemberPath="Name" Name="cmbVal" ></ComboBox> 
        </DataTemplate> 
       </DataGridTemplateColumn.CellTemplate> 
      </DataGridTemplateColumn> 
      <DataGridTemplateColumn Header=" Geust(s)" Width="100"> 
       <DataGridTemplateColumn.CellTemplate> 
        <DataTemplate> 
         <TextBox Text="{Binding ComboValue}"/> 
        </DataTemplate> 
       </DataGridTemplateColumn.CellTemplate> 
      </DataGridTemplateColumn>    
     </DataGrid.Columns> 
    </DataGrid> 
</StackPanel> 

ObservableCollection綁定到網格的DataSource。 Combobox項目綁定到Room，其中有ObservableCollection。 當選擇表格時，賓客人數將顯示爲文本框。由於文本框文本綁定到ComboValue（Combobox.SelectedItem）。

所以，我需要改變選定表的客人。例如（圖中），表＃5中的值爲8，需要通過編輯文本框來更改。

歡迎任何幫助和建議！

Answer 1

您是否希望更新所選表格中變量屬性Value的值（代碼/示例圖片中的變量t25）？在這種情況下，您可以直接綁定到該值。

{Binding PrpSelectedTable.Value, Mode=TwoWay} 

這將更新所選表中的值。 我也建議讓表執行INotifyPropertyChanged接口。這樣，如果表格的值或名稱屬性發生變化，顯示器將自動更新。希望有幫助。