<DataGrid
Name="GvHeader"
AutoGenerateColumns="False"
HorizontalScrollBarVisibility="Auto"
CanUserDeleteRows="False"
CanUserAddRows="False"
CanUserResizeColumns="True"
CanUserReorderColumns="False"
CanUserResizeRows="False"
AllowDrop="False"
RowDetailsVisibilityMode="Collapsed"
IsReadOnly="True" ClipboardCopyMode="ExcludeHeader" SelectionMode="Single">
<DataGrid.RowStyle>
<Style TargetType="{x:Type DataGridRow}">
<EventSetter Event="MouseDown" Handler="HeaderRowMouseDown"/>
<EventSetter Event="Unselected" Handler="HeaderRowUnselected"></EventSetter>
</Style>
</DataGrid.RowStyle>
<DataGrid.RowDetailsTemplate>
<DataTemplate>
<DataGrid x:Name="GvLines"
AutoGenerateColumns="False"
HorizontalScrollBarVisibility="Auto"
CanUserDeleteRows="False"
CanUserAddRows="False"
CanUserResizeColumns="True"
CanUserReorderColumns="False"
CanUserResizeRows="False"
AllowDrop="False"
IsReadOnly="True" ClipboardCopyMode="ExcludeHeader" SelectionMode="Single"
ItemsSource="{Binding Path=Lines}">
<DataGrid.Columns>
<DataGridTextColumn
Header="B1"
Binding="{Binding Path=B,Mode=OneWay}"/>
<DataGridTextColumn
Header="B2"
Binding="{Binding Path=BB,Mode=OneWay}"/>
<DataGridTextColumn
Header="B3"
Binding="{Binding Path=BBB,Mode=OneWay}"/>
</DataGrid.Columns>
</DataGrid>
</DataTemplate>
</DataGrid.RowDetailsTemplate>
<DataGrid.Columns>
<DataGridTextColumn
Header="A1"
Binding="{Binding Path=A,Mode=OneWay}"/>
<DataGridTextColumn
Header="A2"
Binding="{Binding Path=AA,Mode=OneWay}"/>
<DataGridTextColumn
Header="A3"
Binding="{Binding Path=AAA,Mode=OneWay}"/>
</DataGrid.Columns>
</DataGrid>public class Header
{
public String A { get; private set; }
public String AA { get; private set; }
public String AAA { get; private set; }
public List<Line> Lines { get; private set; }
public Header(string a, string aa, string aaa,ICollection<Line> lines)
{
A = a;
AA = aa;
AAA = aaa;
Lines = new List<Line>();
if (lines != null && lines.Count > 0)
{
Lines.AddRange(lines);
}
}
}public class Line
{
public String B { get; private set; }
public String BB { get; private set; }
public String BBB { get; private set; }
public Line(string b, string bb, string bbb)
{
B = b;
BB = bb;
BBB = bbb;
}
}public partial class MainWindow : Window
{
public List<Header> header;
public MainWindow()
{
InitializeComponent();
//заполняем тестовыми данными
header = new List<Header>
{
new Header("a1", "a2", "a3", new List<Line>
{
new Line("a", "b", "c"),
new Line("d", "1", "2")
}),
new Header("a11", "a22", "a33", new List<Line>
{
new Line("b1", "b2", "b3"),
new Line("b11", "b2222", "b333"),
new Line("b1111", "b22", "b3"),
new Line("dsxfds", "sdfsdf", "sfsdf")
}),
new Header("a1", "a2", "a3", new List<Line>
{
new Line("bb1", "b1", "ab"),
new Line("bb2", "b2", "bb"),
new Line("bb3", "b3", "cb")
}),
};
GvHeader.ItemsSource = header;//связываем главную табличку с нашими данными
}
//собитие, которое происходит при RowUnselected (тоесть когда выделение строки пропадает)-прячет подтаблицу
private void HeaderRowUnselected(object sender, RoutedEventArgs e)
{
if (sender == null)
{
return;
}
var row = (DataGridRow)sender;
row.DetailsVisibility = Visibility.Collapsed;
}
//собитие, которое происходит при MouseDown-показывает подтаблицу
private void HeaderRowMouseDown(object sender, MouseButtonEventArgs e)
{
if (sender == null)
{
return;
}
var row = (DataGridRow)sender;
row.DetailsVisibility = row.DetailsVisibility == Visibility.Collapsed ? Visibility.Visible : Visibility.Collapsed;
}
}
<Window x:Class="WpfApplication1.MainWindow"
xmlns="<a href="http://schemas.microsoft.com/winfx/2006/xaml/presentation">http://schemas.microsoft.com/winfx/2006/xaml/presentation</a>"
xmlns:x="<a href="http://schemas.microsoft.com/winfx/2006/xaml">http://schemas.microsoft.com/winfx/2006/xaml</a>"
xmlns:wpfApplication1="clr-namespace:WpfApplication1"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<ResourceDictionary>
<wpfApplication1:ConverterNull x:Key="ConverterNull"/>
</ResourceDictionary>
</Window.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="30"></RowDefinition>
<RowDefinition Height="5"></RowDefinition>
<RowDefinition Height="30"></RowDefinition>
</Grid.RowDefinitions>
<ComboBox Name ="cmb" DisplayMemberPath="Value" SelectedValuePath = "id" ></ComboBox>
<TextBox Name="tb" Grid.Row="2" Text="{Binding ElementName=cmb, Path=SelectedItem.Value,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged,Converter={StaticResource ConverterNull}}"></TextBox>
</Grid>
</Window><Window.Resources>
<ResourceDictionary>
<wpfApplication1:ConverterNull x:Key="ConverterNull"/>
</ResourceDictionary>
</Window.Resources>using System;
using System.Collections.Generic;
using System.Globalization;
using System.Windows;
using System.Windows.Data;
namespace WpfApplication1
{
public partial class MainWindow : Window
{
private List<Info> info;
public MainWindow()
{
InitializeComponent();
info = new List<Info>
{
new Info("a"),
new Info("b"),
new Info("c")
};
cmb.ItemsSource = info;
}
}
public class Info
{
public Guid id { get; private set; }
public string Value { get; set; }
public Info(String val)
{
id = Guid.NewGuid();
Value = val;
}
}
sealed class ConverterNull : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return value;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return value == null ? null : String.IsNullOrWhiteSpace(value.ToString()) ? null : value;
}
}
}