.XAML
DataContext="{DynamicResource ViewModelCombine}">
<Window.Resources>
<vm:ViewModelCombine x:Key="ViewModelCombine"/>
</Window.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<DataGrid x:Name="grd">
<DataGrid.ItemsSource>
<CompositeCollection>
<CollectionContainer Collection="{Binding Source={StaticResource ViewModelCombine}, Path=MergedSource}"/>
</CompositeCollection>
</DataGrid.ItemsSource>
<DataGrid.Columns>
<DataGridTextColumn Header="AMP" Binding="{Binding AMP}" Width="100"/>
<DataGridTextColumn Header="PW" Binding="{Binding PW}" Width="100" />
<DataGridTextColumn Header="DZ0" Binding="{Binding DZ0}" Width="100" />
<DataGridTextColumn Header="DELTA" Binding="{Binding DELTA}" Width="100" />
<DataGridTextColumn Header="DZ1" Binding="{Binding DZ1}" Width="100"/>
<DataGridTextColumn Header="M" Binding="{Binding M_View}" Width="100" />
<DataGridTextColumn Header="DZ2" Binding="{Binding DZ2}" Width="100" />
<DataGridTextColumn Header="N" Binding="{Binding N}" Width="100" />
</DataGrid.Columns>
</DataGrid>
</Grid>
.Xaml.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
ViewModelCombine VMC = new ViewModelCombine();
grd.DataContext = VMC;
}
}
ViewModelCombine.cs
public class ViewModelCombine
{
private ObservableCollection<TherapyTiming> secondsource;
public ObservableCollection<TherapyTiming> SecondSource
{
get { return secondsource; }
set { secondsource = value; }
}
private ObservableCollection<PulseTiming> firstsource;
public ObservableCollection<PulseTiming> FirstSource
{
get { return firstsource; }
set { firstsource = value; }
}
private CompositeCollection mergedSource;
public CompositeCollection MergedSource
{
get { return mergedSource; }
set { mergedSource = value; OnPropertyChanged("MergedSource"); }
}
public ViewModelCombine()
{
var secondinfo = new ViewModelTherapy();
SecondSource = secondinfo;
var firstinfo = new ViewModelPulse();
FirstSource = firstinfo;
mergedSource = new CompositeCollection();
CollectionContainer collection1 = new CollectionContainer() { Collection = SecondSource };
CollectionContainer collection2 = new CollectionContainer() { Collection = FirstSource };
mergedSource.Add(collection1);
mergedSource.Add(collection2);
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string name)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(name));
}
}
}
使用CompositeCollection将Datagrid绑定到MergedCollection作为itemsource时发出问题...显示两行而不是一行的数据并检查输出here。
要求是在一行中显示所有列......! 感谢。
答案 0 :(得分:0)
确定。问题出在下面的代码中
mergedSource.Add(collection1);
mergedSource.Add(collection2);
此代码创建一个包含两个集合的唯一项目的列表,而不合并其属性。这就是为什么你的链接上有输出的原因。
而不是这样做我会建议以下解决方案
ObservableCollection<Newobject>
在同一个列表中添加了collection1和collection2中的项目,我会根据它们的ID合并(复制所有属性)collection1和collection2中的每个项目(如果你没有id属性,请添加它们)它将帮助您识别colelctions与Newobject之间的联系。
确保将数据网格绑定到新集合(itemsource)
该方法会在每个项目的一行中显示您的商品。但是,如果不将属性合并到新对象中,则无法做到这一点。
更新:工作样本
代码:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
ViewModelCombine VMC = new ViewModelCombine();
VMC.VP.Add(new ViewModelPulse() { ID = 1, Name = "test1", xaxa = "xaxa" });
VMC.VT.Add(new ViewModelTherapy() { ID = 1, Name = "test1", Description = "desc" });
VMC.VP.Add(new ViewModelPulse() { ID = 2, Name = "test2", xaxa = "xaxa2" });
VMC.VT.Add(new ViewModelTherapy() { ID =2, Name = "test2", Description = "desc2" });
VMC.BuildSource();
this.DataContext = VMC;
}
}
public class ViewModelCombine
{
public ObservableCollection<ViewCommon> Source { get; set; }
public void BuildSource()
{
Source.Clear();
foreach(var itm in VT)
{
var itmF = VP.FirstOrDefault(x => x.ID == itm.ID);
if(itmF != null)
{
Source.Add(new ViewCommon() {
ID = itm.ID,
Description = itm.Description,
Name = itm.Name,
xaxa = itmF.xaxa
});
}
}
}
public ObservableCollection<ViewModelTherapy> VT { get; set; }
public ObservableCollection<ViewModelPulse> VP { get; set; }
public ViewModelCombine()
{
Source = new ObservableCollection<ViewCommon>();
VT = new ObservableCollection<ViewModelTherapy>();
VP = new ObservableCollection<ViewModelPulse>();
}
}
public class ViewCommon
{
public int ID { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string xaxa { get; set; }
}
public class ViewModelTherapy
{
public int ID { get; set; }
public string Name { get; set; }
public string Description { get; set; }
}
public class ViewModelPulse
{
public int ID { get; set; }
public string Name { get; set; }
public string xaxa { get; set; }
}
的Xaml:
<Window.Resources>
<CollectionViewSource x:Key="ViewSource1" Source="{Binding Source}"/>
<CompositeCollection x:Key="CombinedCollection">
<CollectionContainer Collection="{Binding Source={StaticResource ViewSource1}}" />
</CompositeCollection>
</Window.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<DataGrid ItemsSource="{StaticResource CombinedCollection}">
<DataGrid.Columns>
<DataGridTextColumn Header="ID" Binding="{Binding ID}" Width="100"/>
<DataGridTextColumn Header="Name" Binding="{Binding Name}" Width="100" />
<DataGridTextColumn Header="xaxa" Binding="{Binding xaxa}" Width="100" />
<DataGridTextColumn Header="Description" Binding="{Binding Description}" Width="100" />
</DataGrid.Columns>
</DataGrid>
</Grid>
截图: