绑定到集合WPF/VB中的列表
我想知道是否有可能将datagrid列绑定到存储在可观察集合中的(T)列表 以下是我当前的代码:绑定到集合WPF/VB中的列表,wpf,vb.net,datagrid,wpfdatagrid,Wpf,Vb.net,Datagrid,Wpfdatagrid,我想知道是否有可能将datagrid列绑定到存储在可观察集合中的(T)列表 以下是我当前的代码: Dim _BindWithThis As New List(Of BindWithThis) Me.DataContext = _BindWithThis For i = 0 To 3 Dim NewList As New List(Of Double) From {i + 0.25, i + 0.5, i + 0.75} _BindWith
Dim _BindWithThis As New List(Of BindWithThis)
Me.DataContext = _BindWithThis
For i = 0 To 3
Dim NewList As New List(Of Double) From {i + 0.25, i + 0.5, i + 0.75}
_BindWithThis.Add(New BindWithThis() With _
{.InternalNum = i, .DataValue = NewList})
Next
DataGrid1.ItemsSource = _BindWithThis
Dim NC As New DataGridTextColumn
NC.Header = "New Column"
NC.Width = 85
Dim b As New Binding
b.Path = New PropertyPath("DataValue")
NC.Binding = b
DataGrid1.Columns.Add(NC)
当前显示四行“(集合)”。是否可以进入其中一个“收集”行并显示数据?我知道,通过与集合中的特定元素绑定,可以对列表框执行此操作:
ListBox1.ItemsSource = _BindWithThis.Item(0).DataValue
我只是不知道如何用datagrid来实现这一点
谢谢你的帮助
James您需要设置
AutoGenerateColumns=“False”
并自己定义所需的列
下面是一个快速示例,它将在列表框中显示您的收藏,而不是默认的TextBlock
<DataGrid AutoGenerateColumns="False"
ItemsSource="{Binding YourCollection}">
<DataGrid.Columns>
<DataGridTemplateColumn Header="Column Header">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<ListBox ItemsSource="{Binding MySubCollection}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
以下是我承诺的示例。这使用DataGrid.RowDetailsTemplate允许您展开/折叠数据列表。抱歉,这是C#而不是VB.NET
Xaml:
当然,您将使用ObservableCollection并为实际代码实现INotifyPropertyChanged
public class DataGridRowDetails2ViewModel
{
public DataGridRowDetails2ViewModel()
{
Items = new List<DataItemWithDetails>
{
new DataItemWithDetails{ Name = "Item 1"},
new DataItemWithDetails{ Name = "Item 2"},
new DataItemWithDetails{ Name = "Item 3"},
new DataItemWithDetails{ Name = "Item 4"},
};
}
public IList<DataItemWithDetails> Items { get; set; }
public bool IsChecked { get; set; }
}
public class DataItemWithDetails
{
public DataItemWithDetails()
{
Doubles = new List<double> {1, 2, 3, 4};
}
public string Name { get; set; }
public IList<double> Doubles { get; set; }
}
公共类DataGridRowDetails2ViewModel
{
公共DataGridRowDetails2ViewModel()
{
项目=新列表
{
新的DataItemWithDetails{Name=“Item1”},
新DataItemWithDetails{Name=“Item2”},
新的DataItemWithDetails{Name=“Item3”},
新的DataItemWithDetails{Name=“Item4”},
};
}
公共IList项{get;set;}
已检查公共布尔值{get;set;}
}
公共类DataItemWithDetails
{
公共数据项WithDetails()
{
Doubles=新列表{1,2,3,4};
}
公共字符串名称{get;set;}
公共IList双精度{get;set;}
}
您需要调查DataGrid.RowDetailsTemplate。如果没有人能比我强的话,我以后会举出一个例子来。
public partial class DataGridRowDetails2
{
public DataGridRowDetails2()
{
InitializeComponent();
}
private void ToggleButtonChecked(object sender, RoutedEventArgs e)
{
var button = (ToggleButton)sender;
DataGridRow dataGridRow =
(DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(button.DataContext);
dataGridRow.DetailsVisibility =
(button.IsChecked??false) ? Visibility.Visible : Visibility.Collapsed;
}
}
public class DataGridRowDetails2ViewModel
{
public DataGridRowDetails2ViewModel()
{
Items = new List<DataItemWithDetails>
{
new DataItemWithDetails{ Name = "Item 1"},
new DataItemWithDetails{ Name = "Item 2"},
new DataItemWithDetails{ Name = "Item 3"},
new DataItemWithDetails{ Name = "Item 4"},
};
}
public IList<DataItemWithDetails> Items { get; set; }
public bool IsChecked { get; set; }
}
public class DataItemWithDetails
{
public DataItemWithDetails()
{
Doubles = new List<double> {1, 2, 3, 4};
}
public string Name { get; set; }
public IList<double> Doubles { get; set; }
}