我想在WPF中创建一个DataGrid
控件,在每行的第一个单元格中添加一个按钮。点击该按钮将显示RowDetailsTemplate
或子行。
如何添加一个按钮来显示/隐藏RowDetailsTemplate
?
首先创建一个 DataGridTemplateColumn
来包含该按钮:
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Click="ShowHideDetails">Details</Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
当按钮被点击时,更新包含的 DataGridRow
的 DetailsVisibility
属性:
void ShowHideDetails(object sender, RoutedEventArgs e)
{
for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual)
if (vis is DataGridRow)
{
var row = (DataGridRow)vis;
row.DetailsVisibility =
row.DetailsVisibility == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible;
break;
}
}
看一下这个:
XAML:
<DataGrid Name="DataGrid1">
<DataGrid.Columns>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Click="ChangeText">Show/Hide</Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
方法:
private void ChangeText(object sender, RoutedEventArgs e)
{
DemoModel model = (sender as Button).DataContext as DemoModel;
model.DynamicText = (new Random().Next(0, 100).ToString());
}
类别:
class DemoModel : INotifyPropertyChanged
{
protected String _text;
public String Text
{
get { return _text; }
set { _text = value; RaisePropertyChanged("Text"); }
}
protected String _dynamicText;
public String DynamicText
{
get { return _dynamicText; }
set { _dynamicText = value; RaisePropertyChanged("DynamicText"); }
}
public event PropertyChangedEventHandler PropertyChanged;
public void RaisePropertyChanged(String propertyName)
{
PropertyChangedEventHandler temp = PropertyChanged;
if (temp != null)
{
temp(this, new PropertyChangedEventArgs(propertyName));
}
}
}
初始化代码:
ObservableCollection<DemoModel> models = new ObservableCollection<DemoModel>();
models.Add(new DemoModel() { Text = "Some Text #1." });
models.Add(new DemoModel() { Text = "Some Text #2." });
models.Add(new DemoModel() { Text = "Some Text #3." });
models.Add(new DemoModel() { Text = "Some Text #4." });
models.Add(new DemoModel() { Text = "Some Text #5." });
DataGrid1.ItemsSource = models;
<DataGrid x:Name="dgv_Students" AutoGenerateColumns="False"
ItemsSource="{Binding People}" Margin="10,20,10,0"
Style="{StaticResource AzureDataGrid}" FontFamily="B Yekan"
Background="#FFB9D1BA">
<DataGrid.Columns>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Click="RowButton_Click">Text</Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
private IEnumerable<DataGridRow> GetDataGridRowsForButtons(DataGrid grid)
{
//IQueryable
if (!(grid.ItemsSource is IEnumerable itemsSource))
yield return null;
foreach (var item in itemsSource)
{
var row = grid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;
if (null != row & row.IsSelected)
yield return row;
}
}
private void RowButton_Click(object sender, RoutedEventArgs e)
{
for (var vis = sender as Visual; vis != null; vis = VisualTreeHelper.GetParent(vis) as Visual)
if (vis is DataGridRow)
{
// var row = (DataGrid)vis;
var rows = GetDataGridRowsForButtons(dgv_Students);
string id;
foreach (DataGridRow dr in rows)
{
id = (dr.Item as tbl_student).Identification_code;
MessageBox.Show(id);
break;
}
break;
}
}
点击按钮后,该行的ID将返回给您,您可以将其用于按钮名称。
命令
,你可以使用下面的示例作为基础。<DataGridTemplateColumn
Header="Action"
>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button
VerticalAlignment="Top"
Command="{Binding DataContext.MyCommand, RelativeSource={RelativeSource FindAncestor,
AncestorLevel=1, AncestorType={x:Type UserControl}}}"
CommandParameter="{Binding .}"
Content="Delete">
</Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
检查您的AncestorTyp
是否与绑定您的ViewModel
的父视图匹配。