private void self_Loaded(object sender, RoutedEventArgs e)
{
if (FilterHost == null)
{
// Find the ancestor column header and data grid controls.
ColumnHeader = this.FindAncestorOrSelf <DataGridColumnHeader>();
if (ColumnHeader == null)
{
throw new InvalidOperationException("DataGridFilterColumnControl must be a child element of a DataGridColumnHeader.");
}
DataGrid = ColumnHeader.FindAncestorOrSelf <DataGrid>();
if (DataGrid == null)
{
throw new InvalidOperationException("DataGridColumnHeader must be a child element of a DataGrid");
}
// Find our host and attach ourself.
FilterHost = DataGrid.GetFilter();
}
FilterHost.AddColumn(this);
DataGrid.SourceUpdated += DataGrid_SourceOrTargetUpdated;
DataGrid.TargetUpdated += DataGrid_SourceOrTargetUpdated;
DataGrid.RowEditEnding += DataGrid_RowEditEnding;
// Must set a non-null empty template here, else we won't get the coerce value callback when the columns attached property is null!
Template = _emptyControlTemplate;
// Bind our IsFilterVisible and Template properties to the corresponding properties attached to the
// DataGridColumnHeader.Column property. Use binding instead of simple assignment since columnHeader.Column is still null at this point.
var isFilterVisiblePropertyPath = new PropertyPath("Column.(0)", DataGridFilterColumn.IsFilterVisibleProperty);
BindingOperations.SetBinding(this, VisibilityProperty, new Binding()
{
Path = isFilterVisiblePropertyPath, Source = ColumnHeader, Mode = BindingMode.OneWay, Converter = _booleanToVisibilityConverter
});
var templatePropertyPath = new PropertyPath("Column.(0)", DataGridFilterColumn.TemplateProperty);
BindingOperations.SetBinding(this, TemplateProperty, new Binding()
{
Path = templatePropertyPath, Source = ColumnHeader, Mode = BindingMode.OneWay
});
var filterPropertyPath = new PropertyPath("Column.(0)", DataGridFilterColumn.FilterProperty);
BindingOperations.SetBinding(this, FilterProperty, new Binding()
{
Path = filterPropertyPath, Source = ColumnHeader, Mode = BindingMode.TwoWay
});
}
private void DataGridFilterColumnControl_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
if (FilterHost == null)
{
// Find the ancestor column header and data grid controls.
ColumnHeader = this.FindColumnHeader <DataGridColumnHeader>();
if (ColumnHeader == null)
{
throw new InvalidOperationException("DataGridFilterColumnControl must be a child element of a DataGridColumnHeader.");
}
DataGrid = ColumnHeader.FindColumnHeader <DataGrid>();
if (DataGrid == null)
{
throw new InvalidOperationException("DataGridColumnHeader must be a child element of a DataGrid");
}
// Find our host and attach ourself.
FilterHost = DataGrid.GetFilter();
}
Template = _emptyControlTemplate;
var isFilterVisiblePropertyPath = new PropertyPath("Column.(0)", DataGridFilterColumn.IsFilterVisibleProperty);
BindingOperations.SetBinding(this, VisibilityProperty, new Binding()
{
Path = isFilterVisiblePropertyPath, Source = ColumnHeader, Mode = BindingMode.OneWay, Converter = _booleanToVisibilityConverter
});
var templatePropertyPath = new PropertyPath("Column.(0)", DataGridFilterColumn.TemplateProperty);
BindingOperations.SetBinding(this, TemplateProperty, new Binding()
{
Path = templatePropertyPath, Source = ColumnHeader, Mode = BindingMode.OneWay
});
var filterPropertyPath = new PropertyPath("Column.(0)", DataGridFilterColumn.FilterProperty);
BindingOperations.SetBinding(this, FilterProperty, new Binding()
{
Path = filterPropertyPath, Source = ColumnHeader, Mode = BindingMode.TwoWay
});
//1.获取datagridcolumnheader中Column是什么类型
//2.根据不同的类型修改自己的样式
//ColumnHeader = this.FindColumnHeader<DataGridColumnHeader>();
//if (ColumnHeader == null)
// throw new Exception();
var template = ColumnHeader.Column.GetType();
if (template == typeof(DataGridCheckBoxColumn))
{
var tem = this.FindResource("DataGridCheckBoxColumn") as ControlTemplate;
var count = VisualTreeHelper.GetChildrenCount(new CheckBox());
// CheckBox c = VisualTreeHelper.GetChild(new CheckBox()) as CheckBox;
// CheckBox c = tem.c("_chebox_",new Grid()) as CheckBox;
// BindingOperations.SetBinding(c, CheckBox.IsCheckedProperty, new Binding(nameof(FilterValues)) { Source = this });
this.Template = tem;
this.Visibility = FilterHost._isFilteringVisibility ? Visibility.Visible : Visibility.Hidden;
}
else
{
this.Template = this.FindResource("DataGridTextColumn") as ControlTemplate;
this.Visibility = FilterHost._isFilteringVisibility ? Visibility.Visible : Visibility.Hidden;
}
FilterHost.AddColumn(this);
}