C# 代码中的WPF datagrid火灾排序事件
我有一些代码可以监听datagrid的“排序”事件,以便能够添加自定义排序器 我在加载datagrid后添加这个C# 代码中的WPF datagrid火灾排序事件,c#,wpf,datagrid,C#,Wpf,Datagrid,我有一些代码可以监听datagrid的“排序”事件,以便能够添加自定义排序器 我在加载datagrid后添加这个 grid.Sorting += (sender, args) => { var column = (DataGridCustomTextColumn) args.Column; //i do some custom checking based on column to get the
grid.Sorting += (sender, args) =>
{
var column = (DataGridCustomTextColumn) args.Column;
//i do some custom checking based on column to get the right comparer
//i have different comparers for different columns. I also handle the sort direction
//in my comparer
// prevent the built-in sort from sorting
args.Handled = true;
var direction = (column.SortDirection != ListSortDirection.Ascending)
? ListSortDirection.Ascending
: ListSortDirection.Descending;
//set the sort order on the column
column.SortDirection = direction;
//use a ListCollectionView to do the sort.
var lcv = (ListCollectionView) CollectionViewSource.GetDefaultView(grid.ItemsSource);
//this is my custom sorter it just derives from IComparer and has a few properties
//you could just apply the comparer but i needed to do a few extra bits and pieces
var comparer = new DataGridCommonSort(column.RealDataType, column.SortMemberPath, direction);
//apply the sort
lcv.CustomSort = comparer;
};
问题是,只有在单击columnheader时才会调用此处理程序。
但是我需要一种方法来初始化触发这个事件,以便对数据进行排序
有什么想法吗?
我试过这样的方法:
ICollectionView dataView = CollectionViewSource.GetDefaultView(dataGrid.ItemsSource);
dataView.SortDescriptions.Clear();
dataView.SortDescriptions.Add(new SortDescription(c.SortMemberPath, ListSortDirection.Descending));
dataView.Refresh();
但这对我不起作用。您可以将事件处理程序定义为(非匿名)方法: …并在设置
ItemsSource
属性后调用它:
grid_Sorting(grid, new DataGridSortingEventArgs(grid.Columns[0])); //sort by the first column
更改DefaultView是正确的,这对我进行快速测试很有用。是否将dataGrid.ItemsSource直接设置为数据或其他collectionview?是否确定在调用GetDefaultView之前已设置?你确定c.SortMemberPath是正确的吗?
grid_Sorting(grid, new DataGridSortingEventArgs(grid.Columns[0])); //sort by the first column