[英]Sorting a DataGrid
The order of rows in my DataGrid does not change as it should when I click on a column header. 单击列标题时,DataGrid中的行顺序不会更改,因为它应该更改。 I've implemented a custom sorter and this is the prototype of my Compare-Function, which is successfully being called:
我实现了一个自定义排序器,这是我的Compare-Function的原型,该原型被成功称为:
public int Compare(object x, object y)
{
var rowView1 = x as DataRowView;
var rowView2 = y as DataRowView;
var row1 = rowView1.Row;
var row2 = rowView2.Row;
var row1Id = Convert.ToInt32(row1[0]);
var row2Id = Convert.ToInt32(row2[0]);
if (SortDirection == ListSortDirection.Ascending)
{
return row1Id.CompareTo(row2Id);
}
else
{
return row2Id.CompareTo(row1Id);
}
}
The compare function above seems to work as suggested, it simply compares Ids and in debug mode, I see that the comparisons lead to valid returns ( +1 or -1). 上面的compare函数似乎按建议的方式工作,它只是比较Ids,并且在调试模式下,我发现比较会导致有效的返回值(+1或-1)。 Hower, the order of elements in the datagrid does not change.
但是,数据网格中元素的顺序不会改变。 What am I missing out here?
我在这里错过了什么? I've googled for so long that I'm close to needing glasses.. thanks for any help!
我已经搜索了很长时间,以至于我几乎要戴眼镜了。谢谢您的帮助!
EDIT: the xaml for my grid 编辑:我的网格的XAML
<DataGrid result:CustomSortBehaviour.AllowCustomSort="True"
Name="ResultDataGrid"
IsReadOnly="True"
ItemsSource="{Binding ResultDataTable}">
</DataGrid>
The property you actually need to set is CanUserSortColumns 您实际需要设置的属性是CanUserSortColumns
So set that to true and then if that doesn't work do this. 因此,将其设置为true,然后如果不起作用,请执行此操作。
<DataGrid Sorting="OnDataGridSort"
CanUserSortColumns="True"
Name="ResultDataGrid"
IsReadOnly="True"
ItemsSource="{Binding ResultDataTable}">
</DataGrid>
And then all you need to give the ListcollectionView an instance of your comparer. 然后,您需要为ListcollectionView提供一个比较器的实例。
void OnDataGridSort(object sender, System.Windows.Controls.DataGridSortingEventArgs e)
{
DataGrid dg = sender as DataGrid;
ListCollectionView lcv = (ListCollectionView)CollectionViewSource.GetDefaultView(dg.ItemsSource);
lcv.CustomSort = [Your IComparer instance here];
e.Handled;
}
您是否设置了DataGrid.AllowSorting属性?
Add this to your code 将此添加到您的代码
allowsorting="true"
allowsorting = “真”
You can Use This. 您可以使用它。
<DataGrid allowsorting="true" result:CustomSortBehaviour.AllowCustomSort="True" Name="ResultDataGrid" IsReadOnly="True" ItemsSource="{Binding ResultDataTable}">
</DataGrid>
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