[英]Datagrid column Sorting generating error
I have a datagrid column whose column values are databound.我有一个数据网格列,其列值是数据绑定的。 I have used DataGridTemplateColumn and i need to use sorting in this column.
我使用了 DataGridTemplateColumn 并且我需要在此列中使用排序。
my:DataGridTemplateColumn SortMemberPath="FileName" Header="Name" IsReadOnly="True" MinWidth="150"
It works and sorts the data but when I edit the data after sorting, I need to re-generate the data in the column.它可以工作并对数据进行排序,但是当我在排序后编辑数据时,我需要重新生成列中的数据。
FileListingGrid.ItemsSource = listFiles1;
But this generates "'Sorting' is not allowed during an AddNew or EditItem transaction. "但这会生成“在 AddNew 或 EditItem 事务期间不允许‘排序’。”
It works fine when column data is not sorted but whenever i sort the data and have to re-generate the column data, it throws the following error.当列数据未排序时它工作正常,但每当我对数据进行排序并必须重新生成列数据时,它都会引发以下错误。
There are two ways to resolve this issue有两种方法可以解决这个问题
1) CommitNew() and CommitEdit() before custom sort 1) 自定义排序前的 CommitNew() 和 CommitEdit()
private void DataGrid_ParametersList_Sorting(object sender, DataGridSortingEventArgs e)
{
DataGridColumn column = e.Column;
//prevent the built-in sort from sorting
e.Handled = true;
ListSortDirection 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.
ListCollectionView lcv = (ListCollectionView)CollectionViewSource.GetDefaultView(DataGrid_ParametersList.ItemsSource);
ParametersListComparer customComparer = new ParametersListComparer();
customComparer.SortDirection = direction;
customComparer.SortMemeberPath = column.SortMemberPath;
if (lcv.IsAddingNew)
lcv.CommitNew();
if (lcv.IsEditingItem)
lcv.CommitEdit();
//apply the sort
lcv.CustomSort = customComparer;
}
2) Another way is Make a Data grid read only. 2)另一种方法是使数据网格只读。
<my:DataGrid x:Name="DataGrid"
IsReadOnly="True"
Sorting="DataGrid_Sorting">
After ListCollectiontView.AddNewItem( item );
在
ListCollectiontView.AddNewItem( item );
do not forget ListCollectiontView.CommitNew();
不要忘记
ListCollectiontView.CommitNew();
This method ends the add transaction and saves the pending new item.此方法结束添加事务并保存挂起的新项目。 Same for
CommitEdit()
与
CommitEdit()
相同
您可以使用 CollectionViewSource 并指定您的 SortMemberPath(在您的情况下为“文件名”)作为 SortDescription 吗?
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