WPF中DataGrid的预排序

假设您谈论的是WPF Toolkit DataGrid控件,您只需要设置 the CanUserSortColumns property 为true,然后设置 the SortMemberPath property

<Window.Resources>
    <CollectionViewSource x:Key="MyItemsViewSource" Source="{Binding MyItems}">
        <CollectionViewSource.SortDescriptions>
           <scm:SortDescription PropertyName="MyPropertyName"/>
        </CollectionViewSource.SortDescriptions>
    </CollectionViewSource>
</Window.Resources>

<DataGrid ItemsSource="{StaticResource MyItemsViewSource}">

</DataGrid>

“scm”名称空间前缀映射到System。SortDescription类所在的ComponentModel。

xmlns:scm="clr-namespace:System.ComponentModel;assembly=WindowsBase"

我认为有足够多的人从这篇文章中得到了帮助,这条被投票支持的评论应该包含在这个答案中:

我必须用这个来让它工作:

<DataGrid ItemsSource="{Binding Source={StaticResource MyItemsViewSource}}">

我知道这是一篇旧文章,但除了Drew Marsh的回答之外,为了回应DanM关于列标题箭头未出现的问题……您需要将SortDirection属性添加到DataGridColumn中:

<DataGridTextColumn Header="Name" Binding="{Binding Name}" SortDirection="Ascending" />

我发布了一个关于这个的问题,几天后找到了答案:

ColumnHeader arrows not reflected when sorting a DataGrid in XAML

当您看到Items Source不支持CollectionViewSource异常时,可以将DataGrid的DataContext设置为“MyItems ViewSource”,并将Items Source设置为{Binding},如下所示:

<DataGrid DataContext="{StaticResource MyItemsViewSource}" ItemsSource="{Binding}">
</DataGrid>

当你看到 ItemsSource doesn't support CollectionViewSource 例外情况下,您可以在将集合引用到DataGrid之前按Linq对其进行排序:

ObservableCollection<MyDataClass> myCollection = new ObservableCollection<MyDataClass>();
dataGrid.ItemsSource = from item in myCollection orderby item select item;

你必须实施 IComparable 接口 MyDataClass :

public class MyDataClass : IComparable<MyDataClass> {
    public int CompareTo(Classified other) {
        return other.Value.CompareTo(this.Value); // DESC
        return this.Value.CompareTo(other.Value); // ASC
    }
}

这对我有效。

ListSortDirection sortDirection;
int selectedColumnIndex;
private void customerDataGrid_Sorting(object sender, DataGridSortingEventArgs e)
{
    selectedColumnIndex = e.Column.DisplayIndex;
    sortDirection = (e.Column.SortDirection == ListSortDirection.Ascending ? ListSortDirection.Descending: ListSortDirection.Ascending);
}

private void applySortDescriptions(ListSortDirection listSortDirection)
{
    //Clear current sort descriptions 
    customerDataGrid.Items.SortDescriptions.Clear();

    //Get property name to apply sort based on desired column 
    string propertyName = customerDataGrid.Columns[selectedColumnIndex].SortMemberPath;

    //Add the new sort description 
    customerDataGrid.Items.SortDescriptions.Add(new SortDescription(propertyName, listSortDirection));

    //apply sort 
    applySortDirection(listSortDirection);

    //refresh items to display sort 
    customerDataGrid.Items.Refresh();
}

private void applySortDirection(ListSortDirection listSortDirection)
{
    customerDataGrid.Columns[selectedColumnIndex].SortDirection = listSortDirection;
}