WPF DataGrid中（在.NET 4.0中没有工具包），部首排序用的ICollectionView [英] WPF DataGrid (In .NET 4.0 Not Toolkit), Header Sorting with ICollectionView

问题描述

首先让我澄清（如果标题是不够清楚）：我讨论 System.Windows.Controls.DataGrid 从.NET 4.0框架的不可以工具包的版本。的

我目前正在建立一个小型可重复使用的组类/视图模型/等我的项目，以建立一个相当强大的DataGrid我的应用程序。

现在，在默认情况下给予 IEnumarable＆LT;＆GT; 的ItemsSource的DataGrid控件支持标题单击列排序

不过，我实现现在使用 Col​​lectionViewSource 和的ICollectionView 公开数据成员到DataGrid。当以这种方式挂接似乎依赖SortDescriptions排序

虽然我喜欢有从code控制（可挂接到各种各样的东西），我还需要的能力为我的用户点击标题栏来thier结果进行排序。我正在寻找一种方式来勾头栏点击信号我的code键调节 Col​​lectionViewSource 适当。

1. 难道我将不得不重新风格的标题按钮做火的事件？
2. 有没有办法挂钩从DataGrid控件的现有标题排序事件？
3. 什么是去了解这一点的最好方法是什么？
4. 在我使用的ICollectionView 不正确？

解决方案

其实我找到了答案。对我而言一个完整的错误。它源于对列在DataGrid控件设置。

必须确保该 CanUserSort =真设置在的DataGridColumn ，而在 SortMemberPath 属性设置。

例如：

 ＆LT; D​​ataGridTemplateColumn标题=帐号WIDTH =自动CanUserSort =真SortMemberPath =AccountNum＆GT;
                ＆LT; D​​ataGridTemplateColumn.CellTemplate＆GT;
                    ＆LT;的DataTemplate＆GT;
                        ＆LT; TextBlock的文本={结合AccountNum}/＆GT;
                    ＆LT; / DataTemplate中＆GT;
                ＆LT; /DataGridTemplateColumn.CellTemplate>
            ＆LT; / DataGridTemplateColumn＆GT;
 

Firstly let me clarify (if the title wasn't clear enough): I'm discussing System.Windows.Controls.DataGrid from the .NET 4.0 Framework, not the toolkit edition.

I'm currently building up a small re-usable set of classes/view models/etc in my project to build a rather powerfull DataGrid for my application.

Now, by default given an IEnumarable<> ItemsSource the DataGrid control supports header-clicking column sorting.

However, my implementation now uses a CollectionViewSource and ICollectionView to expose data members to the DataGrid. When hooked up in this fashion it seems to rely on the SortDescriptions to sort.

While I like having control from code (could be hooked into all sorts of things) I also require the ability for my users to click the header bars to sort thier results. I'm looking for a way to hook the header-bar clicks to signal my code to adjust the CollectionViewSource appropriately.

1. Am I going to have to re-style the header buttons to do fire the events?
2. Is there a way to hook the sort events from the DataGrid control's existing headers?
3. What is the best way to go about this?
4. Am I using ICollectionView incorrectly?

解决方案

Actually I found the answer. A complete blunder on my part. It stemmed from settings on the Columns in the DataGrid Control.

Had to make sure that CanUserSort="True" was set on the DataGridColumn, and that the SortMemberPath property was set.

Example:

            <DataGridTemplateColumn Header="Account #" Width="Auto" CanUserSort="True" SortMemberPath="AccountNum">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding AccountNum}" />
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

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