更改AutoGeneratingColumn中的DataGrid列显示值

问题描述

我有 dataGrid.ItemsSource 绑定到EntityItem列表 Client ，其中包含另一个EntityItem Company .

I have dataGrid.ItemsSource bound to a list of EntityItem, Client, that containt another EntityItem, Company.

当显示我的 dataGrid 时，在我的 Company 列中，我具有对象的类型( System.Data.Entity....)我想显示我的 Company.Name .

When my dataGrid is displayed, in my Company Column, I have the type of my object (System.Data.Entity. ...) I would like instead to display my Company.Name.

在WindowsForm中，我可以这样做:

In WindowsForm I could just do :

e.Value = ((Company)(dgv["Company", e.RowIndex].Value)).Name;

但是我找不到在WPF中正确执行操作的方法.

But I can't find a way to do in properly in WPF.

现在我有:

private void dataGridUsers_AutoGeneratingColumn_1(object sender, DataGridAutoGeneratingColumnEventArgs e)
    {

        DataGrid dgv = (DataGrid)sender;
        if (e.PropertyName == "Company")
        {
            if (e.PropertyType == typeof(Company))
            {
                ...
            }
        }
    }

所以我可以确保我在正确的列上，但是现在我被卡住了，我不知道如何更改我希望该列显示数据的方式...我尝试查看 e.PropertyDescriptor ，但这仅是为了获取属性.

So I can make sure I'm on the right column, but now I'm stuck, I don't know how to change the way I want the column to display the data ...I tried to look into e.PropertyDescriptor but it's only to Get the properties.

推荐答案

DataGridAutoGeneratingColumnEventArgs 对象具有 Column 属性，该属性包含一个生成的 DataGridColumn 实例.具体类型为 DataGridTextColumn ，它具有 Binding 属性.

DataGridAutoGeneratingColumnEventArgs object has Column property which contains a generated DataGridColumn instance. Concrete type is DataGridTextColumn, which has Binding property.

您可以更改绑定路径以使用 Column.Name 属性

You can change binding path to work with Column.Name property

private void DataGridOnAutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
{
    if (e.PropertyName == "Company")
    {
        var c = (DataGridTextColumn)e.Column;
        var b = (Binding)c.Binding;
        b.Path = new PropertyPath("Company.Name");
    }
}

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