排序列表< T>在< U>类型的成员上在运行时决定。 [英] Sorting List<T> on a member of type<U> decided at runtime.

问题描述

我有一个类型的客户为

I have a type Customer as

Class Customer
{
    string Name;
    Address address;
    ...
}

和班级地址为

And class Address as

Class Address
{
    string Street;
    int HouseNum;
    ....
}

我创建了一个客户列表

I am creating a list of Customer as

List<Customer> CustSource= new List<Customer>();

然后我将CustSource绑定到转发器。

Repeater有一个名为'Street'的列绑定了`CustSource.address.Street`，'House Number'绑定了`CustSource.address.HouseNum`，'Name'绑定了`CustSource.Name`等等。

我想在运行时对绑定源进行排序，即CustSource。我知道当我在编译时知道成员时，它可以作为CustSource.OrderBy（x => x.Name）完成。为了确定成员在运行时进行排序，我在本文的帮助下编写了一个扩展方法： http://stackoverflow.com/questions/307512/how-do-i-apply-orderby-on -an-iqueryable-a-string-column-name-in-a-gene [ ^ ]



问题是，当我在Customer类的原始属性上对它进行排序时，如'Name'，它工作正常，但我怎样才能对CustSource的`Address.Street`属性进行排序？

Then I bind CustSource to a repeater.
Repeater have a column named 'Street' bound with `CustSource.address.Street`, 'House Number' bound with `CustSource.address.HouseNum`, 'Name' bound with `CustSource.Name` and so on.
I want to sort the the binding source i.e. CustSource at runtime. I know it could be done as CustSource.OrderBy(x=> x.Name) when I know the member at compile time. TO decide the member to sort on at runtime, I have written an extension method with the help of this article: http://stackoverflow.com/questions/307512/how-do-i-apply-orderby-on-an-iqueryable-using-a-string-column-name-within-a-gene[^]

Problem is, When I sort it on the primitive property of Customer class like 'Name', it works fine, but how can I sort on the `Address.Street` property of CustSource?

推荐答案

如果是关于各种整理顺序，你可以使用appr如对没有整理顺序的C＃集合进行排序中所述[ ^ ]。

干杯

Andi

If it's about having various collating sequences, you might use the approach as described in Sorting C# collections that have no collating sequence[^].
Cheers
Andi

这篇关于排序列表< T>在< U>类型的成员上在运行时决定。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！