首页 \ 问答 \ 我如何使用LINQ返回一个国家列表,但将某个特定国家放在顶部?(How can I use LINQ to return a list of Countries but place a particular country aribitrarly at the top?)

我如何使用LINQ返回一个国家列表,但将某个特定国家放在顶部?(How can I use LINQ to return a list of Countries but place a particular country aribitrarly at the top?)

我有一张表格,其中包含我用来填充下拉列表的国家/地区列表。

我如何构建一个LINQ查询,以便按照字母顺序返回该表中的国家/地区列表,除了将美国置于顶端?

所以,如果表格包含:

瑞典
美国
墨西哥
丹麦

它会返回:

美国
丹麦
墨西哥
瑞典


I have a table with a list of countries in it that I'm using to populate a dropdown.

How can I construct a LINQ query so it will return the list of countries from that table in alphabetical order, with the exception of placing USA at the top?

So, if the table contained:

Sweden
USA
Mexico
Denmark

It would return:

USA
Denmark
Mexico
Sweden

?


原文:https://stackoverflow.com/questions/989290
更新时间:2022-02-07 21:02

最满意答案

我现在这样做了:

[libraryCell.myView bind:@"amount"
                toObject:libraryCell
             withKeyPath:@"objectValue.amount"
                 options:nil];

[libraryCell.myView bind:@"max"
                toObject:_librariesController
             withKeyPath:@"arrangedObjects.@max.amount"
                 options:nil];

因此myView中有两个属性(数量和最大值),当它们中的任何一个发生变化时,我会进行计算并相应地更新显示。


I've now done this like so:

[libraryCell.myView bind:@"amount"
                toObject:libraryCell
             withKeyPath:@"objectValue.amount"
                 options:nil];

[libraryCell.myView bind:@"max"
                toObject:_librariesController
             withKeyPath:@"arrangedObjects.@max.amount"
                 options:nil];

There are thus two properties in myView (amount and max) and when either of them change I do the calculation and update the display accordingly.

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