有没有办法在LINQ查询语法中使用Distinct? [英] Is there way to use Distinct in LINQ query syntax?

问题描述

是否可以重写:

var tbl = ds.TABLES;
var q = from c in tbl
        select c.TABLE_TYPE;
string s = "";
foreach (var item in q.Distinct())
{
    s += "[" + item + "]";
}        
MessageBox.Show(s);

这样Distinct()调用就在LINQ查询中了吗?

So that the Distinct() call is in the LINQ query?

推荐答案

LINQ中的Distinct扩展方法没有等效的查询语法.

The Distinct extension method in LINQ does not have a query syntax equivalent.

请参见 https://docs.microsoft.com/zh-CN/archive/blogs/charlie/linq-farm-using-distinct-and-avoiding-lambdas 了解有关原因的更多信息.

See https://docs.microsoft.com/en-us/archive/blogs/charlie/linq-farm-using-distinct-and-avoiding-lambdas for additional information as to why.

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