C# “不在”的 Lambda 表达式？
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Lambda Expression for "not in"?
提问by angel
I have a detailcollectioncollection in which every detail has
我有一个detailcollection集合，其中每个细节都有
code, price, name
And a string with some codes
还有一个带有一些代码的字符串
string codes = "1,2,3";
I know I can get an array using string.Split()
我知道我可以使用 string.Split()
string[] codesarray = codes.Split(',');
But how can I get products not in codes?
但是我怎样才能得到不在里面的产品codes呢？
// the idea I have, but I would not like to have a loop
for (int i = 0; i < codesarray.Length; i++)
{
detailcollection.Where(x => x.ope_idsku == codesarray[i])
}
I would like something like:
我想要类似的东西：
detailcollection.Where(x => x.ope_idsku not in (codesarray))
采纳答案by Zbigniew
Selected details collection items which ids are not in codesarray:
id 不在的选定详细信息集合项目codesarray：
detailcollection.Where (x=> !codesarray.Contains(x.ope_idsku))
