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[英]linq how to select a parent with a child collection that contains all of an array (or list) of values
[英]linq how to select a parent with a child collection that contains one or many of an array (or list) of values
這似乎很容易
var orx = gg.Where(x=>x.ProductAttributes.Any (pa =>pa.AttributeId == "home"));
當產品屬性的值為“home”時返回gg
我需要它返回where和gg有一個數組的產品屬性值,即
var orx = gg.Where(x=>x.ProductAttributes.Any (pa =>pa.AttributeId in "home,work"));
關於什么...
string[] values = new string[] { "home", "work" };
var orx = gg.Where(x => x.ProductAttributes.Any(pa => values.Contains(pa.AttributeId));
甚至"home,work".Contains(pa.AttributeId)
。如果您的列表與您的示例一樣可靠,則"home,work".Contains(pa.AttributeId)
應該有效。 (除非你能確保AttributeId不是任何列表單詞的子串,例如“我”,否則我不推薦這個。
var orx = gg.Where(x => x.ProductAttributes
.Any(pa =>
array.Containspa(pa.AttributeId));
var orx = gg.Where(x => x.ProductAttributes
.Any(pa =>
"home, work".Split(',').Contains(pa.AttributeId));
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