c# - 如何在LINQ查询中放入条件WHERE子句

我正在尝试在condition为true的情况下执行以下操作，我想执行WHERE，否则不行。

var condition = true;

var mast = new List<Master>
{
    new Master{Id = 2, Prop1 = "Default", Prop2 = "Data", Prop3 = 11},
    new Master{Id = 3, Prop1 = "Some", Prop2 = "TestData", Prop3 = 11},
    new Master{Id = 4, Prop1 = "Some", Prop2 = "MoreData", Prop3 = 11},
};

var g = mast.Where(w=> condition ? (x => x.Prop1.ToLower() != "default" || x.Prop2.ToLower() != "data") : true = true).ToList();

上面的代码给我错误，

最佳答案

只需将条件移到lambda中即可:

var g = mast.Where(w => (condition
    ? (w.Prop1.ToLower() != "default" || w.Prop2.ToLower() != "data")
    : true)
).ToList();

关于c# - 如何在LINQ查询中放入条件WHERE子句，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/54995561/