我怎么能在方法表达中正确对待这个!
var query = from l in list其中l.Key =="M"
选择新{Value = l,Length = l.Length};
您想将其转换为一系列扩展方法调用吗?
var query = list.Where(l => l.Key == "M")
.Select(l => new { Value = l, Length = l.Length });
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