检查列表中的对象是否具有特定的字段内容

Question

Sorry for question title, I don't know really how to explain it in a single sentence...

I have a class like this

public class xyz
{
    public static string attr1;
    public static string attr2;
    public static string attr3;
}

how can i check if there is an object with attr1=="aaa" in a List<xyz> ?

is there something like

List<xyz> MyList = new List<xyz>();

[...]

bool attr1_exist = MyList.attr1.Contains("aaa");

?

Answer 1

这应该这样做：

bool attr1_exist = MyList.Exists(s=> s.attr1 == "aaa")

Answer 2

使用任何（） ：

bool attr1_exist = MyList.Any(x => x.attr1.Contains("aaa"));

Answer 3

Try Following Code:

Boolean IsExist = MyList.Any(n=> n.attr1 == "aaa");

OR

if(MyList.Where(n=> n.attr1 == "aaa").Count() > 0)
{
    //Do Somthing . . .
}