无法从"List <string>"转换为"string"异常

Question

当我声明一个列表时,我收到一个异常,例如无法从'List'转换为'string'.

 var query = new List<string>(){
                    new List<string>{"a", "b","c"},
                    new List<string> {"a"}};

我无法找到上面的错误.有人可以帮助我吗？

Answer 1

var query = new List<List<string>>(){
                    new List<string>{"a", "b","c"},
                    new List<string> {"a"}};