不能将types'System.Collections.Generic.IEnumerable <AnonymousType＃1>'隐式转换为'System.Collections.Generic.List <string>

我有下面的代码：

List<string> aa = (from char c in source select new { Data = c.ToString() }).ToList(); 

但是关于

 List<string> aa = (from char c1 in source from char c2 in source select new { Data = string.Concat(c1, ".", c2)).ToList<string>(); 

编译得到错误

不能将types'System.Collections.Generic.List<AnonymousType#1>'隐式转换为'System.Collections.Generic.List<string>'

需要帮忙。

Answer 1

 IEnumerable<string> e = (from char c in source select new { Data = c.ToString() }).Select(t = > t.Data); // or IEnumerable<string> e = from char c in source select c.ToString(); // or IEnumerable<string> e = source.Select(c = > c.ToString()); 

---

然后你可以调用ToList() ：

 List<string> l = (from char c in source select new { Data = c.ToString() }).Select(t = > t.Data).ToList(); // or List<string> l = (from char c in source select c.ToString()).ToList(); // or List<string> l = source.Select(c = > c.ToString()).ToList(); 

Answer 2

如果你希望它是List<string> ，那么去掉匿名types并添加一个.ToList()调用：

 List<string> list = (from char c in source select c.ToString()).ToList(); 

Answer 3

尝试

 var lst= (from char c in source select c.ToString()).ToList(); 

Answer 4

如果你的源代码是像"abcd"这样的string，并且想产生一个像这样的列表：

 { "aa" }, { "bb" }, { "cc" }, { "dd" } 

然后打电话：

 List<string> list = source.Select(c => String.Concat(c, ".", c)).ToList(); 

Answer 5

我认为答案如下

 List<string> aa = (from char c in source select c.ToString() ).ToList(); List<string> aa2 = (from char c1 in source from char c2 in source select string.Concat(c1, ".", c2)).ToList();