也许你正在尝试做

 字符串combindedString =的string.join（，myList.ToArray（））;
 

您可以与您希望通过拆分在列表中的元素的内容替换，

How do I convert a list to a string in C#?

When I execute toString on a List object, I get:

System.Collections.Generic.List`1[System.String]

Maybe you are trying to do

string combindedString = string.Join( ",", myList.ToArray() );

You can replace "," with what you want to split the elements in the list by.