如何通过linq提取唯一的子字符串

Question

我有一个数组

{ 
  Line.Column1.Pos,
  Line.Column1.Length,
  Line.Column2.Value,
  Line.Column3.Pos,
  Line.Column3.Length,
  line.Column5.Date
}

如何获取unque子串列表，即 Linq {Column1,Column2,Column3,Column5 }

Answer 1

如果你能得到数组中项目的字符串表示，

你可以这样做：

string[] items = 
{ 
    "Line.Column1.Pos", 
    "Line.Column1.Length", 
    "Line.Column2.Value", 
    "Line.Column3.Pos", 
    "Line.Column3.Length", 
    "line.Column5.Date" 
};

var distinctItems = items.
    Select(o => o.Split('.')[1]).
    Distinct().
    ToArray();