Question

注意到一些代码，例如

string[] ary = parms.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
for( int i = 0; i < ary.Length; i++)
       ary[i] = ary[i].Trim();

工作正常，但想知道是否有更好的方法一步完成

Answer 1

string[] trimmedStrings = parms.Split(',')
                               .Select(s => s.Trim())
                               .Where(s => s != String.Empty)
                               .ToArray();

BTW，请考虑使用类似List<string>的通用类型列表而不是传统数组

IList<string> trimmedStrings = parms.Split(',')
                                    .Select(s => s.Trim())
                                    .Where(s => s != String.Empty)
                                    .ToList();

Answer 2

仍然是2步但没有循环

ary = ary.Select(str => str.Trim()).ToArray();

或

ary = ary.Split(',').Select(str => str.Trim())
                    .Where(str => str != string.Empty)
                    .ToArray();

保留RemoveEmptyEntries行为并删除可追踪的项目

Answer 3

这非常巧妙地说：

//This could be inlined to the row below if you wanted
Regex oRE = new Regex(@"\s*\,\s*");
string TestString = ",, test , TEST 2   ,Test3";
//This is really the line you're looking for - the rest of the code just sets up an example
string[] Results = oRE.Split(TestString.Trim());
foreach(string S in Results){
    Console.WriteLine(">>" + S + "<<");
}

作为一个单行：

string[] Results = new Regex(@"\s*\,\s*").Split(TestString.Trim());

在string.Split（）之后有任何更好的TRIM（）方法吗？

3 个答案: