c# - 具有多个分隔符的条件拆分字符串

Question

我有一个字符串

string astring="#This is a Section*This is the first category*This is the
second Category# This is another Section";

我想根据分隔符分隔这个字符串。如果我在开头有 # 这将指示部分字符串（字符串 [] 部分）。如果字符串以 * 开头，这将表明我有一个类别（字符串 [] 类别）。结果我想拥有

string[] section = { "This is a Section", "This is another Section" }; 
string[] category = { "This is the first category ",
     "This is the second Category " };

我找到了这个答案： string.split - by multiple character delimiter 但这不是我想要做的。

Answer 1

string astring=@"#This is a Section*This is the first category*This is the second Category# This is another Section";

string[] sections = Regex.Matches(astring, @"#([^\*#]*)").Cast<Match>()
    .Select(m => m.Groups[1].Value).ToArray();
string[] categories = Regex.Matches(astring, @"\*([^\*#]*)").Cast<Match>()
    .Select(m => m.Groups[1].Value).ToArray();

Answer 2

使用 string.Split 你可以做到这一点（比正则表达式更快；））

List<string> sectionsResult = new List<string>();
List<string> categorysResult = new List<string>();
string astring="#This is a Section*This is the first category*This is thesecond Category# This is another Section";

var sections = astring.Split('#').Where(i=> !String.IsNullOrEmpty(i));

foreach (var section in sections)
{
    var sectieandcategorys =  section.Split('*');
    sectionsResult.Add(sectieandcategorys.First());
    categorysResult.AddRange(sectieandcategorys.Skip(1));
}