條件性拆分字符串分隔符多

Question

我有一個字符串

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

我想根據定界符這個字符串分開。如果我在開始時有＃這將表明部分字符串（字符串[]部分）。如果字符串將以*開頭，則表明我有一個類別（字符串[]類別）。 因此，我想有

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

我發現這個答案： string.split - by multiple character delimiter 但它不是我想做的事。

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

隨着string.Split你可以這樣做（除了正則表達式更快;））

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)); 
}