Get string between two strings in a string

I have a string like:

"super exemple of string key : text I want to keep - end of my string"

I want to just keep the string which is between "key : " and " - ". How can I do that? Must I use a Regex or can I do it in another way?

Solution 1:

Perhaps, a good way is just to cut out a substring:

String St = "super exemple of string key : text I want to keep - end of my string";

int pFrom = St.IndexOf("key : ") + "key : ".Length;
int pTo = St.LastIndexOf(" - ");

String result = St.Substring(pFrom, pTo - pFrom);

Solution 2:

string input = "super exemple of string key : text I want to keep - end of my string";
var match = Regex.Match(input, @"key : (.+?)-").Groups[1].Value;

or with just string operations

var start = input.IndexOf("key : ") + 6;
var match2 = input.Substring(start, input.IndexOf("-") - start);

Solution 3:

You can do it without regex

 input.Split(new string[] {"key :"},StringSplitOptions.None)[1]
      .Split('-')[0]
      .Trim();

Solution 4:

Here is the way how i can do that

   public string Between(string STR , string FirstString, string LastString)
    {       
        string FinalString;     
        int Pos1 = STR.IndexOf(FirstString) + FirstString.Length;
        int Pos2 = STR.IndexOf(LastString);
        FinalString = STR.Substring(Pos1, Pos2 - Pos1);
        return FinalString;
    }