Get a substring inside a tag from Mainstring C#

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Hi I have a string like this

"[fconsender]Username (11:00 AM):[/fconsender] Hi Good Afternoon!"

or

"[fconreceiver]AnotherUser (11:02 AM):[/fconreceiver] Yea! How are you ?"

I want to extract the string inside [fconsender] and [/fconsender] or
[fconreceiver] and [/fconreceiver]...
How can I simply achieve it without using much loops,,.
Its just to change the colour of sender/reciever name...

Posted 27-Nov-13 21:23pm

Yesudasan Moses

Updated 27-Nov-13 21:25pm

v3

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-11-27T21:31:00

Of course, no loops. Please see:
http://msdn.microsoft.com/en-us/library/ms131448(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/tabh47cf(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/kwb0bwyd(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/k8b1470s(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/hxthx5h6(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/aka44szs(v=vs.110).aspx[^].

Or http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex%28v=vs.110%29.aspx[^].

—SA

Ashish_Agrawal · Answer 2 · 2013-11-27T21:35:00

Solution 2

You can use following function..

C#

string GetMiddleString(string input, string firsttoken, string lasttoken)
{
    int pos1 = input.IndexOf(firsttoken) + 1;
    int pos2 = input.IndexOf(lasttoken);
    string result = input.Substring(pos1 , pos2 - pos1);
    return result
}

http://stackoverflow.com/a/2449659[^]

Posted 27-Nov-13 21:35pm

Ashish_Agrawal

Comments

Karthik_Mahalingam 28-Nov-13 4:07am

check once please...

Karthik_Mahalingam · Answer 3 · 2013-11-27T22:06:00

Try this code..

works fine..

C#

string input = "[fconsender]Username (11:00 AM):[/fconsender] Hi Good Afternoon!";
           string starttag = "[fconsender]";
           string endtag = "[/fconsender]";
           int sindex = input.IndexOf(starttag) + starttag.Length;
           int length = input.IndexOf(endtag) - starttag.Length;
           string output = input.Substring(sindex, length);

BillWoodruff · Answer 4 · 2013-11-28T00:42:00

Just for the sake of variety:

C#

private string s1 = "[fconsender]Username (11:00 AM):[/fconsender] Hi Good Afternoon!";

private string s2 = "[fconreceiver]AnotherUser (11:02 AM):[/fconreceiver] Yea! How are you ?";

private string getInnerText(string theText)
{
    return (theText.Contains("sender"))
        ? theText.Substring(12, theText.IndexOf('[', 1) - 12)
        : theText.Substring(14, theText.IndexOf('[', 1) - 14);
}

private void Test_getInnerText()
{
    string s3 = getInnerText(s1);
    string s4 = getInnerText(s2);

    Console.WriteLine("{0},\r\n{1}", s3, s4);
}

Yes, I know the dangers of using "hard-coded" indexes; if you don't, forget this code :)

Get a substring inside a tag from Mainstring C#

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