Replace the same line if contains any word in it in c#

Question

Example: If there is a line http://google.com/adi/727412;sz=728x90;ord=$RANDOM? which contains adi in it, wants it to be replaced with http://google.com/adi/727412;sz=728x90;click=$CLICK;ord=$RANDOM? and rest all other text to be same with no change.

Please help

Mikatsu · Answer 1 · 2013-03-10T08:38:40.247

0

        string url = "http://google.com/adi/727412;sz=728x90;ord=$RANDOM?";
        if(url.Contains("adi")) url = "http://google.com/adi/727412;sz=728x90;click=$CLICK;ord=$RANDOM?";


        string url = "blablablablablahttp://google.com/adi/727412;sz=728x90;ord=$RANDOM?blablabla";
        if(url.Contains("adi")) url.Replace("http://google.com/adi/727412;sz=728x90;ord=$RANDOM?", "http://google.com/adi/727412;sz=728x90;click=$CLICK;ord=$RANDOM?");

edited Mar 10 '13 at 08:38

answered Mar 10 '13 at 08:33

Mikatsu

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Looking only for "adi" can produce wrong results as you will find occurences inside words like for example "stadium". – Alina B. Mar 10 '13 at 08:42
mine was just a quick dirty solution ;) i like your's more aswell! – Mikatsu Mar 10 '13 at 08:55

score 0 · Accepted Answer · edited May 23 '17 at 10:29

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This is a fairly simple task:

string url = @"http://google.com/adi/727412;sz=728x90;ord=$RANDOM?";

if (url.Contains(@"/adi/"))
{
    int pos = url.IndexOf(";ord"); //// Find first occurence of Ord parameter
    url = url.Insert(pos, ";click=$CLICK"); //// Insert text at position
}

Edit: To accomplish the task for multiple occurences I used a solution from this thread.

{
    string url = "<google.com/adi/727412;sz=728x90;ord=$RANDOM?>; <google.com/adi/727412;sz=300x250;ord=$RANDOM?>";
    string searchString = @"/adi/";

    int n = 0;

    while ((n = url.IndexOf(searchString, n)) != -1)
    {
        n += searchString.Length;
        int pos = url.IndexOf('?', n);
        url = url.Insert(pos, ";click=$CLICK");
    }
}

edited May 23 '17 at 10:29

Community

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answered Mar 10 '13 at 08:36

Alina B.

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But than what if we have multiple of such strings with different IDs. Example : string URL = , With the above code it will change for 728x90 and not for 300x250. Please help. – Avinash Tiwary Apr 05 '13 at 03:05
Please see my improved answer. – Alina B. Apr 05 '13 at 13:55

Replace the same line if contains any word in it in c#

2 Answers2