Replace string based on array element

Question

I have a array with some value and also having some parameter string.I have placed both below. I would like to replace the parameter string based on array element. Please help me to do thi.

string[] arrayval = {"Type:1","Action:doit","Message:hai"};

string Param = "Type:[Type]#Action:[Action]#Message:[Message]#OutMsg:[OutMsg]#@RetVal:[RetVal]";

My Expected Output 


string Param = "Type:1#Action:doit#Message:hai#OutMsg:[OutMsg]#@RetVal:[RetVal]";

Why don't you use dictionary instead of an array?

Sagar
– Sagar

2014-03-28 04:40:54 +00:00
Commented Mar 28, 2014 at 4:40 — Sagar
– Sagar, Commented Mar 28, 2014 at 4:40

cnd · Accepted Answer · 2014-04-02 11:18:06Z

3

not tested and some checks should be added but, see in version of @Ulugbek Umirov :)

var pattern = @"\[(.*?)\]";
var matches = Regex.Matches(Param, pattern);

foreach (Match m in matches) {
    var inb = "[" + m.Groups[1] + "]";
    var results = arrayval.Select (s  => s.Split(':'))
                          .FindAll(ss => ss[0] == m.Groups[1])
                          .Select (ss => ss[1]);
    Param = Param.Replace(inb, results[0]);
}

btw... a bit shorter version of @Ulugbek Umirov which should work just fine :)

Param = Regex.Replace(Param, @"\[(.+?)\]", m =>
    arrayval.Select(s => s.Split(new[] { ':' }, 2))
            .Where (p => p.Length == 2)
            .Where (p => p[0] == m.Groups[1].Value)
            .Select(p => p[1])
            .FirstOrDefault() ?? m.Value);

Update for replace with 0 if not exists:

Param = Regex.Replace(Param, @"\[(.+?)\]", m =>
    arrayval.Select(s => s.Split(new[] { ':' }, 2))
            .Where (p => p.Length == 2)
            .Where (p => p[0] == m.Groups[1].Value)
            .Select(p => p[1])
            .FirstOrDefault() ?? "0");

edited Apr 2, 2014 at 11:18

answered Mar 28, 2014 at 4:31

cnd

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10 Comments

cnd Over a year ago

@Neel as in question declared

Neel Over a year ago

why to use so many line of codes when you can do the samething in just 2 lines?

user3085540 Over a year ago

Please see my updated question. i need the same output while am giving the some strings in param.

cnd Over a year ago

@user3085540 isn't it already passed there with ?? m.Value ?

Ulugbek Umirov Over a year ago

@Heather No, FirstOrDefault() would return null, and you try to get [1] from it.

|

Ehsan · Accepted Answer · 2014-03-28 04:29:07Z

3

not very neat. But based on what information you have given. Following should work.

string[] arrayval = { "Type:1", "Action:doit", "Message:hai" };
string Param = string.Format("Type:{0}#Action:{1}#Message:{2}", arrayval[0].Split(':')[1], arrayval[1].Split(':')[1], arrayval[2].Split(':')[1]);

OutPut: Type:1#Action:doit#Message:hai

answered Mar 28, 2014 at 4:29

Ehsan

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Comments

Ulugbek Umirov · Accepted Answer · 2014-03-28 04:49:48Z

1

Slightly modified version of @Heather

Param = Regex.Replace(Param, @"\[(.+?)\]", m =>
{
    string paramName = m.Groups[1].Value;
    string paramValue = arrayval.Select(s => s.Split(new[] { ':' }, 2))
                                .Where(p => p.Length == 2)
                                .Where(p => p[0] == paramName)
                                .Select(p => p[1])
                                .FirstOrDefault();
    return paramValue ?? m.Value;
});

answered Mar 28, 2014 at 4:49

Ulugbek Umirov

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1 Comment

user3085540 Over a year ago

I need a small change in my question Action:*[Action] instead of old one. If action present in arrayval means i need the above output. Otherwise i need the below output "Type:1#Action:0#Message:hai#OutMsg:[OutMsg]#@RetVal:[RetVal]";

Neel · Accepted Answer · 2014-03-28 04:45:21Z

0

Try below code..i have tested it in VS 2012

string[] arrayval = { "Type:1", "Action:doit", "Message:hai" };

string Param = "Type: " + arrayval[0].Split(Convert.ToChar(":"))[1] + "#Action: " + arrayval[1].Split(Convert.ToChar(":"))[1] + "#Message: " + arrayval[2].Split(Convert.ToChar(":"))[1];

Output :-

Type: 1#Action: doit#Message: hai

answered Mar 28, 2014 at 4:45

Neel

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