adding string to a List<string> with razor

Question

I need to add an array of strings in TempData["scripts"], but first I need to see if the string already exist... If it exist don't add it... else add it to the array.

This is what I have so far... It add the strings to the array... but I need to check the Tempdata first so it doesn't take duplicates...

@{
        var scripts = (List<string>)TempData["scripts"];
        scripts.Add("../Scripts/test.js");
        scripts.Add("../Scripts/testv.js");
        scripts.Add("../Scripts/testh.js");
    }

can't you use if or just call .Distinct() afterwards?

Vsevolod Goloviznin
– Vsevolod Goloviznin

2015-08-28 19:17:29 +00:00
Commented Aug 28, 2015 at 19:17 — Vsevolod Goloviznin
– Vsevolod Goloviznin, Commented Aug 28, 2015 at 19:17

Thiago Custodio · Accepted Answer · 2015-08-28 19:20:35Z

1

@{
        var scripts = (List<string>)TempData["scripts"];
        if(scripts.Contains("../Scripts/test.js") == false)
        {
             scripts.Add("../Scripts/test.js");
        }
        //repeat with the others
    }

answered Aug 28, 2015 at 19:20

Thiago Custodio

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2 Comments

Leo Javier Over a year ago

this is great but I would need a function to pass "../Scripts/test.js" as an argument... because I may have 10 files to add...

Leo Javier Over a year ago

this way I can have a list of filespath in an array and create a forloop to inject it... do you know what I mean?

Leo Javier · Accepted Answer · 2015-08-28 19:56:24Z

0

I wanted to be able to pass the path as an argument so I don't have to repeat it twice every time

 @{
        var scripts = (List<string>)TempData["scripts"];
        string[] path = {
            "../Scripts/jquery-flot/jquery.flot.js",
            "../Scripts/jquery-flot/jquery.flot.time.min.js",
            "../Scripts/jquery-flot/jquery.flot.selection.min.js",
            "../Scripts/jquery-flot/jquery.flot.animator.min.js",
            "../Scripts/jquery-sparkline/jquery-sparkline.js"
        };
        foreach (var item in path)
        {
            if (scripts.Contains(item) == false) { scripts.Add(item); }
        }
    }

answered Aug 28, 2015 at 19:56

Leo Javier

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Comments

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

Edit to reflect your answer

Assuming TempData["scripts"] is an IEnumerable<string>, you can do this more simply:

var scripts = (HashSet<string>)TempData["scripts"];
string[] path = {
    "../Scripts/jquery-flot/jquery.flot.js",
    "../Scripts/jquery-flot/jquery.flot.time.min.js",
    "../Scripts/jquery-flot/jquery.flot.selection.min.js",
    "../Scripts/jquery-flot/jquery.flot.animator.min.js",
    "../Scripts/jquery-sparkline/jquery-sparkline.js"
};

foreach (var item in path)
    scripts.Add(item);

There's no need to check for duplicates this way.

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Aug 28, 2015 at 19:42

John H

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