concatenating value to value in c# code -- Asp.net MVC

Question

I have an anchor and I am assigning the the id to this anchor dynamically

<li>
  <a href="#" 
     name="offset" onclick="return so(this);" 
     data-val="@Math.Round(Convert.ToDouble(ViewBag.lst[0].ca/2))" 
     id='javascript:"[email protected](Convert.ToDouble(ViewBag.lst[0].ca / 2))"'>Last</a>
</li>

I supposed to get a3 or a4 or a5 because this @Math.Round(Convert.ToDouble(ViewBag.lst[0].ca / 2)) returns numeric value.

But I am getting "a+3" or "a+4". Apparently it is concatenating the plus sign too.

What I am trying to do above is simple string concatenation. This above code is from asp.net mvc view.

why do you need js there in the first place?

noobed
– noobed

2015-06-18 07:28:35 +00:00
Commented Jun 18, 2015 at 7:28 — noobed
– noobed, Commented Jun 18, 2015 at 7:28
Did any of the answers work out for you?

noobed
– noobed

2015-06-18 08:09:59 +00:00
Commented Jun 18, 2015 at 8:09 — noobed
– noobed, Commented Jun 18, 2015 at 8:09

Adil · Accepted Answer · 2015-06-18 07:40:08Z

2

The + is not evaluated as operator rather treated as a string, you can use string.Concat to concatenate the string and your expression.

 <li><a href="#" name="offset" onclick="return so(this);" data-val="@Math.Round(Convert.ToDouble(ViewBag.lst[0].ca/2))"
       id='@string.Concat("a",Math.Round(Convert.ToDouble(ViewBag.lst[0].ca / 2)))'>Last</a></li>

edited Jun 18, 2015 at 7:40

answered Jun 18, 2015 at 7:26

Adil

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1 Comment

user786 Over a year ago

now it's returning "[email protected](Convert.ToDouble(ViewBag.lst[0].ca / 2))"

noobed · Accepted Answer · 2015-06-18 07:30:56Z

1

Since you are doing this inside your cshtml (I suppose), you could avoid the ugliness of inline javascript and simply use:

 @("a"+ Math.Round(Convert.ToDouble(ViewBag.lst[0].ca / 2))

answered Jun 18, 2015 at 7:30

noobed

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