Possible to add a class to an existing class attribute of object via C#?

Question

I have an existing class for an input, is it possible to add an additional class for the object in C#.net, instead of doing a if/else and not having a preset class on the object in the first place?

Try as I might I can't make sense of this question. What does 'add an additional class for this object' mean? What does 'having a preset class on the object' mean? Maybe some sample code would help? — ladenedge
– ladenedge, Commented Jul 20, 2010 at 3:31

janhartmann · Accepted Answer · 2010-07-20 07:03:29Z

1

txtField.CssClass = "first_class";
// Output: class="first_class"

txtField.CssClass += " another_class";
// Output: class="first_class another_class"

answered Jul 20, 2010 at 7:03

janhartmann

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1 Comment

bcm Over a year ago

This bloody rocks!!! I just read this is called a Lambda expression, introduced in 3.5, I'm using it!

Noldorin · Accepted Answer · 2010-07-20 07:54:48Z

1

Try this, works for me.

public static class ControlUtility
{
    public static void AddCssClass(WebControl control, string cssClass)
    {
        control.CssClass += " " + cssClass;
    }
    public static void RemoveCssClass(WebControl control, string cssClass)
    {
        control.CssClass = control.CssClass.Replace(" " + cssClass, "");
    }
}

ControlUtility.RemoveCssClass(lnkletter, "ln-enabled");
ControlUtility.RemoveCssClass(lnkletter, "ln-disabled");

edited Jul 20, 2010 at 7:54

Noldorin

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answered Jul 20, 2010 at 7:46

Aivan Monceller

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3 Comments

Noldorin Over a year ago

Copying directly from another SO user's post without attribution. Not good.

Aivan Monceller Over a year ago

hi, i am copying this directly from my code base. if you are doing the same it's not my fault. didn't know it existed here at stack overflow, I didn't clicked the last link

Noldorin Over a year ago

I'll give you benefit of the doubt, though it's likely you did originally get it from AnthonyWJones's post <stackoverflow.com/questions/445967/…> - easy enough to forget though.

Community · Accepted Answer · 2017-05-23 10:27:42Z

0

this didn't work

txtSubject.CssClass.Replace("text-single", "text-single subjectDisabled");

found the solution here:

Best way to change CSS Classes from code

edited May 23, 2017 at 10:27

CommunityBot

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answered Jul 20, 2010 at 3:30

bcm

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1 Comment

bcm Over a year ago

this solution is out-dated for me now... see meep's example of Lambda expression above, which is very similar to JavaScript

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