Remove a CSS class from HTML element in the code behind file

Question

I have the following on my interface / webform:

Now I have a condition in my

Answer 1

How to remove ONE CSS class from a control using .NET

If a control has several classes you can remove one of those classes by editing the class string. Both of these methods require assigning an ID to the HTML element so that you can target it in the code behind.

VB.NET

mydiv.CssClass = mydiv.CssClass.Replace("forceHeight", "").Trim()

C#

mydiv.CssClass = mydiv.CssClass.Replace("forceHeight", "").Trim();

---

OR using html generic control

VB.NET

mydiv.Attributes("class") = mydiv.Attributes("class").Replace("forceHeight", "").Trim()

C#

mydiv.Attributes["class"] = mydiv.Attributes["class"].Replace("forceHeight", "").Trim();

---

Optional Trim to remove trailing white space.

---

How to remove ALL CSS classes from a control using .NET

VB.NET

mydiv.Attributes("class") = ""

C#

mydiv.Attributes["class"] = "";