remove css class in code behind

Question

I have this control

<asp:Label ID="lblName" runat="server" Text="My Name" CssClass="required regular" /> 

I want to remove the required class from code behind, how can I do that?

Answer 1

You can replace "required" with an empty string:

lblName.CssClass = lblName.CssClass.Replace("required", ""); 

Answer 2

Just a slightly more generic way of doing the same - should rule out potential errors where a css class might occur elsewhere in the CssClass property.

public void RemoveCssClass(WebControl controlInstance, String css) {     controlInstance.CssClass = String.Join(" ", controlInstance.CssClass.Split(' ').Where(x => x != css).ToArray()); }