how to add css class to html generic control div?

Question

I created a div tag like this:

System.Web.UI.HtmlControls.HtmlGenericControl dynDiv = 
    new System.Web.UI.HtmlControls.HtmlGenericControl(\"DIV\");
         


        

Answer 1

How about an extension method?

Here I have a show or hide method. Using my CSS class hidden.

public static class HtmlControlExtensions
{
    public static void Hide(this HtmlControl ctrl)
    {
        if (!string.IsNullOrEmpty(ctrl.Attributes["class"]))
        {
            if (!ctrl.Attributes["class"].Contains("hidden"))
                ctrl.Attributes.Add("class", ctrl.Attributes["class"] + " hidden");
        }
        else
        {
            ctrl.Attributes.Add("class", "hidden");
        }
    }

    public static void Show(this HtmlControl ctrl)
    {
        if (!string.IsNullOrEmpty(ctrl.Attributes["class"]))
            if (ctrl.Attributes["class"].Contains("hidden"))
                ctrl.Attributes.Add("class", ctrl.Attributes["class"].Replace("hidden", ""));
    }
}

Then when you want to show or hide your control:

myUserControl.Hide();

//... some other code

myUserControl.Show();