Programmatically remove specific class name from HTML element

Question

In C# ASP.NET I am adding a class to an <input> using:

myInput.Attributes.Add("class","myClass");

At some point I would like to remove the added class (not all classes). Is there an equivalent along the lines of:

myInput.Attributes.Remove("class","myClass");

.Remove() seems to only accept a key (no pair value). Thank you!

Answer 1

There is nothing built in to manage multiple values in the attribute.

You will have to parse the list, remove the class name and update the attribute.

Something like (untested):

var classes = myInput.Attributes["class"].Split(' ');

var updated = classes.Where(x => x != "classtoremove").ToArray();

myInput.Attributes["class"] = string.Join(" ", updated);