Parameter inside <%= %>

My server side code is:

private static List WebsiteList(string category)

{

}

And in client side:

<%= WebsiteList %>

but it requires a parameter for category. I can't reference the dropdown list which element ID is "category".

Could you please help me what to do?

I am not sure exactly what is the actual error. Could you please follow this link implement the same if anything wrong, https://www.aspsnippets.com/Articles/Calling-ASPNet-WebMethod-using-jQuery-AJAX.aspx

Check this link, https://www.c-sharpcorner.com/blogs/bind-dropdown-using-jquery-ajax

Thanks, now I have the idea..

The follow question is: How to populate item on a dropdown list using jQuery AJAX after calling ASP .Net WebMethod?

Im using a WebForm1 in my code..

in server side code..

private static List<string> WebsiteList(string category)
{
return list of string>
}

in client side i have a dropdownlist of category

"category" class="form-control">
"Cars" selected>Cars
"Bike">Bike
"Boat">Boat

any changes or selection in category, it should call the WebsiteList

and display the list of websites here

class="form-group">
for="WebsiteList">Websites:
<%=WebsiteList %>

Could you please explain a little bit more. Thanks