I Want To Add a Class in master page div in content page dynamically.

See more:

Masterpage

I Want To Add a Class in master page div in content page dynamically.
my Code is:
MasterPage.Master

<ul>
<li ><a href="Default.aspx" class="current" >Home</a></li>
<li id="lidiv"><a href="BankJobs.aspx"  >Bank Jobs</a></li>
<ul>

I Want to Add current class to div id=lidiv in BankJobs.aspx Page
BankJobs.aspx.cs

protected void Page_Load(object sender, EventArgs e)
    {
        ContentPlaceHolder myContent = (ContentPlaceHolder)this.Master.FindControl("ContentPlaceHolder1");
      
        HtmlGenericControl addressDiv = myContent.FindControl("lidiv") as HtmlGenericControl;
        addressDiv.Attributes.Add("class", "current");
    }