C# Traverse a HTML WebControl to get Inner HTML

gistfile1.txt

HtmlGenericControl myControl = (HtmlGenericControl)this.FindControl("CoursesDataDiv");
StringBuilder sb = new StringBuilder();
using (StringWriter sw = new StringWriter(sb))
{
    using (HtmlTextWriter htw = new HtmlTextWriter(sw))
    {
        myControl.RenderControl(htw);
    }
}
string markup = sb.ToString();