public class DeleteCategory : IHttpHandler, IReadOnlySessionState
{
    public void ProcessRequest(HttpContext context)
    {
        context.Response.DisablePageCaching();

        int categoryID = int.Parse(context.Request.QueryString["id"]);

        UserData ud = LoginHelper.LoggedInUserData;

        if (CategoriesBLL.DeleteCategory(ud, categoryID))
        {
            context.Response.Write("OK");
        }
        else
        {
            context.Response.Write("InUse");
        }
    }

    public bool IsReusable
    {
        get { return false; }
    }
}