How to get static variable by reflection in ASP.NET

 public class MycustomDS : SqlDataSource
{
    [Bindable(true)]
    [DefaultValue(true)]

    public dynSqlDataSource() : base()
    {
       this.Load += DynSqlDataSource_Load;        
    }     
    public dynSqlDataSource(string _connectionString, string _selectCommand) : base(_connectionString, _selectCommand)
    {
    }
    public dynSqlDataSource(string _provider, string _connectionString, string _selectCommand) : base(_provider, _connectionString, _selectCommand)
    {
    }

    private void DynSqlDataSource_Load(object sender, System.EventArgs e)
    {

        Type t = this.Page.GetType();
        System.Reflection.PropertyInfo pi = t.GetProperty("ViewState", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
        StateBag pageViewState = pi.GetValue(this.Page, null) as StateBag;

      //Here I get the value of a ViewState that I have on the page where I 
      //have placed my control

        if (System.Web.HttpContext.Current.Session["GlobalIDUsuario"] != null 
            & Page.Master.FindControl("ASPxComboBoxIDEmpresa") != null
         )
        {
            Int32 IDUsuario = Convert.ToInt32(System.Web.HttpContext.Current.Session["GlobalIDUsuario"]);
            string Connection = Tools.GetConnection(((ASPxComboBox)Page.Master.FindControl("ASPxComboBoxIDEmpresa")).Value == null ? 0 : (Int32)((ASPxComboBox)Page.Master.FindControl("ASPxComboBoxIDEmpresa")).Value, IDUsuario);
        }


    }

}

I have a custom control inherited from an sqldatasource. As you see in the code, I get the value of a ViewState that I have on the page (aspx) where I have the control placed, my question is ... Can I also access a static variable that I have in the .aspx where I have the control ? Thank you