public void CloseForm()
        {
            VMasterDataTable.Clear();

            foreach (JkDetailDataSet DataSet in IAppHandler.FindControlByType("JkDetailDataSet", this))
            {
                DataSet.DataTable.Clear();
            }

            if (IAppHandler.OpenPreviousForm(this) != null)
            {
                IAppHandler.OpenPreviousForm(this).Run();
            }
            this.Dispose();
        }