private void buttonSearchSupplier_Click(object sender, EventArgs e)
        {
            SearchSupplier supplier = new SearchSupplier();

            supplier.ShowDialog();
            if (GlobalVariables.supplierID != "" && GlobalVariables.supplierID != null)
            {
                supplierID = Convert.ToInt16(GlobalVariables.supplierID);

                string[] supplierDetails = filterFunc.fetchSupplierDetails(supplierID);
                if (supplierDetails != null)
                {
                    textBoxSupplier.Text = supplierDetails[0];
                    formChanges          = true;
                }

                /*
                 * //select supplier info name
                 * conn = new SqlConnection(gd.ConString);
                 * conn.Open();
                 *
                 * strSelect = "SELECT Company_Name from SUPPLIER where Supplier_ID = @supplierID";
                 * cmd = new SqlCommand(strSelect, conn);
                 * cmd.Parameters.Add(new SqlParameter("supplierID", (object)supplierID));
                 * textBoxSupplier.Text = Convert.ToString(cmd.ExecuteScalar());*/

                GlobalVariables.supplierID = "";
            }
            else
            {
                GlobalVariables.supplierID = "";
            }
        }
        private void buttonSearchSupplier_Click(object sender, EventArgs e)
        {
            SearchSupplier supplier = new SearchSupplier();
            supplier.ShowDialog();
            if (GlobalVariables.supplierID != "" && GlobalVariables.supplierID != null)
            {
                supplierID = Convert.ToInt16(GlobalVariables.supplierID);

                string[] supplierDetails = filterFunc.fetchSupplierDetails(supplierID);
                if (supplierDetails != null)
                {
                    textBoxSupplier.Text = supplierDetails[0];
                    formChanges = true;
                }
                /*
                //select supplier info name
                conn = new SqlConnection(gd.ConString);
                conn.Open();

                strSelect = "SELECT Company_Name from SUPPLIER where Supplier_ID = @supplierID";
                cmd = new SqlCommand(strSelect, conn);
                cmd.Parameters.Add(new SqlParameter("supplierID", (object)supplierID));
                textBoxSupplier.Text = Convert.ToString(cmd.ExecuteScalar());*/

                GlobalVariables.supplierID = "";
            }
            else
            {
                GlobalVariables.supplierID = "";
            }
        }