private void btn_Purchase_Items_Click(object sender, EventArgs e)
        {
            Frm_Purchase_Items obj = new Frm_Purchase_Items();

            obj.WindowState   = FormWindowState.Maximized;
            obj.MdiParent     = this;
            obj.StartPosition = FormStartPosition.CenterParent;
            obj.Show();
            pnl_Customer_Sub_Panel.Hide();
        }
        private void btn_Purchase_Items_Click(object sender, EventArgs e)
        {
            Frm_Purchase_Items obj = new Frm_Purchase_Items();

            obj.MdiParent = this;
            // obj.WindowState = FormWindowState.Maximized;
            obj.ControlBox = false;
            obj.Show();

            Hide_Sub_Panels();
        }
        private void btn_Add_Click(object sender, EventArgs e)
        {
            Connection_Open();

            if (tb_ID.Text != "" && tb_Name.Text != "" && tb_Mobile_Number.Text != "" && tb_Address.Text != "" && tb_PAN_No.Text != "")
            {
                SqlCommand cmd = new SqlCommand("insert into Customer_Details values(" + tb_ID.Text + ",'" + tb_Name.Text + "'," + tb_Mobile_Number.Text + ",'" + tb_Address.Text + "','" + dtp_Date.Text + "','" + tb_PAN_No.Text + "')", Con);
                cmd.ExecuteNonQuery();

                // var Result = MessageBox.Show("Customer Added Successfully !!!", "SAVE SUCCESS", MessageBoxButtons.OK, MessageBoxIcon.Information);

                string            message = "Customer Added Successfully !!!";
                string            title   = "SAVE SUCCESS";
                MessageBoxButtons buttons = MessageBoxButtons.OK;
                DialogResult      result  = MessageBox.Show(message, title, buttons);

                if (result == DialogResult.OK)
                {
                    DialogResult output = MessageBox.Show("Customer Wants To Purchase The Items !!!", "PURCHASE OR NOT ", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                    if (output == DialogResult.Yes)
                    {
                        this.Hide();
                        Frm_Purchase_Items obj = new Frm_Purchase_Items();
                        obj.WindowState   = FormWindowState.Maximized;
                        obj.MdiParent     = Frm_Purchase_Items.ActiveForm;
                        obj.StartPosition = FormStartPosition.CenterParent;
                        obj.Show();
                    }
                    else
                    {
                        MessageBox.Show("Customer Only Saved !!!!", "SAVED", MessageBoxButtons.OK);
                    }
                }

                tb_ID.Text = Convert.ToString(Auto_Incr());
                tb_Name.Clear();
                tb_Mobile_Number.Text = "";
                tb_Address.Clear();
                tb_PAN_No.Clear();
            }
            else
            {
                MessageBox.Show("First Fill All Records !!!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

            Connection_Close();
        }