7/Form2.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace BB_Azizova
{
    public partial class F2Client : Form
    {
        public F2Client()
        {
            InitializeComponent();
        }

        private void clientsBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.clientsBindingSource.EndEdit();
            this.tableAdapterManager.UpdateAll(this.bB_AzizovaDataSet);

        }

        private void F2Client_Load(object sender, EventArgs e)
        {
            // TODO: данная строка кода позволяет загрузить данные в таблицу "bB_AzizovaDataSet.Clients". При необходимости она может быть перемещена или удалена.
            this.clientsTableAdapter.Fill(this.bB_AzizovaDataSet.Clients);

        }
        //
        private void b2_Click(object sender, EventArgs e)
        {
            clientsBindingSource.MoveFirst();
        }

        private void b6_Click(object sender, EventArgs e)
        {
            clientsBindingSource.AddNew();
        }

        private void b3_Click(object sender, EventArgs e)
        {
            clientsBindingSource.MoveNext();
        }

        private void b4_Click(object sender, EventArgs e)
        {
            clientsBindingSource.MovePrevious();
        }

        private void b5_Click(object sender, EventArgs e)
        {
            clientsBindingSource.MoveLast();
        }

        private void b8_Click(object sender, EventArgs e)
        {
            clientsBindingSource.RemoveCurrent();
        }

        private void b7_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.clientsBindingSource.EndEdit();
            this.tableAdapterManager.UpdateAll(this.bB_AzizovaDataSet);
        }
    }
}