C#

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

namespace FirstCheckBookInSQL
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

        }

        
        private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'checkBookManagementDataSet.CheckbookUSBPersonal' table. You can move, or remove it, as needed.
            this.checkbookUSBPersonalTableAdapter.Fill(this.checkBookManagementDataSet.CheckbookUSBPersonal);
        }

        private void TBDbutton_Click(object sender, EventArgs e)
        {

            DataSet myChangedDataSet = this.checkBookManagementDataSet.GetChanges();
            if (myChangedDataSet != null)
            {
                // get how many rows changed

// this is the line I am having trouble with:
                int modifiedRows = this.checkbookUSBPersonalTableAdapter.Update(myChangedDataSet);

                //MessageBox.Show("Database has been updated successfully: " +
                //modifiedRows + " Modified row(s) ", "Success");
                this.checkBookManagementDataSet.AcceptChanges();
                myChangedDataSet.AcceptChanges();

            }

            MessageBox.Show("no data changed");
        }
    }
}
</pre>