Datagrid from sql server

 public partial class Shift : Form
    {
        private SqlConnection conn;
        private SqlDataAdapter daShift;
        private DataSet dsShift;
        private DataGrid dgShift;

        private const string tableName = "Shift";

        public Shift()
        {
            InitializeComponent();

            Initdata();
            //Create DataGridView
            dgShift = new DataGrid();
            dgShift.Location = new Point(5, 5);
            dgShift.Size = new Size(
                this.ClientRectangle.Size.Width - 10,
                this.ClientRectangle.Height - 50);
            dgShift.DataSource = dsShift;
            dgShift.DataMember = tableName;
            dgShift.RowHeadersVisible = false;
            //dgShift.Dock = DockStyle.Top;
            dgShift.Anchor = AnchorStyles.Top;

            // create update button
            Button btnUpdate = new Button();
            btnUpdate.Text = "Add Shift";
            btnUpdate.Location = new Point(
                this.ClientRectangle.Width / 2 - btnUpdate.Width / 2,
                this.ClientRectangle.Height - (btnUpdate.Height + 10));
            btnUpdate.Click += new EventHandler(btnUpdateClicked);
            btnUpdate.Anchor = AnchorStyles.Bottom;

            // make sure controls appear on form
            Controls.AddRange(new Control[] { dgShift, btnUpdate });

        }

        // Update button was clicked
        public void btnUpdateClicked(object sender, EventArgs e)
        {
            try
            {
                // write changes back to DataBase
            daShift.Update(dsShift, tableName);
            }
            catch (Exception)
            {
                MessageBox.Show("Error:Are there empty fields or inncorrect formats?","Error");
                return;
            }
        }


        // set up ADO.NET objects
        public void Initdata()
        {
            // instantiate the connection
            conn = new SqlConnection("Server=ROSS-PC; Database=ShiftSummary; Trusted_Connection = True");

            // 1. instantiate a new DataSet
            dsShift = new DataSet();

            // 2. init SqlDataAdapter with select command and connection
            daShift = new SqlDataAdapter(
                "select [ShiftDate],[ShiftStart],[ShiftEnd],[JobID], [RateType]  from Shift", conn);

            // 3. fill in insert, update, and delete commands
            SqlCommandBuilder cmdBldr = new SqlCommandBuilder(daShift);

            // 4. fill the dataset
            daShift.Fill(dsShift, tableName);
        }