Data not show in gridview from the database

hi

Please Experts Check this program

Data does not showing in gridvew from database when i am selecting the date in the datetimepicker.

Not Working

           string connstr = @"Server=.\SQLEXPRESS ;Initial Catalog=RPSJDB;Integrated Security=True; Max Pool Size=100";

            string query = "select txtDate,txtCustomerName,txtAddress from EntryTable where txtDate=@myDate";

            SqlConnection conn = new SqlConnection(connstr);

            SqlDataAdapter dataAdapter = new SqlDataAdapter(query, conn);

            dataAdapter.SelectCommand.Parameters.Add("@myDate", dateTimePicker1.Value);

            SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);

            DataTable table = new DataTable();

            table.Locale = System.Globalization.CultureInfo.InvariantCulture;

            dataAdapter.Fill(table);

            dataGridView1.DataSource = table;

            bindingSource1.DataSource = table;

            dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader);

            dataGridView1.ReadOnly = true;

            dataGridView1.DataSource = bindingSource1;

Working

           string connstr = @"Server=.\SQLEXPRESS ;Initial Catalog=RPSJDB;Integrated Security=True; Max Pool Size=100";

           string query = "select txtDate,txtCustomerName,txtAddress from EntryTable where txtCustomerName='Manish'";

            SqlConnection conn = new SqlConnection(connstr);

            SqlDataAdapter dataAdapter = new SqlDataAdapter(query, conn);

            DateTime tempDateTime = new DateTime();

            SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);

            DataTable table = new DataTable();

            table.Locale = System.Globalization.CultureInfo.InvariantCulture;

            dataAdapter.Fill(table);

            dataGridView1.DataSource = table;

            bindingSource1.DataSource = table;

            dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader);

            dataGridView1.ReadOnly = true;

            dataGridView1.DataSource = bindingSource1;