Windows Form ขอถามเรืองการเลือกดูข้อมูลตามวันที่ให้แสดงผ่าน DataGridView ใน C# ค่ะ

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.OleDb;

namespace WindowsFormsApplication1
{
    public partial class Form6 : Form
    {
        public Form6()
        {
            InitializeComponent();
        }

        private void logBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.logBindingSource.EndEdit();
            this.tableAdapterManager.UpdateAll(this.internetCafe2DataSet);

        }

        private void Form6_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'internetCafe2DataSet.Log' table. You can move, or remove it, as needed.
            this.logTableAdapter.Fill(this.internetCafe2DataSet.Log);
            // TODO: This line of code loads data into the 'internetCafe2DataSet.Log' table. You can move, or remove it, as needed.
            this.logTableAdapter.Fill(this.internetCafe2DataSet.Log);

        }

        private void logBindingNavigatorSaveItem_Click_1(object sender, EventArgs e)
        {
            this.Validate();
            this.logBindingSource.EndEdit();
            this.tableAdapterManager.UpdateAll(this.internetCafe2DataSet);

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form5 frm = new Form5();
            frm.Show();
            this.Hide();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            string StrConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:/oil/ite-304/project/test/WindowsFormsApplication1/InternetCafe2.accdb;Persist Security Info=False";
            OleDbConnection Conn = new OleDbConnection(StrConn);
            Conn.Open();

            StringBuilder sb = new StringBuilder();
            sb.Append("SELECT ID,[DateTime],[Number],RCredit");
            sb.Append(" FROM log");
            sb.Append(" WHERE [DateTime]");
            sb.Append(" between @DateTime1 and @DateTime2");
            string login = sb.ToString();
            OleDbCommand com = new OleDbCommand(login, Conn);
            com.Parameters.Clear();
            com.Parameters.Add("@DateTime1", SqlDbType.NVarChar).Value = dateTimePicker1.Text.Trim();
            com.Parameters.Add("@DateTime2", SqlDbType.NVarChar).Value = dateTimePicker2.Text.Trim();
            OleDbDataReader dr = com.ExecuteReader();


            if (dr.HasRows)
            {
                string StrCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:/oil/ite-304/project/test/WindowsFormsApplication1/InternetCafe2.accdb;Persist Security Info=False";
                OleDbConnection Con = new OleDbConnection(StrConn);
                Con.Open();
                    dr.Read();
                    dr.Close();
                OleDbCommand con1 = new OleDbCommand();
			con1.Connection = Con;
			con1.CommandType = CommandType.Text;
            con1.CommandText = "select * from customer where [DateTime] between dateTimePicker1.Text and dateTimePicker2.Text";
            DataSet ds1 = new DataSet();
            OleDbDataAdapter adp1 = new OleDbDataAdapter(con1);
            adp1.Fill(ds1,"customer");
            logDataGridView.DataSource = ds1;
            logDataGridView.DataMember = "customer";
            Con.Close();

           
            }
            else
            {
                MessageBox.Show("Invalid");
            }

        }
    }
}