C# Excel에서 데이터 읽기

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;
using Microsoft.Office.Interop.Excel;
namespace WinFormExcel1
{
    public partial class Form1 : Form
    {
        static string SourceExcelPath = "E:\\C# Projects\\WinFormExcel1\\ - - _C15F52AF.xlsx";//source excel file
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)// 
        {

        }
        private void button1_Click(object sender, EventArgs e)// 
        {
            // excel ， 
           // textBox1.Text += " ！";
            //string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + Path + ";" + "Extended Properties='Excel 12.0;HDR=Yes;IMEX=1'";
            string StrConn = "Provider=Microsoft.ACE.OLEDB.12.0;"+" Data Source=" + SourceExcelPath + ";"+"Extended Properties='Excel 12.0;HDR=Yes;IMEX=1'";// 
            string StrSelect = "SELECT *FROM [Sheet1$]";      
            OleDbConnection ExcelConn = new OleDbConnection(StrConn);
            OleDbDataAdapter da = new OleDbDataAdapter(StrSelect, ExcelConn);// 
            DataSet ds = new DataSet();
            da.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0];// 
            // 
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }
        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            
        }
    }
}