Import Excel File to SQL using ASP.net application

1. Add File Upload item toolbox
2. Add submit button to import
3. Add Label to show message after import
4. On button click event insert below code

 protected void Button1_Click(object sender, EventArgs e)
        {
            if (FileUpload1.HasFile)
            {
                string path = string.Concat((Server.MapPath("~/temp/" + FileUpload1.FileName)));
                FileUpload1.PostedFile.SaveAs(path);
                //OleDbConnection oleDBcon = new OleDbConnection("Provider=Microsoft.Ace.OLEDB.12.0;Data Source" + path + ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1"";");
                OleDbConnection oleDBcon = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1;\"");
               
                OleDbCommand cmd = new OleDbCommand("select * from [Sheet1$]",oleDBcon);
                OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(cmd);

                oleDBcon.Open();
                DbDataReader dr = cmd.ExecuteReader();
                string con_str = @"Data Source=.;Initial Catalog=Posts;Integrated security=True";
                SqlBulkCopy bulkInsert = new SqlBulkCopy(con_str);
                bulkInsert.DestinationTableName = "EmployeeDetails";
                bulkInsert.WriteToServer(dr);
                oleDBcon.Close();
                Array.ForEach(Directory.GetFiles((Server.MapPath("~/temp/"))),File.Delete);
                Label1.ForeColor = Color.Green;
                Label1.Text = "Inserted";
            }
            else
            {
                Label1.ForeColor = Color.Red;
                Label1.Text = "Please insert";
            }
        }

Also include below Dlls:
using System.Data.SqlClient;
using System.Data.OleDb;
using System.IO;
using System.Drawing;
using System.Data.Common;
using System;