C# - How to Import Excel Sheet to SQL Server Table in C#

CREATETABLE [dbo].[tblCustomer](
    [id] intNULL,
    [name] varchar(100) NULL,
    [dob] dateNULL
) 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//added below name spaces
using System.IO;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;

namespace TechBrothersIT.com_CSharp_Tutorial
{
class Program
    {
staticvoid Main(string[] args)
        {
//the datetime and Log folder will be used for error log file in case error occured
string datetime = DateTime.Now.ToString("yyyyMMddHHmmss");
string LogFolder = @"C:\Log\";
            try
            {

                //Provide the Database Name 
                string DatabaseName = "TechbrothersIT";
                //Provide the SQL Server Name 
                string SQLServerName = "(local)";
                //Provide the table name in which you want to load excel sheet's data
                String TableName = @"tblCustomer";
                //Provide the schema of table
                String SchemaName = @"dbo";
                //Provide Excel file path
                string fileFullPath = @"C:\Source\Customer_1.xlsx";
                //Provide Sheet Name you like to read
                string SheetName = "Customer";


                //Create Connection to SQL Server Database 
                SqlConnection SQLConnection = new SqlConnection();
                SQLConnection.ConnectionString = "Data Source = "
                    + SQLServerName + "; Initial Catalog ="
                    + DatabaseName + "; "
                    + "Integrated Security=true;";


                    //Create Excel Connection
                    string ConStr;
                    string HDR;
                    HDR = "YES";
                    ConStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source="
                        + fileFullPath + ";Extended Properties=\"Excel 12.0;HDR=" + HDR + ";IMEX=0\"";
                    OleDbConnection cnn = new OleDbConnection(ConStr);        


//Get data from Excel Sheet to DataTable
                            OleDbConnection Conn = new OleDbConnection(ConStr);
                            Conn.Open();
                            OleDbCommand oconn = new OleDbCommand("select * from [" + SheetName + "$]", Conn);
                            OleDbDataAdapter adp = new OleDbDataAdapter(oconn);
                            DataTable dt = new DataTable();
                            adp.Fill(dt);
                            Conn.Close();

                            SQLConnection.Open();
//Load Data from DataTable to SQL Server Table.
using (SqlBulkCopy BC = new SqlBulkCopy(SQLConnection))
                            {
                                BC.DestinationTableName = SchemaName + "." + TableName;
foreach (var column in dt.Columns)
                                    BC.ColumnMappings.Add(column.ToString(), column.ToString());
                                BC.WriteToServer(dt);
                            }
                            SQLConnection.Close();   

            }
catch (Exception exception)
            {
// Create Log File for Errors
using (StreamWriter sw = File.CreateText(LogFolder
                    + "\\" + "ErrorLog_" + datetime + ".log"))
                {
                    sw.WriteLine(exception.ToString());

                }

            }

        }
    }
}