Импортировать из Excel в базу данных .mdf c#

//declare variables - edit these based on your particular situation
            string ssqltable = "Game";
            // make sure your sheet name is correct, here sheet name is sheet1, so you can change your sheet name if have
            string myexceldataquery = "select * from [sheet1$]";
            try
            {
                //create our connection strings
                string sexcelconnectionstring = @"provider=microsoft.jet.oledb.4.0;data source=" + excelfilepath +
                ";extended properties=" + "\"excel 8.0;hdr=yes;\"";
                string ssqlconnectionstring = @"Data Source=(LocalDB)\v11.0;AttachDbFilename=c:\users\user\documents\visual studio 2013\Projects\ComputerGaming\ComputerGaming\bin\Debug\ComputerGamingDatabase.mdf;Integrated Security=True";
                //execute a query to erase any previous data from our destination table
                string sclearsql = "delete from " + ssqltable;
                SqlConnection sqlconn = new SqlConnection(ssqlconnectionstring);
                SqlCommand sqlcmd = new SqlCommand(sclearsql, sqlconn);
                sqlconn.Open();
                sqlcmd.ExecuteNonQuery();
                sqlconn.Close();
                //series of commands to bulk copy data from the excel file into our sql table
                OleDbConnection oledbconn = new OleDbConnection(sexcelconnectionstring);
                OleDbCommand oledbcmd = new OleDbCommand(myexceldataquery, oledbconn);
                oledbconn.Open();
                OleDbDataReader dr = oledbcmd.ExecuteReader();
                SqlBulkCopy bulkcopy = new SqlBulkCopy(ssqlconnectionstring);
                bulkcopy.DestinationTableName = ssqltable;
                while (dr.Read())
                {
                    bulkcopy.WriteToServer(dr);
                }
 
                oledbconn.Close();
            }
            catch (Exception ex)
            {
                //handle exception
            }