Import data from csv to sql server using asp.net c#

///////////////////// HTML

<asp:FileUpload ID="FileUpload1" runat="server" />

<asp:Button ID="Button2" Text="Upload" OnClick="Upload" runat="server" />

//////////////////////CS

    protected void Upload(object sender, EventArgs e)

    {

        Import_Csv

    }

    public void Import_Csv()

    {

        //Creating object of datatable 

        DataTable tblcsv = new DataTable();

        //creating columns 

        tblcsv.Columns.Add("Name");

        tblcsv.Columns.Add("City");

        tblcsv.Columns.Add("Address");

        tblcsv.Columns.Add("Designation");

        //getting full file path of Uploaded file 

        string CSVFilePath = Path.GetFullPath(FileUpload1.PostedFile.FileName);

        //Reading All text 

        string ReadCSV = File.ReadAllText(CSVFilePath);

        //spliting row after new line 

        foreach (string csvRow in ReadCSV.Split('\n'))

        {

            if (!string.IsNullOrEmpty(csvRow))

            {

                //Adding each row into datatable 

                tblcsv.Rows.Add();

                int count = 0;

                foreach (string FileRec in csvRow.Split(','))

                {

                    tblcsv.Rows[tblcsv.Rows.Count - 1][count] = FileRec;

                    count++;

                }

            }

        }

        //Calling insert Functions 

        InsertCSVRecords(tblcsv);

    }

    //Function to Insert Records 

    private void InsertCSVRecords(DataTable csvdt)

    {

        string conn="";

        SqlConnection con = new SqlConnection(conn);

        //creating object of SqlBulkCopy   

        SqlBulkCopy objbulk = new SqlBulkCopy(con);

        //assigning Destination table name   

        objbulk.DestinationTableName = "Employee";

        //Mapping Table column   

        objbulk.ColumnMappings.Add("Name", "Name");

        objbulk.ColumnMappings.Add("City", "City");

        objbulk.ColumnMappings.Add("Address", "Address");

        objbulk.ColumnMappings.Add("Designation", "Designation");

        //inserting Datatable Records to DataBase   

        con.Open();

        objbulk.WriteToServer(csvdt);

        con.Close();

    }