C# importing excel to datagrid then save to mysql database HELP!!

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 MySql.Data.MySqlClient;

namespace training2
{
   
    public partial class Form1 : Form
    {
        
        f*** sh*t = new f***();
        

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            

            sh*t.GetData(dataGridView1);

        }



        public class f***
        {
            
             
             public MySqlConnection connection = new MySqlConnection("SERVER=localhost;DATABASE=mbms;UID=root;PASSWORD=qwerty123;");
             public MySqlDataAdapter adapter;
             public DataTable table = new DataTable();
             

            public void InitialiseDataAccessObjects()
            {
                

                this.adapter = new MySqlDataAdapter("SELECT  office_dept, function, proj_act, pa_code, fundspecial_acct, year FROM departments", this.connection);
               
                
                //MySqlCommand delete = new MySqlCommand("DELETE FROM departments WHERE pa_code = @pc", this.connection);
                MySqlCommand insert = new MySqlCommand("INSERT INTO departments (office_dept, function, proj_act, pa_code, fundspecial_acct, year) VALUES (@od, @f, @pa, @pc, @fa, @y )", this.connection);
                MySqlCommand update = new MySqlCommand("UPDATE departments SET office_dept = @od, function = @f, proj_act = @pa, fundspecial_acct = @fa, year = @y WHERE pa_code = @pc", this.connection);
                MySqlCommand delete = new MySqlCommand("DELETE FROM departments WHERE pa_code = @pc", this.connection);


                delete.Parameters.Add("@pc", MySqlDbType.Int32, 11, "pa_code");

                insert.Parameters.Add("@od", MySqlDbType.VarChar, 45, "office_dept");
                insert.Parameters.Add("@f", MySqlDbType.VarChar, 45, "function");
                insert.Parameters.Add("@pa", MySqlDbType.VarChar, 45, "proj_act");
                insert.Parameters.Add("@pc", MySqlDbType.Int32, 4, "pa_code");
                insert.Parameters.Add("@fa", MySqlDbType.VarChar, 8, "fundspecial_acct");
                insert.Parameters.Add("@y", MySqlDbType.Year, 4, "year");

                update.Parameters.Add("@od", MySqlDbType.VarChar, 45, "office_dept");
                update.Parameters.Add("@f", MySqlDbType.VarChar, 45, "function");
                update.Parameters.Add("@pa", MySqlDbType.VarChar, 45, "proj_act");
                update.Parameters.Add("@pc", MySqlDbType.Int32, 4, "pa_code");
                update.Parameters.Add("@fa", MySqlDbType.VarChar, 45, "fundspecial_acct");
                update.Parameters.Add("@y", MySqlDbType.Year, 4, "year");

                

                
                this.adapter.DeleteCommand = delete;
                this.adapter.InsertCommand = insert;
                this.adapter.UpdateCommand = update;

                this.adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
                
            }



            public void GetData(DataGridView f***ing)
            {
                // Retrieve the data.

                
                adapter.Fill(table);

                f***ing.DataSource = table;
                

                // The table can be used here to display and edit the data.
                // That will most likely involve data-binding but that is not a data access issue.
            }

            public void excel(DataGridView datagrid)
            {
                OpenFileDialog ofd = new OpenFileDialog();

                

                if (ofd.ShowDialog() == DialogResult.OK)
                {

                    string path = System.IO.Path.GetFullPath(ofd.FileName);

                    string querry = "SELECT * FROM [Sheet1$]";

                    OleDbConnection conn = new OleDbConnection();

                    conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source = '" + path + "'" + @";Extended Properties=""Excel 8.0;HDR=YES;IMEX=1;ImportMixedTypes=Text;TypeGuessRows=0""";

                    OleDbDataAdapter fag = new OleDbDataAdapter(querry, conn);



                    fag.AcceptChangesDuringFill = false;

                    
                    fag.Fill(table);

                    
                    datagrid.DataSource = table;

                    



                }

                else
                {

                    ofd.Dispose();
                }
            }

            
            public void SaveData()
            {
                // Save the data.
                this.adapter.Update(this.table);
                
            }
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'mbmsDataSet.departments' table. You can move, or remove it, as needed.
            this.departmentsTableAdapter.Fill(this.mbmsDataSet.departments);
            // TODO: This line of code loads data into the 'mbmsDataSet.departments' table. You can move, or remove it, as needed.
            
            sh*t.InitialiseDataAccessObjects();
        }

        private void button2_Click(object sender, EventArgs e)
        {

            sh*t.excel(dataGridView1);   
        }

        private void button3_Click(object sender, EventArgs e)
        {
            sh*t.SaveData();
        }

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