Импорт данных из Excel в sql с возможностью редактирования в DGV

public partial class Form5 : Form
{
DataSet ds = new DataSet("EXCEL");
SqlDataAdapter adapter_depository = new SqlDataAdapter();
string connectionString = @"Data Source=DESKTOP-NHM416E;Initial Catalog= name;Integrated Security=true";
 
 
public Form5()
{
InitializeComponent();
dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dataGridView1.AllowUserToAddRows = false;
}
 
private void button1_Click(object sender, EventArgs e)
{
 
OpenFileDialog opf = new OpenFileDialog();
opf.Filter = "Excel (*.XLS)|*.XLS";
opf.ShowDialog();
 
string filename = opf.FileName;
string ConStr = String.Format("Provider=Microsoft.Jet.OLEDB.4.0; Data Source={0}; Extended Properties=Excel 8.0;", filename);
OleDbConnection cn = new OleDbConnection(ConStr);
cn.Open();
DataTable schemaTable = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
string sheet1 = (string)schemaTable.Rows[0].ItemArray[2];
string select = String.Format("SELECT * FROM [{0}]", sheet1);
OleDbDataAdapter ad = new OleDbDataAdapter(select, cn);
ad.Fill(ds);
dataGridView1.DataSource = ds.Tables[0];
cn.Close();
}
 
private void button2_Click(object sender, EventArgs e)
{
 
using (SqlConnection connection = new SqlConnection(connectionString))
{
 
connection.Open();
 
 
SqlDataAdapter adapter_depository = new SqlDataAdapter("SELECT * FROM Depository", connection);
 
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(adapter_depository);
adapter_depository.InsertCommand = new SqlCommand("sp_CreateDepository", connection);
adapter_depository.InsertCommand.CommandType = CommandType.StoredProcedure;
 
//adapter_depository.InsertCommand = new SqlCommand("INSERT INTO Depository (article, title, count, price, trade_price) VALUES (@article, @title, @count, @price, @trade_price)", connection);
adapter_depository.InsertCommand.Parameters.Add(new SqlParameter("@article", SqlDbType.NVarChar, 50, "article"));
adapter_depository.InsertCommand.Parameters.Add(new SqlParameter("@title", SqlDbType.NVarChar, 50, "title"));
adapter_depository.InsertCommand.Parameters.Add(new SqlParameter("@count", SqlDbType.Int, 0, "count"));
adapter_depository.InsertCommand.Parameters.Add(new SqlParameter("@price", SqlDbType.Real, 0, "price"));
adapter_depository.InsertCommand.Parameters.Add(new SqlParameter("@trade_price", SqlDbType.Real, 0, "trade_price"));
 
 
//adapter_depository.UpdateCommand = new SqlCommand("UPDATE Depository title = @title, count = @count, price = @price, trade_price = @trade_price", connection);
adapter_depository.Update(dataGridView1.DataSource as DataTable);
 
 
connection.Close();
}
}
}