Update Excel file to sql ช่วยแก้โค้ดให้สามารถ Update หน่อยนะค่ะ

 private void btnUpdate_Click(object sender, EventArgs e)
        {

            //Table Name
        string EXCELSQLTable = "test";

       string ExcelData = "Select * from [test$]";
      
       
        //Excel File Path 
        string ExcelFilePath=lblPathFile.Text;

        try
        {

            string ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + ExcelFilePath + ";Extended Properties=Excel 12.0;Persist Security Info=False;";


            OleDbConnection OleDbCnn = new OleDbConnection(ConnectionString);

            OleDbCnn.Open();

            SqlBulkCopy bulkCopy = new SqlBulkCopy(strConn);

            bulkCopy.DestinationTableName = EXCELSQLTable;


            using (OleDbDataAdapter X = new OleDbDataAdapter(ExcelData, OleDbCnn))
            {

                DataTable SQLT = new DataTable();
                X.Fill(SQLT);
                bulkCopy.WriteToServer(SQLT);

                OleDbCnn.Close();
                MessageBox.Show("Data Imported Successfully");

            }
        }
        catch (Exception ee)
        {

            label2.Text = ee.Message;

        }
 
     }
   }