无法从SQLite数据库检索智能设备应用程序的记录

    private void SetConnection()
    {
        sql_con = new SQLiteConnection(\"Data Source=emp.db;Version=3;\");
    }

    public DataTable LoadData()
    {
        SetConnection();
        sql_con.Open();
        sql_cmd = sql_con.CreateCommand();
        string CommandText = \"select * from employeedetails\";
        transaction=sql_con.BeginTransaction();
        DA = new SQLiteDataAdapter(CommandText, sql_con);
        DS.Reset();
        DA.Fill(DS);
        DT = DS.Tables[0];
        transaction.Commit();
        sql_con.Close();
        return DT;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        EmpTable obj = new EmpTable();     
        this.dataGridView1.DataSource = obj.LoadData();
    }