DataGridView没有保存到数据库

我正在创建一个简单的员工目录程序，这样用户就可以更新目录。但是，在当前向DataGridView添加数据时，它不会保存到数据库中。我知道需要this.staffTableAdapter.Update(this.dBDataSet1.Staff);，它在我的程序中，如下所示。

我只是不确定我现在错过了什么，如果有人能帮助我，我会很感激的。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace StaffDirectory
{
    public partial class Administration : Form
    {
        public Administration()
        {
            InitializeComponent();
        }
        private void staffBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            this.Validate();
            this.staffBindingSource.EndEdit();
            this.staffTableAdapter.Update(this.dBDataSet1.Staff);
        }
        private void Administration_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'dBDataSet1.Staff' table. You can move, or remove it, as needed.
            this.staffTableAdapter.Fill(this.dBDataSet1.Staff);
        }
    }
}

private void staffBindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
    try{
       this.Validate();
       this.staffBindingSource.EndEdit();
       this.staffTableAdapter.Update(this.dBDataSet1.Staff);
    }
    catch(Exception ex) {}
}