各位大哥，帮我看看：
            gridBindingSource = new System.Windows.Forms.BindingSource();        //生成绑定对象
            siteDataSet = new System.Data.DataSet("siteDataSet");               //生成DateSet
            System.Data.OleDb.OleDbCommand cmd = new System.Data.OleDb.OleDbCommand(); //生成命令
             = "SELECT * FROM tbSiteInfo";
            cmd.Connection = this.tbSiteInfoTableAdapter.Connection;
            tbSiteAdapter = new System.Data.OleDb.OleDbDataAdapter(cmd);              //生成Adapter对象
            System.Data.OleDb.OleDbCommandBuilder oleCmd = new System.Data.OleDb.OleDbCommandBuilder(tbSiteAdapter);
            tbSiteAdapter.Fill(siteDataSet, "tbSiteInfo");        //填充DateSet

            gridBindingSource.DataSource = siteDataSet;
            gridBindingSource.DataMember = "tbSiteInfo";       //为绑定对象设置数据源

            siteBindingNavigator.BindingSource= gridBindingSource;    //为导航条设置绑定源
            //siteBindingNavigator.BindingSource.DataMember = "tbSiteInfo";

            textBox1.DataBindings.Add("text", gridBindingSource, "siteName", true);
            textBox2.DataBindings.Add("text", gridBindingSource, "H3CIP", true);
            textBox3.DataBindings.Add("text", gridBindingSource, "GPSIP", true);
            textBox4.DataBindings.Add("text", gridBindingSource, "NASIP", true);   /为四个box对象设置绑定

在导航按钮的保存功能中编写了一下代码：

            this.Validate();
            gridBindingSource.EndEdit();
            tbSiteAdapter.Update(siteDataSet, "tbSiteInfo");

但保存不了，数据库里添加记录后，打开数据表，还是没变化，请问是我哪里做错了吗？

您好，我刚才试了，它是BindingSource对象，，没有你说的这个函数啊

搞清楚了，在调试模式下，添加的记录在调试完成后会删除，其实功能已经实现了，晕倒