原文发布时间为：2008-08-01 —— 来源于本人的百度文章 [由搬家工具导入]

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

//gridview无数据源实现更新（断开更新）拖放一个gridview时没有编辑这个项，应该把它的属性AutoGeneraltedEditButton这个属性改成true，这样编辑这个链接就会出现

public partial class Default3 : System.Web.UI.Page
{
    SqlConnection conn = new SqlConnection("Server=.\\SQLEXPRESS;Database=test;uid=sa;pwd=123456");
   
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            Bind();

    }
    private void Bind()
    {
        SqlDataAdapter sda = new SqlDataAdapter("select * from stu", conn);
        DataSet ds = new DataSet();
        sda.Fill(ds, "temp");
        GridView1.DataSource = ds.Tables["temp"].DefaultView;
        GridView1.DataBind();
    }
    private void fill(int id, string name, string banji)
    {
        SqlDataAdapter sda = new SqlDataAdapter("select * from stu", conn);
        SqlCommandBuilder scbld = new SqlCommandBuilder(sda);//因为有这句，所以关闭连接后也能更新

        DataSet ds = new DataSet();
        sda.Fill(ds, "temp");
        ds.Tables["temp"].DefaultView.Sort = "id";
        int index = ds.Tables["temp"].DefaultView.Find(id);
        ds.Tables["temp"].Rows[index]["name"] = name;
        ds.Tables["temp"].Rows[index]["class"] = banji;

        int rows = sda.Update(ds, "temp");

        Response.Write("update " + rows + " rows datas");
    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        int index = e.RowIndex;
        int id = Convert.ToInt32(GridView1.Rows[index].Cells[1].Text);
        string name = ((TextBox)GridView1.Rows[index].Cells[2].FindControl("TextBox1")).Text;
        string banji = ((TextBox)GridView1.Rows[index].Cells[3].FindControl("TextBox2")).Text;
        fill(id, name, banji);
        GridView1.EditIndex = -1;
        Bind();
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        Bind();
    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        Bind();
    }
}

gridview无数据源实现更新数据库（即断开更新数据库）