default.aspx.cs

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using System;
using System.Data;
using System.Configuration;
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;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGrid();
        }
    }
    public void BindGrid()
    {
        string sqlstr = "select * from tb_BookInfo";
        SqlConnection myconn = new SqlConnection("server=(local);Database=fangdawei;Uid=sa;Pwd=");
        SqlDataAdapter myda = new SqlDataAdapter(sqlstr,myconn);
        DataSet myds = new DataSet();
        myda.Fill(myds,"tb_BookInfo");
        GridView1.DataSource=myds;
        GridView1.DataKeyNames = new string[] {"BookID"};
        GridView1.DataBind();
    }
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    { 
         //数据库连接
        SqlConnection myconn=new SqlConnection("server=(local);Database=fangdawei;Uid=sa;Pwd=");
        //创建指定删除ID的Sql语句
        string strsql = "delete from tb_BookInfo where BookID=@BookID";
        //创建SqlCommand对象，对SQL语句进行操作
        SqlCommand mycom = new SqlCommand(strsql,myconn);
        try
        {
            //打开数据库
            myconn.Open();
            //添加参数
            mycom.Parameters.Add(new SqlParameter("@BookID", SqlDbType.Int, 4));
            mycom.Parameters["@BookID"].Value = GridView1.DataKeys[e.RowIndex].Value.ToString();
            mycom.ExecuteNonQuery();
            myconn.Close();
            BindGrid();
            Response.Write("<script>alert('删除成功！！！')</script>");
        }
        catch (Exception ex)
        {
            Response.Write("<script>alert('删除失败！！！')</script>");
        }
    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        BindGrid();
    }
}