摘要:GRIDVIEW對資料列編輯&刪除
//資料庫部分
USE [testDB]
GO
/****** Object: Table [dbo].[userinfo] Script Date: 12/02/2012 22:20:46 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[userinfo](
[id] [int] IDENTITY(1,1) NOT NULL,
[username] [varchar](50) NULL,
[password] [varchar](50) NULL,
[birthday] [varchar](50) NULL,
CONSTRAINT [PK_userinfo] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
//aspx部分 <asp:GridView ID="GridView1" runat="server" //以下兩行是產生編輯與刪除按鈕 AutoGenerateDeleteButton="True" AutoGenerateEditButton="True" DataKeyNames="id" //以下四行為事件方法名稱 onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating" onrowcancelingedit="GridView1_RowCancelingEdit" > </asp:GridView>
//cs部分
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
public partial class gridview_test : System.Web.UI.Page
{
string Strcon = WebConfigurationManager.ConnectionStrings["test"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) /*如果省略這句，下面的更新操作將無法完成，因为獲得的值是不變的*/
{
BindData();
}
}
//把資料綁到GridView上
private void BindData()
{
SqlConnection con = new SqlConnection(Strcon);
String sql = "select userinfo.id,username,password,birthday from userinfo";
SqlDataAdapter ad = new SqlDataAdapter(sql, con);
DataSet ds = new DataSet();
ad.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
}
//刪除某列資料
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
SqlConnection con = new SqlConnection(Strcon);
int id = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value);/*獲取主鍵，需要設置 DataKeyNames，這裏設为 id */
String sql = "delete from userinfo where id='" + id + "'";
SqlCommand com = new SqlCommand(sql, con);
con.Open();
com.ExecuteNonQuery();
con.Close();
BindData();
}
/*編輯操作，利用e.NewEditIndex獲取當前編輯行索引*/
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindData(); /*再次绑定顯示編輯行的原數據,不進行绑定要點2次編輯才能跳到編輯狀態*/
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
SqlConnection con = new SqlConnection(Strcon);
String username = (GridView1.Rows[e.RowIndex].Cells[2].Controls[0] as TextBox).Text.ToString(); /*獲取要更新的數據*/
String password = (GridView1.Rows[e.RowIndex].Cells[3].Controls[0] as TextBox).Text.ToString();
String birthday = (GridView1.Rows[e.RowIndex].Cells[4].Controls[0] as TextBox).Text.ToString();
int id = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value);/*獲取主鍵，需要設置 DataKeyNames，這裏設为 id */
String sql = "update userinfo set username='" + username + "',password='" + password + "',birthday='" + birthday + "' where id='" + id + "'";
SqlCommand com = new SqlCommand(sql, con);
con.Open();
com.ExecuteNonQuery();
con.Close();
GridView1.EditIndex = -1;
BindData();
}
//取消編輯
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1; /*編輯索引賦值为-1，變回正常顯示狀態*/
BindData();
}
}