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asp.net 全部选中与取消操作,选中后的删除(ajax)实现无刷新效果 ...

2022-2-5 17:01| 发布者: 菜鸟教程小白| 查看: 277| 评论: 0|原作者: [db:作者]|来自: [db:来源]

摘要: 现在我们在编程的时刻总是要利用一些最新的技术去解决问题。。。。下面是我用ajax与jequery结合在一起使用的一个实例。希能给一起学习的朋友们带来帮助。 ...

前台代码

:<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head runat="server"> 
<title>用户信息操作</title> 
<script language="javascript" type="text/javascript" src="ajax/jquery.js"></script> 
<script language="javascript" type="text/javascript"> 
//页面的初始化 
$(document).ready( function(){ loadUserInfo(); }); 
//加载用户信息到页面 
function loadUserInfo() 
{ 
$.ajax( 
{ 
type:"POST", 
url:"Default.aspx", 
data:{action:'action'}, 
success:loadUserInfoCallbace 
} 
); 
} 
//页面初始化回调函数 
function loadUserInfoCallbace(r) 
{ 
if(r=="") 
{ 
$("#userInfo").html("暂无数据"); 
} 
else 
{ 
$("#userInfo").html(r); 
} 
} 
//全部选中 
function CheckAll(obj) 
{ 
$("input[@type=checkbox][@name=checkItem]").attr("checked",$(obj).attr("checked")); 
} 
//收集所有选中项 
function NumberID() 
{ 
var allcheckboxs=$("input[@type=checkbox][@name=checkItem][checked]"); 
var ids=""; 
for(i=0;i<allcheckboxs.length;i++) 
{ 
var id=$(allcheckboxs[i]).attr("id").split("_")[1]; 
ids+=id; 
ids+=","; 
} 
return ids; 
} 
//删除用户 
function DeleteUser() 
{ 
if(!window.confirm("您真的要删除选中用户信息吗?")) 
{ 
return; 
} 
var ids=NumberID(); 
$.ajax({ 
type:'POST', 
url:'Default.aspx', 
data:{action:'Delete',userid:ids}, 
success:deleteUserCall 
}); 
} 
//删除用户回调函数 
function deleteUserCall(r) 
{ 
if(r=="ok") 
{ 
alert("删除成功"); 
loadUserInfo(); 
} 
else 
{ 
alert("失败"); 
} 
} 
</script> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div style="text-align:center" id="userInfo"> 
</div> 
</form> 
</body> 
</html>

后台代码:

复制代码代码如下:

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; 
using System.Text; 
public partial class _Default : System.Web.UI.Page 
{ 
string Straction = ""; 
protected void Page_Load(object sender, EventArgs e) 
{ 
Straction = Request["action"]; 
if(Straction=="action") 
{ 
UserInfo(); 
} 
if (Straction == "Delete") 
{ 
DeleteUser(); 
} 
} 
/// <summary> 
/// 周昕 2009-6-8号加载用户详细信息 
/// </summary> 
public void UserInfo() 
{ 
SqlConnection mycon = new SqlConnection(); 
mycon.ConnectionString = ConfigurationManager.ConnectionStrings["BoBoConn"].ToString(); 
string sql = "select * from loginuser"; 
SqlCommand mycom = new SqlCommand(sql, mycon); 
mycon.Open(); 
SqlDataReader myda = mycom.ExecuteReader(); 
StringBuilder str = new StringBuilder(); 
str.Append("<table><tr><td><input id='checkall' name='checkall' type='checkbox' onclick='CheckAll(this)'/>全选</td><td>用户名</td><td>用户全名</td></tr>"); 
while (myda.Read()) 
{ 
str.Append("<tr><td>"); 
str.Append("<input id='checkItem_" + myda["ID"].ToString() + "' type='checkbox' name='checkItem' style='text-align='left' onclick=' NumberID()'/></td>"); 
str.Append("<td>" + myda["UserName"].ToString() + "</td>"); 
str.Append("<td>" + myda["FullName"].ToString() + "</td></tr>"); 
} 
str.Append("</table>"); 
str.Append(" <div style=' text-align:center'><input type='button' value='删除' onclick='DeleteUser()' /></div>"); 
Response.Clear(); 
Response.ContentType = "application/text"; 
Response.Write(str); 
Response.End(); 
} 
/// <summary> 
/// 周昕 2009-6-8 删除选中用户的详细信息 
/// </summary> 
public void DeleteUser() 
{ 
//获取用户ID 
string strID = Request["userid"]; 
string Userid = strID.Substring(0, strID.Length - 1); 
//转换成为数组 
string[] stridArray = Userid.Trim().Split(','); 
string sql = "delete from loginuser where ID='" + stridArray[0].ToString() + "'"; 
for (int i = 0; i < stridArray.Length; i++) 
{ 
string id = stridArray[i].ToString(); 
sql += "or ID='" + id + "'"; 
} 
SqlConnection mycon = new SqlConnection(); 
mycon.ConnectionString = ConfigurationManager.ConnectionStrings["BoBoConn"].ToString(); 
mycon.Open(); 
SqlCommand mycom = new SqlCommand(sql, mycon); 
int n = (int)mycom.ExecuteNonQuery(); 
mycon.Close(); 
if (n > 0) 
{ 
Response.Clear(); 
Response.ContentType = "application/text"; 
Response.Write("ok"); 
Response.End(); 
} 
else 
{ 
Response.Clear(); 
Response.ContentType = "application/text"; 
Response.Write("no"); 
Response.End(); 
} 
} 
} 