<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ChArea.aspx.cs" Inherits="Personal_ChArea" %><!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 id="Head1" runat="server"> <title>无标题页</title> <base target="_self" /> <link href="css/bjan.css" rel="stylesheet" type="text/css" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><style type="text/css"> <!-- body { background-color: #efefef; } --> </style> <script language="javascript" type="text/javascript"> function Submit1_onclick() {} function load(MC_ID) { var check = document.createElement("input"); check.type= "checkbox"; check.value= "1 ";
var oHttpReq = new ActiveXObject("MSXML2.XMLHTTP"); var oDoc = new ActiveXObject("Microsoft.XMLDOM"); oHttpReq.open("POST", "DropChild.aspx?ClassID="+MC_ID, false); //alert(MC_ID); oHttpReq.send("");
var itemsLength=items1.length; var list = document.getElementById("ckSubClass"); list.children[0].removeNode(true); var row = list.insertRow(); for(i=0;i<itemsLength;i++) { if (i > 0 && i % 4 == 0) { row = list.insertRow(); } var check = document.createElement("input"); check.type="checkbox";
check.value=items2[i].text; var cell=row.insertCell();
<head id="Head1" runat="server">
<title>无标题页</title>
<base target="_self" />
<link href="css/bjan.css" rel="stylesheet" type="text/css" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><style type="text/css">
<!--
body {
background-color: #efefef;
}
-->
</style>
<script language="javascript" type="text/javascript">
function Submit1_onclick() {} function load(MC_ID)
{
var check = document.createElement("input");
check.type= "checkbox";
check.value= "1 ";
var oHttpReq = new ActiveXObject("MSXML2.XMLHTTP");
var oDoc = new ActiveXObject("Microsoft.XMLDOM");
oHttpReq.open("POST", "DropChild.aspx?ClassID="+MC_ID, false);
//alert(MC_ID);
oHttpReq.send("");
result = oHttpReq.responseText;
oDoc.loadXML(result);
items1 = oDoc.selectNodes("//Table/MC_Name");
items2 = oDoc.selectNodes("//Table/MC_ID");
var itemsLength=items1.length;
var list = document.getElementById("ckSubClass");
list.children[0].removeNode(true);
var row = list.insertRow(); for(i=0;i<itemsLength;i++)
{
if (i > 0 && i % 4 == 0)
{
row = list.insertRow();
}
var check = document.createElement("input");
check.type="checkbox";
check.value=items2[i].text;
var cell=row.insertCell();
cell.appendChild(check);
var label = document.createElement("span");
label.innerHTML = items1[i].text;
cell.appendChild(label);
}
}// -->
</script>
</head>
<body>
<form id="form1" runat="server"><br /> <table width="96%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td height="25" bgcolor="#FFFFFF"> <span class="bigbiaoti">请选择求职区域</span></td>
</tr>
<tr>
<td bgcolor="#FFFFFF"><div>
<asp:DropDownList ID="ddlMainClass" runat="server" Width="159px">
</asp:DropDownList><asp:Label ID="lblNum" Text="" runat="server" ></asp:Label><br />
<br />
<asp:CheckBoxList ID="ckSubClass" runat="server" RepeatColumns="4" RepeatDirection="Horizontal"
Width="644px" AutoPostBack="True" OnSelectedIndexChanged="ckSubClass_SelectedIndexChanged"> <asp:ListItem Text= "test1 " Value= "0 " > </asp:ListItem >
</asp:CheckBoxList>
</div></td>
</tr>
<tr>
<td bgcolor="#FFFFFF" style="height: 55px"><table width="98%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td bgcolor="#EFEFEF" style="padding-left:20px; padding-bottom:20px; padding-right:20px; padding-top:20px;"><asp:Label ID="lblJobType" Text="" runat="server" ></asp:Label></td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="35" align="right" bgcolor="#FFFFFF"><input type="submit" name="Submit2" value="确定" id="Submit1" language="javascript" onclick="return Submit1_onclick()" />
<input type="button" name="Submit" value="关闭" onclick="javascript:window.close();"/>
</td>
</tr>
</table> </form>
</body>
</html>
后台：
=================================================================================
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.Web.SessionState;public partial class Personal_ChArea : System.Web.UI.Page
{
//string strTemp = string.Empty;
protected void Page_Load(object sender, EventArgs e)
{
if (!this.Page.IsPostBack)
{
ddlProvinceLoad();
ddlCityLoad();
}
//ckSubClass.SelectedIndexChanged += new System.EventHandler(this.ckSubClass_SelectedIndexChanged);
//ckSubClass.AutoPostBack = true;
} protected void ddlProvinceLoad()
{
Business.ComGetData bc = new Business.ComGetData();
DataTable dt = bc.Province(); this.ddlMainClass.DataSource = dt.DefaultView;
this.ddlMainClass.DataTextField = "MC_Name";
this.ddlMainClass.DataValueField = "MC_ID";
this.ddlMainClass.DataBind();
this.ddlMainClass.Attributes.Add("onchange", "load(this.options[this.selectedIndex].value)"); } protected void ddlCityLoad()
{
Business.ComGetData bc = new Business.ComGetData(); bc.Commond = this.ddlMainClass.SelectedItem.Text.ToString(); this.ckSubClass.DataSource = bc.CommonInfo().Tables[0].DefaultView;
this.ckSubClass.DataTextField = "MC_Name";
this.ckSubClass.DataValueField = "MC_ID";
this.ckSubClass.DataBind();
} protected void ckSubClass_SelectedIndexChanged(object sender, EventArgs e)
{
string s = string.Empty;
if (Session["Temp"] != null)
{
lblJobType.Text = Session["Temp"].ToString();
}
int k = 0;
//s = "";
for (int i = 0; i < ckSubClass.Items.Count; i++)
{
if (ckSubClass.Items[i].Selected)
{
if (s == "")
{
s = ckSubClass.Items[i].Text;
}
else
{
s = s + " , " + ckSubClass.Items[i].Text;
}
//lblJobType.Text = ckSubClass.Items[i].Text + " , ";
k = i;
}
} int nCount = 0;
for (int j = 0; j < s.Length; j++)
{
if (s[j].ToString() == ",")
{
nCount++;
}
} if (nCount > 4)
{
//Response.Write("哈哈哈哈");
Response.Write("<script language=javascript>alert('最多选择5个地区！');</script>");
ckSubClass.Items[k].Selected = false;
return;
}
//if (Session["Temp"] == null)
//{
Session["Temp"] = s;
//}
//else
//{
// Session["Temp"] += s;
//} lblJobType.Text = s;
}
}
实现DropDownList与CheckBoxList联动的时候是无刷新的！
在选择CheckBox时刷新了！
把判断教给前台javascript
function maxchk(obj)
{
var txt=document.getElementById("textboxid");//用来显示选择信息的textbox
var arr=document.getElementByName("checkboxlist");//取出checkbox集合
var num=0;
for(var i=0;i<arr.length;i++)
{
if(arr[i].checked)
{
num=num+1;
}
}
if(num>5)
{
应该不用写了吧。
}
}
下班了 晚上有空再写写玩---------------------------------------------------------------------------
谢谢~~~~=================================================================================
qi_ting(奶牛)
选择CheckBox时刷新了？你是用了AJAX的无刷新技术吗？
--------------------------------------------------------------------------------
选择CheckBox时用的 SelectedIndexChanged 在后台处理的,我想在Client处理,实现无刷新!
name="checkboxlist" 不用设
页面上放个TextBox id="textbox1"
function maxchk(obj)
{
var txt=document.getElementById("textbox1");
var arr=document.all.tags("input");//取出checkbox集合
var num=0;
for(var i=0;i<arr.length;i++)
{
if(arr[i].type=="checkbox")//
{
if(arr[i].checked)
{
num=num+1;
if(txt.value=="")
{
txt.innerText=arr[i].text;
}
else
{
txt.innerText+=","+arr[i].text;
}
}
}
}
if(num>5)
{
window.alert("超过5个");
obj.checked=false;
}
}
每个checkbox的 onclick="maxchk(this)" 就可以了
我试试
不好意思，上面有点说错了
name="checkboxlist" 不用设
页面上放个TextBox id="textbox1"
function maxchk(obj)
{
var txt=document.getElementById("textbox1");
var arr=document.all.tags("input");//取出checkbox集合
var num=0;
for(var i=0;i<arr.length;i++)
{
if(arr[i].type=="checkbox")//
{
if(arr[i].checked)
{
num=num+1;
if(txt.value=="")
{
txt.innerText=arr[i].text;
}
else
{
txt.innerText+=","+arr[i].text;
}
}
}
}
if(num>5)
{
window.alert("超过5个");
obj.checked=false;
}
}
每个checkbox的 onclick="maxchk(this)" 就可以了============================================================================有问题~
显示的是这样~
,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined
换成 arr[i].value
嘎嘎
昨天下班赶时间，没测过-_-!
for(i=0;i<itemsLength;i++)
{
if (i > 0 && i % 4 == 0)
{
row = list.insertRow();
}
var check = document.createElement("input");
check.type="checkbox";
check.value=items2[i].text;
var cell=row.insertCell();
cell.appendChild(check);
var label = document.createElement("span");
label.innerHTML = items1[i].text;
cell.appendChild(label);
}
}arr[i].value的值正常!
已经选了五项,选第六项时,第六项的选中状态无法去掉!
每次的值不是加的一项的,而是将前面的项的值累加起来显示了！
1244,1244,1245,1244,1245,1249,1244,1245,1249,1244,1245,1249,1253,1244,1245,1249,1250,1253,1244,1245,1246,1249,1250,1253
每次的值不是加的一项的,而是将前面的项的值累加起来显示了！
1244,1244,1245,1244,1245,1249,1244,1245,1249,1244,1245,1249,1253,1244,1245,1249,1250,1253,1244,1245,1246,1249,1250,1253
==============================================
看下你的生成页面的源码 onclick="maxchk(this)" 是加到什么地方了？
{
if (!this.Page.IsPostBack)
{
ddlProvinceLoad();
ddlCityLoad();
}
this.ckSubClass.Attributes.Add("OnClick", "maxchk(this)" );
}
你应该是加到了checkboxlist上了
难怪了
我再想想
这样的话
你应该是加到了checkboxlist上了
难怪了
我再想想＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
谢谢～
================================================
你的意思是不是，把选中的地区放到一个textbox里面，用逗号区分开，只能有5个对不对？
如果可以给每个checkbox加onclick事件
还是给每个checkbox加onclick事件方便点
ajax我没用过，不清楚你为什么在checkboxlist上加onclick
如果可以给每个checkbox加onclick事件
还是给每个checkbox加onclick事件方便点 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
怎么给给每个checkbox加onclick事件
我用的就是checkboxlist～～～
javascript论坛才应该讨论的问题。 ------------------------------------------------------------------------
晕,原来我发错了地方???????????