这种方式处理后，服务器端得不到ListBox的数据，可放一个隐藏控件，将ListBox的值放在里面，服务器端取隐藏控件的值。
1
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="test.WEB_APP.WebForm4" %>
2
3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<html xmlns="http://www.w3.org/1999/xhtml" >
6<head runat="server">
7 <title>无标题页</title>
8 <script language="javascript" type="text/javascript">
9
var ObjFrom,ObjTo;
10 function intial(objFrom,objTo)
11
{
12 ObjFrom = rtObject(objFrom);
13 ObjTo = rtObject(objTo);
14
}
15 //返回ListBox对象
16 function rtObject(obj)
17 {
18 return document.form1.elements[obj];
19 }
20 function AddItem(lbFrom,lbTo)
21 {
22 intial(lbFrom,lbTo);
23 var fromCount = ObjFrom.options.length;
24 if (fromCount==0)
25 {
26 alert("没有可供选择的数据");
27 return;
28 }
29 for(var h=0;h<fromCount;h++)
30 {
31 if (ObjFrom.options[h].selected )
32 {
33 var selectValue = ObjFrom.options[h].value;
34 var selectText = ObjFrom.options[h].text;
35 var toCount = ObjTo.options.length;
36 var bool_ = false;
37 for (k=0; k<toCount; k++ )
38 {
39 if (ObjTo.options[k].value == selectValue)
40 {
41 bool_ = true;
42 break;
43 }
44 }
45 if ( bool_ == false)
46 {
47 ObjTo.options[toCount] = new Option(selectValue, selectText);
48 DeletSingle(ObjFrom,h);
49 break;
50 }
51 }
52 }
53 }
54 function DelItem(lbTo,lbFrom)
55 {
56 intial(lbTo,lbFrom);
57 var minSelected=0;
58 for (var i=ObjFrom.length-1; i>=0; i--)
59 {
60 if (ObjFrom.options[i].selected)
61 {
62 if (minSelected==0 || i<minSelected)
63 {
64 minSelected=i;
65 AddItem(lbTo,lbFrom);
66 break;
67 }
68 }
69 }
70 var i=ObjFrom.length;
71 if (i>0)
72 {
73 minSelected=i-1;
74 ObjFrom.options[minSelected].selected=true;
75 }
76 }
77 function AddItemAll(lbFrom,lbTo)
78 {
79 intial(lbFrom,lbTo);
80 var fromCount = ObjFrom.options.length;
81 if (fromCount==0)
82 return;
83 for(var h=0;h<fromCount;h++)
84 {
85 var code = ObjFrom.options[h].value;
86 var value = ObjFrom.options[h].text;
87 var toCount = ObjTo.options.length;
88 ObjTo.options[toCount] = new Option(value, code);
89 }
90 //删除所有项
91 for(var h=fromCount;h>=0;h--)
92 {
93 DeletSingle(ObjFrom,h);
94 }
95 }
96 //删除单个项
97 function DeletSingle(obj,index)
98 {
99 obj.options[index] = null;
100 }
101 //将选择的值放入隐藏控件
102 function getValues()
103 {
104 var ObjHid = document.getElementById('hidValue');
105 ObjHid.value = "";
106 var m = ObjTo.options.length;
107
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="test.WEB_APP.WebForm4" %>
2
3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<html xmlns="http://www.w3.org/1999/xhtml" >6
<head runat="server">7
<title>无标题页</title>8
<script language="javascript" type="text/javascript">9
var ObjFrom,ObjTo;10
function intial(objFrom,objTo)11
{
12
ObjFrom = rtObject(objFrom);13
ObjTo = rtObject(objTo);14
}15
//返回ListBox对象16
function rtObject(obj)17
{18
return document.form1.elements[obj];19
}20
function AddItem(lbFrom,lbTo)21
{22
intial(lbFrom,lbTo);23
var fromCount = ObjFrom.options.length;24
if (fromCount==0)25
{26
alert("没有可供选择的数据");27
return;28
}29
for(var h=0;h<fromCount;h++)30
{31
if (ObjFrom.options[h].selected )32
{33
var selectValue = ObjFrom.options[h].value;34
var selectText = ObjFrom.options[h].text; 35
var toCount = ObjTo.options.length;36
var bool_ = false;37
for (k=0; k<toCount; k++ ) 38
{39
if (ObjTo.options[k].value == selectValue)40
{ 41
bool_ = true;42
break;43
}44
}45
if ( bool_ == false)46
{47
ObjTo.options[toCount] = new Option(selectValue, selectText);48
DeletSingle(ObjFrom,h);49
break;50
}51
}52
}53
}54
function DelItem(lbTo,lbFrom)55
{56
intial(lbTo,lbFrom); 57
var minSelected=0; 58
for (var i=ObjFrom.length-1; i>=0; i--)59
{ 60
if (ObjFrom.options[i].selected)61
{ 62
if (minSelected==0 || i<minSelected)63
{ 64
minSelected=i;65
AddItem(lbTo,lbFrom);66
break;67
}68
}69
}70
var i=ObjFrom.length;71
if (i>0) 72
{73
minSelected=i-1;74
ObjFrom.options[minSelected].selected=true;75
}76
}77
function AddItemAll(lbFrom,lbTo)78
{79
intial(lbFrom,lbTo);80
var fromCount = ObjFrom.options.length;81
if (fromCount==0)82
return;83
for(var h=0;h<fromCount;h++)84
{85
var code = ObjFrom.options[h].value;86
var value = ObjFrom.options[h].text; 87
var toCount = ObjTo.options.length;88
ObjTo.options[toCount] = new Option(value, code);89
}90
//删除所有项91
for(var h=fromCount;h>=0;h--)92
{93
DeletSingle(ObjFrom,h);94
}95
}96
//删除单个项97
function DeletSingle(obj,index)98
{ 99
obj.options[index] = null;100
}101
//将选择的值放入隐藏控件102
function getValues()103
{104
var ObjHid = document.getElementById('hidValue');105
ObjHid.value = "";106
var m = ObjTo.options.length;107