经常有页面列出一个数据列表,点击添加、修改的时候呢,就弹出一个窗口,在弹出的窗口里进行数据管理,然后呢,返回,返回后,原来的窗口里的数据列表要重新刷新
这里说的就是这个东西
要解决的问题三个:
1、是使用window.open还是使用window.showModalDialog?
2、如果使用showModalDialog,怎么提交数据到服务器?
3、刷新原窗口
解决问题:
1、使用模态窗口在任务栏不会有新的窗口出现,他是属于原窗口的,在操作模态窗口的时候,原窗口不可以被操作,嗯,相当于在pb里用打开一个response!的窗口,所以选window.showModalDialog是最好的
2、使用window.showModalDialog的时候,提交数据时有点怪,问题在这里:http://www.tiantiansoft.com/bbs/dispbbs.asp?boardID=40&ID=144093,就是没办法提交数据回服务器
我不知道showModalDialog的运行机制,在http://www.tiantiansoft.com/bbs/dispbbs.asp?BoardID=40&id=94373我查到过这一段,这一段是哪里的,我不知道了,在dhtml.chm里,有这一段的英文版,我先记下来
Javascript有许多内建的方法来产生对话框,如:window.alert(), window.confirm(),window.prompt().等。 然而IE提供更多的方法支持对话框。如:
showModalDialog() (IE 4+ 支持)
showModelessDialog() (IE 5+ 支持)
window.showModalDialog()方法用来创建一个显示HTML内容的模态对话框,由于是对话框,因此它并没有一般用window.open()打开的窗口的所有属性。
window.showModelessDialog()方法用来创建一个显示HTML内容的非模态对话框。
当我们用showModelessDialog()打开窗口时,不必用window.close()去关闭它,当以非模态方式[IE5]打开时, 打开对话框的窗口仍可以进行其他的操作,即对话框不总是最上面的焦点,当打开它的窗口URL改变时,它自动关闭。而模态[IE4]方式的对话框始终有焦点(焦点不可移走,直到它关闭)。模态对话框和打开它的窗口相联系,因此我们打开另外的窗口时,他们的链接关系依然保存,并且隐藏在活动窗口的下面。
使用方法如下:
vReturnValue = window.showModalDialog(sURL [, vArguments] [, sFeatures])
vReturnValue = window.showModelessDialog(sURL [, vArguments] [, sFeatures])
参数说明:
sURL
必选参数,类型:字符串。用来指定对话框要显示的文档的URL。
vArguments
可选参数,类型:变体。用来向对话框传递参数。传递的参数类型不限,包括数组等。对话框通过window.dialogArguments来取得传递进来的参数。
sFeatures
可选参数,类型:字符串。用来描述对话框的外观等信息,可以使用以下的一个或几个,用分号“;”隔开。
dialogHeight 对话框高度,不小于100px,IE4中dialogHeight 和 dialogWidth 默认的单位是em,而IE5中是px,为方便其见,在定义modal方式的对话框时,用px做单位。
dialogWidth: 对话框宽度。
dialogLeft: 距离桌面左的距离。
dialogTop: 离桌面上的距离。
center: {yes | no | 1 | 0 }:窗口是否居中,默认yes,但仍可以指定高度和宽度。
help: {yes | no | 1 | 0 }:是否显示帮助按钮,默认yes。
resizable: {yes | no | 1 | 0 } [IE5+]:是否可被改变大小。默认no。
status: {yes | no | 1 | 0 } [IE5+]:是否显示状态栏。默认为yes[ Modeless]或no[Modal]。
scroll:{ yes | no | 1 | 0 | on | off }:指明对话框是否显示滚动条。默认为yes。
还有几个属性是用在HTA中的,在一般的网页中一般不使用。
dialogHide:{ yes | no | 1 | 0 | on | off }:在打印或者打印预览时对话框是否隐藏。默认为no。
edge:{ sunken | raised }:指明对话框的边框样式。默认为raised。
unadorned:{ yes | no | 1 | 0 | on | off }:默认为no。
传入参数:
要想对话框传递参数,是通过vArguments来进行传递的。类型不限制,对于字符串类型,最大为4096个字符。也可以传递对象,例如:
test1.htm
====================
<script>
var mxh1 = new Array("mxh","net_lover","孟子E章")
var mxh2 = window.open("about:blank","window_mxh")
// 向对话框传递数组
window.showModalDialog("test2.htm",mxh1)
// 向对话框传递window对象
window.showModalDialog("test3.htm",mxh2)
</script>
test2.htm
====================
<script>
var a = window.dialogArguments
alert("您传递的参数为:" + a)
</script>
test3.htm
====================
<script>
var a = window.dialogArguments
alert("您传递的参数为window对象,名称:" + a.name)
</script>
可以通过window.returnValue向打开对话框的窗口返回信息,当然也可以是对象。例如:
test4.htm
===================
<script>
var a = window.showModalDialog("test5.htm")
for(i=0;i<a.length;i++) alert(a[i])
</script>
test5.htm
===================
<script>
function sendTo()
{
var a=new Array("a","b")
window.returnValue = a
window.close()
}
</script>
<body>
<form>
<input value="返回" type=button onclick="sendTo()">
</form>
下面是我解决使用showModalDialog没办法提交数据回服务器的办法:
①给模态窗口加上窗口名:
<script language="JavaScript">
window.name="MyModalDialog";
</script>
②设置模态窗口提交数据回服务器的时候,提交回本窗口
<form id="form1" runat="server" target="MyModalDialog">
两步,就可以解决这个问题了
3、处理完数据返回时,如果要返回数据到原窗口,那就使用上面我引回来的一大段里的例子,如果不用返回数据到原窗口,就直接刷新原窗口,使用js:window.location.reload();
我是这样打开窗口,刷新数据的:
Literal1.Text = "<p>尚无分类,请<a href=\"#\" onclick=\"window.showModalDialog('ClassAdd.aspx?classid=0&down=0&add=1');window.location.reload();\">添加</a>";
我给出我的两个页面的完整测试代码,在测试中,我测试了直接放在页面上的DropDownList和放在FormView里的DropDownList:

dropdownlist.aspx

<%
@ Page Language
=
"
C#
"
AutoEventWireup
=
"
true
"
CodeFile
=
"
dropdownlist.aspx.cs
"
Inherits
=
"
test_dropdownlist
"
%>

<!
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
>
使用模态窗口返回数据,刷新DropDownList
</
title
>
</
head
>
<
body
>
<
form id
=
"
form1
"
runat
=
"
server
"
>
<
div
>
<
script type
=
"
text/javascript
"
>
function openwin()

{
var win = showModalDialog("dropdownlist2.aspx", "", "dialogWidth:350px; dialogHeight:300px; status:0; help:0");
if (win != null)

{
alert(win);
var controlID, control;
controlID="<% =this.hfAddListItem.ClientID %>";
control=document.getElementById(controlID);
control.value=win;
form1.submit();
}
}
</
script
>
<
input id
=
"
Button1
"
type
=
"
button
"
value
=
"
打开模态窗口
"
onclick
=
"
openwin();
"
/>
<
asp:Label ID
=
"
Label1
"
runat
=
"
server
"
></
asp:Label
>
<
br
/>
数据:
<
asp:TextBox ID
=
"
TextBox1
"
runat
=
"
server
"
></
asp:TextBox
>
<
asp:RequiredFieldValidator ID
=
"
RequiredFieldValidator1
"
runat
=
"
server
"
ControlToValidate
=
"
TextBox1
"
ErrorMessage
=
"
请输入数据
"
></
asp:RequiredFieldValidator
><
br
/>
服务器端列表:
<
asp:DropDownList ID
=
"
DropDownList1
"
runat
=
"
server
"
>
<
asp:ListItem
>
第一项
</
asp:ListItem
>
</
asp:DropDownList
>
<
asp:Button ID
=
"
Button3
"
runat
=
"
server
"
OnClick
=
"
Button3_Click
"
Text
=
"
刷新
"
/><
br
/>
<
asp:Button ID
=
"
Button2
"
runat
=
"
server
"
Text
=
"
提交数据到服务器
"
OnClick
=
"
Button2_Click
"
/>
<
asp:HiddenField ID
=
"
hfAddListItem
"
runat
=
"
server
"
/>
<
asp:SqlDataSource ID
=
"
sdsAdd
"
runat
=
"
server
"
ConnectionString
=
"
<%$ ConnectionStrings:TTOAConnectionString %>
"
InsertCommand
=
"
insert into t_table (bb) values (@bb)
"
SelectCommand
=
"
select tid,bb from t_table where tid=0
"
>
<
InsertParameters
>
<
asp:Parameter Name
=
"
bb
"
/>
</
InsertParameters
>
</
asp:SqlDataSource
>
<
asp:FormView ID
=
"
FormView1
"
runat
=
"
server
"
DataKeyNames
=
"
tid
"
DataSourceID
=
"
sdsAdd
"
DefaultMode
=
"
Insert
"
>
<
InsertItemTemplate
>
数据:
<
asp:TextBox ID
=
"
bbTextBox
"
runat
=
"
server
"
Text
=
'
<%# Bind("bb") %>
'
></
asp:TextBox
>
<
br
/>
列表:
<
asp:DropDownList ID
=
"
DropDownList2
"
runat
=
"
server
"
></
asp:DropDownList
>
<
br
/>
<
asp:Button ID
=
"
InsertButton
"
runat
=
"
server
"
CausesValidation
=
"
True
"
CommandName
=
"
Insert
"
Text
=
"
插入
"
></
asp:Button
>
</
InsertItemTemplate
>
</
asp:FormView
>
</
div
>
</
form
>
</
body
>
</
html
>

dropdownlist.aspx.cs

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;

public
partial
class
test_dropdownlist : System.Web.UI.Page

{
protected void Page_Load(object sender, EventArgs e)

{
if (IsPostBack)

{
string tvStr;
tvStr = hfAddListItem.Value;
if (tvStr.Length > 0)

{
string[] tv;
string[] text;
string[] value;
tv = tvStr.Split('*');
text = tv[0].Split('|');
value = tv[1].Split('|');
int i, n;
n = text.Length;
for (i = 0; i < n; i++)

{
DropDownList1.Items.Add(new ListItem(text[i], value[i]));
}
//刷新FormView里的DropDownList
DropDownList ddl = new DropDownList();
ddl = (DropDownList)FormView1.FindControl("DropDownList2");
if (ddl != null)

{
for (i = 0; i < n; i++)

{
ddl.Items.Add(new ListItem(text[i], value[i]));
}
}
//把hidden控件置空
hfAddListItem.Value = "";
}
}
}
protected void Button2_Click(object sender, EventArgs e)

{
//提交数据
string s;
s = TextBox1.Text;
s += "<br>共有列表:" + DropDownList1.Items.Count.ToString();
Label1.Text=s;
}
protected void Button3_Click(object sender, EventArgs e)

{
string tvStr;
tvStr = TextBox1.Text;
if (tvStr.Length > 0)

{
string[] tv;
string[] text;
string[] value;
tv = tvStr.Split('*');
text = tv[0].Split('|');
value = tv[1].Split('|');
int i, n;
n = text.Length;
for (i = 0; i < n; i++)

{
DropDownList1.Items.Add(new ListItem(text[i], value[i]));
}
}
}
}

dropdownlist2.aspx

<%
@ Page Language
=
"
C#
"
AutoEventWireup
=
"
true
"
CodeFile
=
"
dropdownlist2.aspx.cs
"
Inherits
=
"
test_dropdownlist2
"
%>

<!
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
>
dropdownlist的模态窗口
</
title
>
<
script language
=
"
JavaScript
"
>
window.name
=
"
MyModalDialog
"
;
</
script
>
</
head
>
<
body
>
<
form id
=
"
form1
"
runat
=
"
server
"
target
=
"
MyModalDialog
"
>
<
div
>
&
nbsp;
<
asp:TextBox ID
=
"
TextBox1
"
runat
=
"
server
"
></
asp:TextBox
>
<
asp:Button ID
=
"
Button1
"
runat
=
"
server
"
OnClick
=
"
Button1_Click
"
Text
=
"
添加
"
/>
<
asp:Button ID
=
"
Button4
"
runat
=
"
server
"
OnClick
=
"
Button4_Click
"
Text
=
"
确认返回
"
/>
<
input id
=
"
Button5
"
type
=
"
button
"
value
=
"
关闭
"
onclick
=
"
if(confirm('确认放弃吗?')) window.close();
"
/><
br
/>
<
asp:ListBox ID
=
"
ListBox1
"
runat
=
"
server
"
Rows
=
"
10
"
Width
=
"
300px
"
></
asp:ListBox
>
<
asp:Button ID
=
"
Button2
"
runat
=
"
server
"
OnClick
=
"
Button2_Click
"
Text
=
"
删除选择
"
/>
<
asp:Button ID
=
"
Button3
"
runat
=
"
server
"
OnClick
=
"
Button3_Click
"
Text
=
"
全部删除
"
/></
div
>
</
form
>
</
body
>
</
html
>

dropdownlist2.aspx.cs

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;

public
partial
class
test_dropdownlist2 : System.Web.UI.Page

{
protected void Page_Load(object sender, EventArgs e)

{

}
protected void Button1_Click(object sender, EventArgs e)

{
//添加
string s;
s = TextBox1.Text;
ListBox1.Items.Add(new ListItem(s, s));
}
protected void Button2_Click(object sender, EventArgs e)

{
//删除选择
ListItem li = new ListItem();
li = ListBox1.SelectedItem;
if (li != null)

{
ListBox1.Items.Remove(li);
}
}
protected void Button3_Click(object sender, EventArgs e)

{
//删除全部
ListBox1.Items.Clear();
}
protected void Button4_Click(object sender, EventArgs e)

{
//确认返回
//window.returnValue = ""; window.close();
string text = "", value = "";
foreach (ListItem li in ListBox1.Items)

{
text += li.Text + "|";
value += li.Value + "|";
}
if (text.Length > 0)

{
text = text.Remove(text.Length - 1);
value = value.Remove(value.Length - 1);
text = text + "*" + value;
}
Response.Write("<script type='text/javascript'>window.returnValue = '" + text + "'; window.close();</script>");
}
}
