我有一个网页，上面有3个搜索字段，每个字段都有不同的提交按钮。当使用键盘上的enter按钮提交任何一个时，正在执行不正确的操作，尽管使用鼠标就可以了。
为什么会发生这种情况？
以下要求呈现的HTML：
<!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="ctl00_ctl00_Head1">
<body id="home">
<form name="aspnetForm" method="post" action="history_lookup.aspx?theme=t2" id="aspnetForm">
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE1MzkzOTQxNDBkGAEFHl9fQ29udHJvbHNSZXF1aXJlUG9zdEJhY2tLZXlfXxYFBSZjdGwwMCRjdGwwMCRNaW5pQ2FydFRleHQxJEltYWdlQnV0dG9uMQUsY3RsMDAkY3RsMDAkVG9wTmF2JFF1aWNrU2VhcmNoMSRJbWFnZUJ1dHRvbjIFLGN0bDAwJGN0bDAwJFRvcE5hdiRRdWlja1NlYXJjaDEkSW1hZ2VCdXR0b24xBShjdGwwMCRjdGwwMCRjcGhSb290JGNwaFN1Yk1hc3RlciRzdWJtaXQxBShjdGwwMCRjdGwwMCRjcGhSb290JGNwaFN1Yk1hc3RlciRzdWJtaXQy4UTdoX+Ej1GFsXGOrI898SMftDA=" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['aspnetForm'];
if (!theForm) {
theForm = document.aspnetForm;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<script src="/WebResource.axd?d=gfGwAOwAxcQ9Nlq6l3EJfg2&t=634166396192656250" type="text/javascript"></script>
<div>
<input type="hidden" name="__PREVIOUSPAGE" id="__PREVIOUSPAGE" value="fwZ-2v_x8CYGGr9a8Ce0s6gkE38QmubHNljKJaKxZV41" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWCAKs3Nu8DwLV2a2zBwKK/6PwCQLBpvyBBAKT+aizBgL+qMTTDwLU1/SWCwL+qNiuCArtGFkuC9Zj3X3If1cwPC7PKtcm" />
</div>
<div class="container clearfix" style="left: 0px; top: 0px">
<div class="utilityNav">
<a class="MenuItem" href="/extranet.aspx?theme=t2" title="Account Info">
Account Info
</a>
|
<a class="MenuItem" href="/history_lookup.aspx?theme=t2" title="Order History">
Order History
</a>
|
<a class="MenuItem" href="/_user_logout.aspx" title="Sign Off">
Sign Off
</a>
</div>
<div class="header">
<div class="cart" >
<div id="menu">
<div class="cartimage">
<input type="image" name="ctl00$ctl00$MiniCartText1$ImageButton1" id="ctl00_ctl00_MiniCartText1_ImageButton1" src="images/bg-cart-corner.gif" align="left" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("ctl00$ctl00$MiniCartText1$ImageButton1", "", false, "", "cart.aspx", false, false))" style="border-width:0px;" />
</div>
<div class="cartlabel">Checkout Cart:<br />
<a id="ctl00_ctl00_MiniCartText1_lbMiniCart2" class="cartlink" href="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("ctl00$ctl00$MiniCartText1$lbMiniCart2", "", false, "", "cart.aspx?theme=t2", false, true))">View your cart</a>
</div>
<br /><br />
</div>
</div>
</div>
<div class="primaryNav">
<div class="navdropdown">
</div>
<div align="right" class="quicksearch">
<div class="QuickSearch">
<div id="ctl00_ctl00_TopNav_QuickSearch1_quicksearchpanel" onkeypress="javascript:return WebForm_FireDefaultButton(event, 'ctl00_ctl00_TopNav_QuickSearch1_ImageButton1')">
<table cellpadding="0" cellspacing="0" class="QuickSearch">
<tr>
<td class="quicksearch_text">
<span id="ctl00_ctl00_TopNav_QuickSearch1_lblSearch"></span>
</td>
<td >
<input class="QuickSearch" type="text" name="searchstring" size="15" maxlength="30" value="Search" onfocus="if (this.value == 'Search') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Search';}" />
</td>
<td class="quicksearch_button">
<input type="image" name="ctl00$ctl00$TopNav$QuickSearch1$ImageButton2" id="ctl00_ctl00_TopNav_QuickSearch1_ImageButton2" src="images/searchbutton.gif" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("ctl00$ctl00$TopNav$QuickSearch1$ImageButton2", "", false, "", "/Searchdh.aspx?theme=t2", false, false))" style="border-width:0px;" />
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
<td valign="top">
<div class="HistoryLookupPage">
<h1 class="PageHeader">
<span id="ctl00_ctl00_cphRoot_cphSubMaster_PageHeader1_LabelHeader">Order History</span>
</h1>
<p>
Enter the reference number of the order you want to see.
</p>
<p>
Reference number
<input name="ctl00$ctl00$cphRoot$cphSubMaster$CustomerReference" type="text" id="ctl00_ctl00_cphRoot_cphSubMaster_CustomerReference" class="borderTextBox" />
<input type="image" name="ctl00$ctl00$cphRoot$cphSubMaster$submit1" id="ctl00_ctl00_cphRoot_cphSubMaster_submit1" src="images/buttons/findorder-blue.gif" style="border-width:0px;" />
</p>
<br />
<p><b>Or search by PO Number</b></p>
<p>
<input name="ctl00$ctl00$cphRoot$cphSubMaster$CustomerReference2" type="text" id="ctl00_ctl00_cphRoot_cphSubMaster_CustomerReference2" class="borderTextBox" />
<input type="image" name="ctl00$ctl00$cphRoot$cphSubMaster$submit2" id="ctl00_ctl00_cphRoot_cphSubMaster_submit2" src="images/buttons/findorder-blue.gif" style="border-width:0px;" />
</p>
</div>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
和aspx标记
<%@ Import Namespace="System.Configuration.ConfigurationManager" %>
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="history_lookup.aspx.vb"
EnableViewState="false" Inherits="history_lookup" ValidateRequest="false" CodeFileBaseClass="Main.Page"
MasterPageFile="~/masters/default/main.master" RuntimeMasterPageFile="ThreeColumn.master"
CrumbName="<%$ Resources: Language, LABEL_MENU_HISTORY %>" %>
<%@ Register Src="~/controls/Message.ascx" TagName="Message" TagPrefix="uc1" %>
<%@ Register Src="~/controls/PageHeader.ascx" TagName="PageHeader" TagPrefix="uc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="cphSubMaster" runat="Server">
<td valign="top">
<div class="HistoryLookupPage">
<uc1:Message ID="Message1" runat="server" />
<uc1:PageHeader ID="PageHeader1" runat="server" Text="<%$ Resources: Language, LABEL_MENU_HISTORY %>"
EnableTheming="true" />
<p>
<asp:Literal ID="Literal1" runat="server" Text="<%$ Resources: Language, LABEL_PLEASE_ENTER_ORDERREF %>"></asp:Literal>
</p>
<p>
<asp:Literal ID="Literal2" runat="server" Text="<%$ Resources: Language, LABEL_HISTORY_LOOKUP %>"></asp:Literal>
<asp:TextBox runat="server" ID="CustomerReference" CssClass="borderTextBox" />
<%-- <asp:Button ID="Button1" runat="server" CssClass="BtnC" Text="<%$ Resources: Language, ACTION_LOOKUP %>" />
--%> <asp:ImageButton ID="submit1" runat="server" imageurl="~/images/buttons/findorder-blue.gif" />
</p>
<% if Not globals.User("Anonymous") then %>
<br />
<p><b>Or search by PO Number</b></p>
<p>
<asp:TextBox runat="server" ID="CustomerReference2" CssClass="borderTextBox" />
<%-- <asp:Button ID="Button2" runat="server" CssClass="BtnC" Text="Find Order" />
--%> <asp:ImageButton ID="submit2" runat="server" imageurl="~/images/buttons/findorder-blue.gif" />
</p>
<% end if %>
</div>
</td>
</tr>
</table>
</asp:Content>
答案 0 :(得分：3)
在asp：面板中包含每组字段，然后将每个asp：面板的默认按钮设置为正确的按钮ID。问题是它默认为错误的提交按钮。