validnow.aspx
来自「asp.net专家200问(含源代码解决法案」· ASPX 代码 · 共 77 行
ASPX
77 行
<%@ Page language="c#" Codebehind="ValidNow.aspx.cs" AutoEventWireup="false" Inherits="Samples.ValidNow" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>实现即时验证功能示例</title>
</HEAD>
<body MS_POSITIONING="FlowLayout" onload="window_onload()">
<script language="javascript">
// 通过这个变量判断股票名称是否改变
var tickerChanged = false;
//“股票名称”文本控件内容改变事件
function TickerChange()
{
if(event.propertyName=="value")
{
tickerChanged = true;
document.all.form.submitButton.disabled=true;
}
}
//“数量”文本控件获得焦点事件
function SharesFocus()
{
//如果股票名称改变，则提交页面进行验证，并返回股票价格
if(tickerChanged)
{
var theform = document.forms[0];
// 这是一个自定义标识，表示是否是用户单击提交按钮
theform.buttonClick.value = 'false';
theform.submit();
}
}
function window_onload()
{
if (document.all)
{
if(document.all.shares)
{
//通过股票价格标签，判断股票名称是否验证有效
if(document.all.price.innerText.substring(0,1)=="@")
{
document.all.shares.focus();
document.all.form.submitButton.disabled=false;
}
else
{
document.all.symbol.select();
document.all.symbol.focus();
document.all.form.submitButton.disabled=true;
}
}
}
}
</script>
<form id="form" method="post" action="ValidNow.aspx" runat="server">
<asp:ValidationSummary ID="validationSummary" runat="server" HeaderText="" />
<input type="hidden" name="buttonClick" value="true">
<p class="section">买股票</p>
<table cellpadding="0" cellspacing="0">
<tr><td width="100">股票名称：</td>
<td><input type="text" id="symbol" maxlength="6" onPropertyChange='TickerChange()' runat="SERVER" NAME="symbol"></td>
</tr>
<tr><td>数量：</td>
<td><input type="text" id="shares" maxlength="8" runat="SERVER" onFocus='SharesFocus()' NAME="shares">
<b><asp:Label id="price" runat="SERVER" /></b></td>
</tr>
<tr><td> </td>
<td><br><input type="submit" id="submitButton" value="购买" runat="SERVER" NAME="submitButton"></td>
</tr>
</table>
<asp:RequiredFieldValidator id="RequiredSharesValidator" ControlToValidate="shares" ErrorMessage="数量不能为空！" Display="None" InitialValue="" Width="100%" runat="server"></asp:RequiredFieldValidator>
<asp:RangeValidator id="RangeSharesValidator" Type="Integer" ErrorMessage="数据量必须为整数！" ControlToValidate="shares" MinimumValue="1" MaximumValue="99999999" Display="None" runat="server"></asp:RangeValidator>
<asp:RequiredFieldValidator id="RequiredTickerValidator" ControlToValidate="symbol" ErrorMessage="股票名称不能为空！" Display="None" InitialValue="" Width="100%" runat="server"></asp:RequiredFieldValidator>
<asp:CustomValidator id="CustomTickerValidator" runat="server" ControlToValidate="symbol" ErrorMessage="股票名称无效！" OnServerValidate="ServerValidateTicker" Display="None"></asp:CustomValidator>
</form>
</body>
</HTML>
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