📄 comparevalidator.aspx
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<%@ Page clienttarget=downlevel %>
<html>
<head>
<script language="C#" runat="server">
void Button1_OnSubmit(Object sender, EventArgs e) {
//判断用户的输入是否通过验证(IsValid是否是TRUE)
if (Page.IsValid) {
lblOutput.Text = "验证通过";
}
else {
lblOutput.Text = "验证错误!";
}
}
void SelectedIndexChanged(Object sender, EventArgs e) {
//转换比较验证符，从SelectedIndex转换成ValidationCompareOperator类型
comp1.Operator = (ValidationCompareOperator) lstOperator.SelectedIndex;
comp1.Validate();
}
</script>
</head>
<body>
<h3>使用CompareValidator控件</h3>
<p>
<form runat=server>
<table>
<tr valign="top">
<td>
字符串一<p>
<asp:TextBox Selected id="txtToValidate" runat="server"></asp:TextBox>
</td>
<td>
比较操作符<p>
<asp:ListBox id="lstOperator"
OnSelectedIndexChanged="SelectedIndexChanged" runat="server">
<asp:ListItem Selected Value="Equal" >等于</asp:ListItem>
<asp:ListItem Value="NotEqual" >不等于</asp:ListItem>
<asp:ListItem Value="GreaterThan" >大于</asp:ListItem>
<asp:ListItem Value="GreaterThanEqual" >大于等于</asp:ListItem>
<asp:ListItem Value="LessThan" >小于</asp:ListItem>
<asp:ListItem Value="LessThanEqual" >小于等于</asp:ListItem>
</asp:ListBox>
</td>
<td>
字符串二<p>
<asp:TextBox id="txtToCompare" runat="server"></asp:TextBox><p>
</td>
</tr>
</table>
<asp:Button runat=server Text="验证" ID="Button1" onclick="Button1_OnSubmit" />
<asp:CompareValidator id="comp1" ControlToValidate="txtToValidate"
ControlToCompare = "txtToCompare" Type="String" runat="server"/>
<p>
<asp:Label ID="lblOutput" runat="server"/>
</form>
</body>
</html>
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