将输入控件的值同常数值或其他输入控件的值相比较，以确定这两个值是否与由比较运算符（小于、等于、大于等等）指定的关系相匹配。
|
|---|
<asp:CompareValidator
????AccessKey="string"
????AssociatedControlID="string"
????BackColor="color name|#dddddd"
????BorderColor="color name|#dddddd"
????BorderStyle="NotSet|None|Dotted|Dashed|Solid|Double|Groove|Ridge|
Inset|Outset"
????BorderWidth="size"
????ControlToCompare="string"
????ControlToValidate="string"
????CssClass="string"
????CultureInvariantValues="True|False"
????Display="None|Static|Dynamic"
????EnableClientScript="True|False"
????Enabled="True|False"
????EnableTheming="True|False"
????EnableViewState="True|False"
????ErrorMessage="string"
????Font-Bold="True|False"
????Font-Italic="True|False"
????Font-Names="string"
????Font-Overline="True|False"
????Font-Size="string|Smaller|Larger|XX-Small|X-Small|Small|Medium|
Large|X-Large|XX-Large"
????Font-Strikeout="True|False"
????Font-Underline="True|False"
????ForeColor="color name|#dddddd"
????Height="size"
????ID="string"
????OnDataBinding="DataBinding event handler"
????OnDisposed="Disposed event handler"
????OnInit="Init event handler"
????OnLoad="Load event handler"
????OnPreRender="PreRender event handler"
????OnUnload="Unload event handler"
????Operator="Equal|NotEqual|GreaterThan|GreaterThanEqual|LessThan|
LessThanEqual|DataTypeCheck"
????runat="server"
????SetFocusOnError="True|False"
????SkinID="string"
????Style="string"
????TabIndex="integer"
????Text="string"
????ToolTip="string"
????Type="String|Integer|Double|Date|Currency"
????ValidationGroup="string"
????ValueToCompare="string"
????Visible="True|False"
????Width="size"
/> |
备注
示例
下面的代码示例演示如何使用 CompareValidator 控件来验证一个文本框中输入的值是否与另一个文本框中输入的值匹配。验证结果随后显示在页上。
| Visual Basic? |  复制代码 |
|---|
<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
<head>
<script runat="server">
Sub Button_Click(sender As Object, e As EventArgs)
If Page.IsValid Then
lblOutput.Text = "Result: Valid!"
Else
lblOutput.Text = "Result: Not valid!"
End If
End Sub
Sub Operator_Index_Changed(sender As Object, e As EventArgs)
Compare1.Operator = CType(ListOperator.SelectedIndex, ValidationCompareOperator)
Compare1.Validate()
End Sub
Sub Type_Index_Changed(sender As Object, e As EventArgs)
Compare1.Type = CType(ListType.SelectedIndex, ValidationDataType)
Compare2.Type = CType(ListType.SelectedIndex, ValidationDataType)
Compare1.Validate()
End Sub
</script>
</head>
<body>
<form runat="server">
<h3>CompareValidator Example</h3>
<p>
Enter a value in each text box. Select a comparison operator<br>
and data type. Click "Validate" to compare values.
<table bgcolor="#eeeeee" cellpadding="10">
<tr valign="top">
<td>
<h5>String 1:</h5>
<asp:TextBox id="TextBox1"
runat="server"/>
<br>
<asp:CompareValidator id="Compare1"
ControlToValidate="TextBox1"
ControlToCompare="TextBox2"
Type="String"
EnableClientScript="false"
Text="Failed Validation"
runat="server"/>
</td>
<td>
<h5>Comparison Operator:</h5>
<asp:ListBox id="ListOperator"
OnSelectedIndexChanged="Operator_Index_Changed"
runat="server">
<asp:ListItem Selected Value="Equal" >Equal</asp:ListItem>
<asp:ListItem Value="NotEqual" >NotEqual</asp:ListItem>
<asp:ListItem Value="GreaterThan" >GreaterThan</asp:ListItem>
<asp:ListItem Value="GreaterThanEqual" >GreaterThanEqual</asp:ListItem>
<asp:ListItem Value="LessThan" >LessThan</asp:ListItem>
<asp:ListItem Value="LessThanEqual" >LessThanEqual</asp:ListItem>
<asp:ListItem Value="DataTypeCheck" >DataTypeCheck</asp:ListItem>
</asp:ListBox>
</td>
<td>
<h5>String 2:</h5>
<asp:TextBox id="TextBox2"
runat="server"/>
<br>
<asp:CompareValidator id="Compare2"
ControlToValidate="TextBox2"
Operator="DataTypeCheck"
EnableClientScript="false"
Text="Invalid Data Type"
runat="server"/>
<br>
<asp:Button id="Button1"
Text="Validate"
OnClick="Button_Click"
runat="server"/>
</td>
</tr>
<tr>
<td colspan="3" align="center">
<h5>Data Type:</h5>
<asp:ListBox id="ListType"
OnSelectedIndexChanged="Type_Index_Changed"
runat="server">
<asp:ListItem Selected Value="String" >String</asp:ListItem>
<asp:ListItem Value="Integer" >Integer</asp:ListItem>
<asp:ListItem Value="Double" >Double</asp:ListItem>
<asp:ListItem Value="Date" >Date</asp:ListItem>
</asp:ListBox>
</td>
</tr>
</table>
<br>
<asp:Label id="lblOutput"
Font-Name="verdana"
Font-Size="10pt"
runat="server"/>
</form>
</body>
</html>
|
| C#? | 复制代码 |
|---|
<%@ Page Language="C#" AutoEventWireup="True" %>
<html>
<head>
<script runat="server">
void Button_Click(Object sender, EventArgs e)
{
if (Page.IsValid)
{
lblOutput.Text = "Result: Valid!";
}
else
{
lblOutput.Text = "Result: Not valid!";
}
}
void Operator_Index_Changed(Object sender, EventArgs e)
{
Compare1.Operator = (ValidationCompareOperator)ListOperator.SelectedIndex;
Compare1.Validate();
}
void Type_Index_Changed(Object sender, EventArgs e)
{
Compare1.Type = (ValidationDataType)ListType.SelectedIndex;
Compare2.Type = (ValidationDataType)ListType.SelectedIndex;
Compare1.Validate();
}
</script>
</head>
<body>
<form runat="server">
<h3>CompareValidator Example</h3>
<p>
Enter a value in each text box. Select a comparison operator<br>
and data type. Click "Validate" to compare values.
<table bgcolor="#eeeeee" cellpadding="10">
<tr valign="top">
<td>
<h5>String 1:</h5>
<asp:TextBox id="TextBox1"
runat="server"/>
<br>
<asp:CompareValidator id="Compare1"
ControlToValidate="TextBox1"
ControlToCompare="TextBox2"
Type="String"
EnableClientScript="false"
Text="Failed Validation"
runat="server"/>
</td>
<td>
<h5>Comparison Operator:</h5>
<asp:ListBox id="ListOperator"
OnSelectedIndexChanged="Operator_Index_Changed"
runat="server">
<asp:ListItem Selected Value="Equal" >Equal</asp:ListItem>
<asp:ListItem Value="NotEqual" >NotEqual</asp:ListItem>
<asp:ListItem Value="GreaterThan" >GreaterThan</asp:ListItem>
<asp:ListItem Value="GreaterThanEqual" >GreaterThanEqual</asp:ListItem>
<asp:ListItem Value="LessThan" >LessThan</asp:ListItem>
<asp:ListItem Value="LessThanEqual" >LessThanEqual</asp:ListItem>
<asp:ListItem Value="DataTypeCheck" >DataTypeCheck</asp:ListItem>
</asp:ListBox>
</td>
<td>
<h5>String 2:</h5>
<asp:TextBox id="TextBox2"
runat="server"/>
<br>
<asp:CompareValidator id="Compare2"
ControlToValidate="TextBox2"
Operator="DataTypeCheck"
EnableClientScript="false"
Text="Invalid Data Type"
runat="server"/>
<br>
<asp:Button id="Button1"
Text="Validate"
OnClick="Button_Click"
runat="server"/>
</td>
</tr>
<tr>
<td colspan="3" align="center">
<h5>Data Type:</h5>
<asp:ListBox id="ListType"
OnSelectedIndexChanged="Type_Index_Changed"
runat="server">
<asp:ListItem Selected Value="String" >String</asp:ListItem>
<asp:ListItem Value="Integer" >Integer</asp:ListItem>
<asp:ListItem Value="Double" >Double</asp:ListItem>
<asp:ListItem Value="Date" >Date</asp:ListItem>
</asp:ListBox>
</td>
</tr>
</table>
<br>
<asp:Label id="lblOutput"
Font-Name="verdana"
Font-Size="10pt"
runat="server"/>
</form>
</body>
</html> |
请参见
注意