ASP.NET Mobile CompareValidator Control[转]

Definition and Usage
定义和用法

The CompareValidator control is used to compare the value of one input control to the value of another input control or to a fixed value.
CompareValidator控件的作用是：拿其中一个输入控件的值和另外一个输入控件的值或一个固定值相比较。

Note: The validation will not fail if the input control is empty. Use the RequiredFieldValidator control to make the field required.
注意：如果输入控件是空值，那么验证将不会失败。使用RequiredFieldValidator 控件可以使字段变为必要字段。
 

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Properties
属性

Property 属性	Value 值	Description 描述
Alignment	left center right	Optional. How to align the control 可选参数。指定控件的排列方式
BackColor	rgb(x,x,x) #xxxxxx colorname	Optional. A background color for the control 可选参数。指定控件的背景颜色
ControlToCompare	id_of_control	Optional. The name of the control to compare with 可选参数。指定参与比较的控件名称
ControlToValidate	id_of_target_control	Optional. The id of the control to validate 可选参数。指定参与验证的控件id
Display	None Static Dynamic	Optional. The display behavior for the validation control. Legal values are: 可选参数。指定确认控件的显示方式。合法值如下： None (the control is not displayed. Used to show the error message only in the ValidationSummary control) 无效果。（控件不显示。仅显示ValidationSummary 控件的错误信息）   Static (the control displays an error message if validation fails. Space is reserved on the page for the message if the input passes validation 静态效果（如果验证失败，则控件显示错误信息。如果输入控件有效，也会为信息保留页面空间）   Dynamic (the control displays an error message if validation fails. Space is not reserved on the page for the message if the input passes validation 动态效果（如果验证失败，则控件显示错误信息。即使输入控件有效，也不会为信息保留页面空间） Dynamic is default 默认为动态样式
ErrorMessage	errortext_for_summary	Optional. The text to display in the ValidationSummary control when validation fails 可选参数。当验证失败时，将在ValidationSummary 控件中显示文本信息
ForeColor	rgb(x,x,x) #xxxxxx colorname	Optional. A foreground color for the control 可选参数。指定控件的前景色
Font-Bold	false true	Optional. Specifies whether or not the text in the control should be bold 可选参数。指定控件中的文本字体是否以粗体显示
Font-Italic	false true	Optional. Specifies whether or not the text in the control should be italic 可选参数。指定控件中的文本字体是否以斜体显示
Font-Name	fontname	Optional. Specifies the font name of the text in the control 可选参数。指定空间中的文本字体名称
Font-Size	normal small large	Optional. Specifies the font size of the text in the control 可选参数。指定空间中的文本字体尺寸
id	unique_name	Optional. A unique id for the control 可选参数。为空间指定一个独立的id
Operator	DataTypeCheck Equal GreaterThan GreaterThanEqual LessThan LessThanEqual NotEqual	Optional. The type of comparison to perform 可选参数。指定参与比较的类型
runat	"server"	Required. Specifies that the control is a server control 必要参数。指定该控件为服务器控件
StyleReference	name_of_style_element	Optional. Specifies a reference to a style to be applied to the control 可选参数。指定一个应用于控件的样式参数
Text	errortext	Optional. The message to display when validation fails 可选参数。当验证失败时，指定显示的信息
Type	Currency Date Double Integer String	Optional. Specifies the data type of the values to compare 可选参数。指定参与比较的值的日期类型
ValueToCompare	value	Optional. A specified value to compare with 可选参数。指定参与比较的值
Wrapping	wrap nowrap	Optional. Specifies whether or not the text in the control should wrap 可选参数。指定控件中的文本是否允许被嵌套

Example 1
案例1

The following example contains two forms in an .aspx file. The first form has a label with the text "Age?", an input box to input the age, and a submit button. The second page is activated by the submit button on the first page, and displays a response. If the input value validates as an error, an error message is displayed:
下面的案例包含了 .aspx 文件中的两张表单。第一张表单包含一个名为“Age?” 的标签，以及一个输入框和提交按钮。第二张页面将被第一张页面中的啼叫按钮激活。如果输入值确认出现错误，那么将显示一段错误信息：

<%@ Page 

            Inherits="System.Web.UI.MobileControls.MobilePage"%>

            

            <%@ Register TagPrefix="Mobile"

            Namespace="System.Web.UI.MobileControls"

            Assembly="System.Web.Mobile" %>

<script runat="server">

            Sub Page2(Sender as Object,E as EventArgs)

            If Page.IsValid Then

            ActiveForm=f2

            text2.Text="You are " & age.text & " years old"

            

            end if

            End Sub

            </script>

<Mobile:Form id="f1" runat="server">

            <Mobile:CompareValidator runat="server"

            ControlToValidate="age"

            

            Type="Integer"

            ValueToCompare="18"

            Operator="GreaterThanEqual">

            You must be at least 18

            </Mobile:CompareValidator>

            

            <Mobile:Label runat="server">Age?</Mobile:Label>

            <Mobile:TextBox id="age" runat="server" />

            <Mobile:Command OnClick="Page2" runat="server">

            

            Submit</Mobile:Command>

            </Mobile:Form>

<Mobile:Form id="f2" runat="server">

            <Mobile:Label id="text2" runat="server" />

            

            </Mobile:Form>