ASP.NET Mobile CompareValidator Control
 Complete ASP.NET Mobile Reference
Definition and Usage
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.
Note: The validation will not fail if the input control is empty. Use
the RequiredFieldValidator control to make the field required.
Properties
| Property |
Value |
Description |
| Alignment |
left
center
right |
Optional. How to align the control |
| BackColor |
rgb(x,x,x)
#xxxxxx
colorname |
Optional. A background color for the control |
| ControlToCompare |
id_of_control |
Optional. The name of the control to compare with |
| ControlToValidate |
id_of_target_control |
Optional. The id of the control to validate |
| Display |
None
Static
Dynamic |
Optional. The display behavior for the validation control.
Legal values are:
- None (the control is not displayed. Used to show the error message
only in the ValidationSummary control)
- Static (the control displays an error message if validation fails.
Space is reserved on the page for the message even if the input passes
validation
- 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
Dynamic is default |
| ErrorMessage |
errortext_for_summary |
Optional. The text to display in the ValidationSummary
control when validation fails |
| ForeColor |
rgb(x,x,x)
#xxxxxx
colorname |
Optional. A foreground color for the control |
| Font-Bold |
false
true |
Optional. Specifies whether or not the text in the control should be bold |
| Font-Italic |
false
true |
Optional. Specifies whether or not the text in the control should be italic |
| Font-Name |
fontname |
Optional. Specifies the font name of the text in the
control |
| Font-Size |
normal
small
large |
Optional. Specifies the font size of the text in the
control |
| id |
unique_name |
Optional. A unique id for the control |
| Operator |
DataTypeCheck
Equal
GreaterThan
GreaterThanEqual
LessThan
LessThanEqual
NotEqual |
Optional. The type of comparison to perform |
| runat |
"server" |
Required. Specifies that the control is a server control |
| StyleReference |
name_of_style_element |
Optional. Specifies a reference to a style to be applied to
the control |
| Text |
errortext |
Optional. The message to display when validation fails |
| Type |
Currency
Date
Double
Integer
String |
Optional. Specifies the data type of the values to compare |
| ValueToCompare |
value |
Optional. A specified value to compare with |
| Wrapping |
wrap
nowrap |
Optional. Specifies whether or not the text in the control should wrap |
Example 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:
<%@ 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>
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Complete ASP.NET Mobile Reference
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