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ASP.NET Mobile CompareValidator Control

ASP.NET Mobile Reference 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>

ASP.NET Mobile Reference Complete ASP.NET Mobile Reference
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