ASP.NET CustomValidator Control
 Complete Validation Control Reference
Definition and Usage
The CustomValidator control allows you to write a method to handle the
validation of the value entered.
Properties
| Property |
Description |
| BackColor |
The background color of the CustomValidator control |
| ClientValidationFunction |
Specifies the name of the client-side validation script
function to be executed. Note: The script must be in a language that
the browser supports, such as VBScript or JScript With VBScript, the
function must be in the form:
Sub FunctionName (source, arguments)
With JScript, the function must be in the form:
Function FunctionName (source, arguments)
|
| ControlToValidate |
The id of the control to validate |
| Display |
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
|
| EnableClientScript |
A Boolean value that specifies whether client-side
validation is enabled or not |
| Enabled |
A Boolean value that specifies whether the validation
control is enabled or not |
| ErrorMessage |
The text to display in the ValidationSummary control when
validation fails. Note: This text will also be displayed in the
validation control if the Text property is not set |
| ForeColor |
The foreground color of the control |
| id |
A unique id for the control |
| IsValid |
A Boolean value that indicates whether the control
specified by ControlToValidate is determined to be valid |
| OnServerValidate |
Specifies the name of the server-side validation script
function to be executed |
| runat |
Specifies that the control is a server control. Must
be set to "server" |
| Text |
The message to display when validation fails |
Examples
CustomValidator
In this example we declare two Label controls, one TextBox control, one
Button
control, and one CustomValidator control in an .aspx file. The
user() function
checks the length of the input value. If the length is <8 or >16 the text "A
username must be between 8 and 16 characters!" will appear in the CustomValidator
control.
Complete Validation Control Reference
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