Class Captcha
A Captcha control that uses simple math expressions for validation before accepting input.
This control is fully self contained and carries the expected 'result' with it in ControlState data, so unlike image captcha there's no separate handler involved.
System.Web.UI.Control
System.Web.UI.WebControls.WebControl
Westwind.Web.Controls.Captcha
public class Captcha : WebControl
Class Members
| Member | Description | |
|---|---|---|
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Constructor |
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GenerateExpression |
Method can be used to generate a new Expression object with new values to use. Use this method to update the wwCaptcha expression after you've saved an entry. public void GenerateExpression() |
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DisplayMessage |
The message that is displayed above the expression that is to be entered. |
|
ErrorMessage |
The error message that is displayed when the not validated |
|
Timeout |
The timeout for this message in minutes. |
|
UniquePageId |
An optional page identifier that has to be matched by the validation and is written into ViewState. Ensures that spammers can't just capture the full post buffer and repost to another page. |
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Validated |
Set during validation |
Requirements
Namespace: Westwind.Web.ControlsAssembly: westwind.web.webforms.dll
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