ASPxCaptcha.IsValid Property

Gets or sets a value that indicates whether the text entered into the text box coincides with the automatically generated code displayed within the challenge image.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.2.dll

Declaration

C#

[DefaultValue(false)]
public virtual bool IsValid { get; set; }

VB.NET

<DefaultValue(False)>
Public Overridable Property IsValid As Boolean

Property Value

Type	Default	Description
Boolean	false	true if the entered text successfully passed verification; otherwise, false.

Remarks

The IsValid property allows you to find out whether an end-user has correctly recognized the challenge image’s code, and whether the entered text confirms human interaction. The IsValid property’s value is automatically defined within the ASPxCaptcha control, depending upon the internally performed verification.

If a built-in validation mechanism is used for the text box‘ value (CaptchaValidationSettings.EnableValidation property is set to true, and some validation rules are defined via the ASPxCaptcha.ValidationSettings property), the IsValid property can be set manually, for instance, in a case when you don’t want to display the error text (defined via the CaptchaValidationSettings.ErrorText property) for an invalid editor.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the IsValid property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

asp-net-web-forms-editors-create-registration-form/CS/ASPxEditorsTutorial.Step4/RegistrationForm.aspx.cs#L19

protected void signUp_Click(object sender, EventArgs e) {
    if(Captcha.IsValid) {
        using(OleDbConnection connection = GetConnection()) {

VB.NET

asp-net-web-forms-editors-create-registration-form/VB/ASPxEditorsTutorial.Step4/RegistrationForm.aspx.vb#L23

Protected Sub signUp_Click(ByVal sender As Object, ByVal e As EventArgs)
    If Captcha.IsValid Then
        Using connection As OleDbConnection = GetConnection()