ASPxCaptcha.Code Property

Gets the textual representation of the code automatically generated by the control and displayed within the challenge image.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v20.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public virtual string Code { get; protected set; }

VB.NET

Public Overridable Property Code As String

Property Value

Type	Description
String	A String value representing the automatically generated code.

Remarks

We recommend you to check the Code property value in the Page.Init event handler because the control generates the code before the Page_Load event. You get a different captcha code in all event handlers that occur later than the Page.Init event. Refer to the BC4085 - ASPxCaptcha - The Captcha code’s generation logic has been changed Breaking Change description for more information.

ASPX

<dx:ASPxCaptcha ID="Captcha" runat="server" >
    <ValidationSettings EnableValidation="False"></ValidationSettings>
    <ClientSideEvents BeginCallback="onCaptchaBeginCallback" EndCallback="onCaptchaEndCallback" />
</dx:ASPxCaptcha>
...
<label for="TbCode">Type the code</label>
<input type="text" id="TbCode" name="tbCode" autocomplete="off" />
<span id="ValidateCodeMessage" runat="server" enableviewstate="false"></span>

C#

protected void Page_Init(object sender, EventArgs e) {
    if(IsPostBack) {
        bool isCaptchaValid = Captcha.Code == Request["TbCode"];
        ValidateCodeMessage.InnerText = String.Format("The submitted code is {0}", isCaptchaValid ? "correct" : "incorrect");
        ValidateCodeMessage.Style.Add(HtmlTextWriterStyle.Color, isCaptchaValid ? "green" : "red");
    }
}

Online Demo

ASPxCaptcha - Custom Appearance