ChallengeImageCustomRenderEventArgs.Code Property

Gets the code generated within the challenge image of the ASPxCaptcha control.

Namespace: DevExpress.Web.Captcha

Assembly: DevExpress.Web.v23.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public string Code { get; }

VB.NET

Public ReadOnly Property Code As String

Property Value

Type	Description
String	A string value that represents the code.

Example

The example below demonstrates how to handle the ChallengeImageCustomRender event to implement a custom challenge image.

Default.aspx

<dx:ASPxCaptcha ID="ASPxCaptcha1" runat="server" 
                OnChallengeImageCustomRender="OnChallengeImageCustomRender" />

Default.aspx.cs

protected void OnChallengeImageCustomRender(object sender, ChallengeImageCustomRenderEventArgs e) {
    using (Graphics graphics = Graphics.FromImage(e.Image)) {
        System.Drawing.Image backgroundImage = System.Drawing.Image.FromFile(Server.MapPath("~/pp.jpg"));
        graphics.DrawImage(backgroundImage, 0, 0, e.Image.Width, e.Image.Height);
        Font font = new Font("Times New Roman", 40.0f, FontStyle.Bold, GraphicsUnit.Pixel);
        graphics.DrawString(e.Code, font, Brushes.Red, new PointF(0.0f, 0.0f));
        graphics.Flush();
    }
}

Default.aspx.vb

Protected Sub OnChallengeImageCustomRender(ByVal sender As Object, ByVal e As ChallengeImageCustomRenderEventArgs)
    Using graphics As Graphics = Graphics.FromImage(e.Image)
        Dim backgroundImage As System.Drawing.Image = System.Drawing.Image.FromFile(Server.MapPath("~/pp.jpg"))
        graphics.DrawImage(backgroundImage, 0, 0, e.Image.Width, e.Image.Height)
        Dim font As New Font("Times New Roman", 40.0f, FontStyle.Bold, GraphicsUnit.Pixel)
        graphics.DrawString(e.Code, font, Brushes.Red, New PointF(0.0f, 0.0f))
        graphics.Flush()
    End Using
End Sub