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Resources / Programming / Add Yart Captcha to a Web Form

Add Yart Captcha to a Web Form

Copy the aspx code from APP/YartCaptcha which consists of:
- HiddenField
- Image
- TextBox
- CustomValidator
- Button
to your own page in one of the asp TableCell where you want to put your captcha.
Add an attribute ValidationGroup in your button, say ValidationGroup="vbABCForm4"
3. Copy the code from the same file to the .cs file:
protected void vldCaptcha_ServerValidate(object source,ServerValidateEventArgs args)
{
   args.IsValid = m_captcha.Verify(hidCaptcha.Value, tbCaptcha.Text);
}

protected void btnSubmit_Click(object sender, EventArgs e)
{
   if(Page.IsValid)
     Response.Redirect(ABCFunctions.AspxFilenameWithoutExt + "/Thank-you.aspx");
   else
     GenerateCaptcha();
}

Server.MapPath(captchaTempDir));
   if (!IsPostBack)
   GenerateCaptcha();
}

private void GenerateCaptcha()
{
   hidCaptcha.Value = m_captcha.CreateImage();
   imgCaptcha.ImageUrl = m_captcha.LastImageUrl;
   tbCaptcha.Text = "";
}
YartCaptcha m_captcha;

protected void Page_Load(object sender, EventArgs e)
{
string captchaTempDir = AppPath + "admin/temp/";
m_captcha = new YartCaptcha(125, 50, captchaTempDir,
4. Move the contents in the Page_Load(object sender, EventArgs e) to your own Page_Load method.
Move the contents in btnSubmit_Click(object sender, EventArgs e) method to your own btn_Click method, and put your code in side your method inside if(Page.IsValid)

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