All Telerik .NET tools and Kendo UI JavaScript components in one package. Now enhanced with:
<
telerik:RadCaptcha
ID
=
"RadCaptcha1"
runat
"server"
CaptchaImage-TextChars
"Numbers"
ValidationGroup
"CaptchaValidation"
CaptchaImage-RenderImageOnly
"true"
CaptchaImage-TextLength
"3"
ErrorMessage
"Wrong"
CaptchaTextBoxLabel
"Enter Sum of Digits"
OnCaptchaValidate
"RadCaptcha1_CaptchaValidate"
>
</
telerik:RadTextBox
"RadTextBox1"
asp:RequiredFieldValidator
"RequiredFieldValidator1"
ControlToValidate
"*"
ForeColor
"Red"
></
br
/>
telerik:RadButton
"RadButton1"
Text
"Click"
protected
void
Page_Init(
object
sender, EventArgs e)
{
if
(!IsPostBack)
Session[
"CaptchaCode"
] = RadCaptcha1.CaptchaImage.Text;
}
RadCaptcha1_CaptchaValidate(
sender, CaptchaValidateEventArgs e)
e.CancelDefaultValidation =
true
;
string
captcha = Session[
].ToString();
int
digitsSum = 0;
foreach
(
char
c
in
captcha)
digitsSum += Convert.ToInt32(c.ToString());
enteredsum = Convert.ToInt32(RadTextBox1.Text);
(digitsSum == enteredsum)
e.IsValid =
else
false