Validating recaptcha on server side

Question

I am using Google recaptcha in one of our projects. I added the recaptcha control in aspx page. Now i want to validate the value entered in recaptcha that is whether it is correct or not. How can i done it in a button click event? I am using c#.

Answer 1

Apparently it doesn't work with ASP.NET ValidationGroups. If you have a ValidationGroup, you need to call recaptcha.Validate() manually before checking recaptcha.IsValid or Page.IsValid.

Answer 2

if(Page.IsValid) //Will be true if captcha text is correct otherwise it will be false
{
 //***your code****

}

Edit: call Page.Validate() before checking condition

Answer 3

If you're using the ASP.NET reCaptcha control, you need to manually call

recaptcha.Validate()

before you check the recaptcha.IsValid or Page.IsValid properties.

Answer 4

C# must use recaptcha.Validate() depois you can use check if Page.IsValid