Error Message in confirmedEmail

Question

In my registeration file,i have code like this

if (confirmedEmail != null)

{

result.Successful = false;

result.Errors.Add(new OperationStatus { Type = "Email", Message = string.Format("Email address {0} already exists.", email) });

return result;

}

if same email is came means i need to throw error but now it just refreshing the page password and captcha is getting refreshed .How to solve this

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