Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Is there any tryparse for Convert.FromBase64String
or we just count the character if it is equal 64 character or not.
I copy a encryption and decryption class, but there is an error on the following line. I want to check whether or not the cipherText can be converted without error
byte[] bytes = Convert.FromBase64String(cipherText);
Well, you could check the string first. It must have the right number of characters, verify with (str.Length * 6) % 8 == 0. And you can check every character, it must be in the set A-Z, a-z, 0-9, +, / and =. The = character can only appear at the end.
This is expensive, it is actually cheaper to just catch the exception. The reason .NET doesn’t have a TryXxx() version.