Exception coming When Converting Base64String to Byte array - Invalid length for a Base-64 char array or string

Question

I have very large Base64 encode string for file size of about 50mb.I want to save this file on server, I am using below code to file on server, But I get exception :

Exception:

"Invalid length for a Base-64 char array or string."

Code:

byte[] filebytes = Convert.FromBase64String(fileData);
File.WriteAllBytes(filePath, filebytes);

I think due to large size of Base64 string max length of byte array is exceeding, Please help me how I can fix this issue,

Answer 1

尝试这个：

byte[] filebytes = Convert.FromBase64String(fileData.Replace(" ","+"));

Answer 2

Try replacing empty strings with '+' in fileData. This exception usually comes due to empty strings.