Base 64 encoding in C#

Question

I have inherited some C# code. This code needs to upload a picture to a web service. This code saves the bytes of picture into byte[] called ImageBytes. To ensure the greatest portability, I want to first encode the ImageBytes into a base 64 encoded string. I believe the following code is doing that, however, I'm not sure. Can someone please verify if my assumption is correct?

StringBuilder sb = new StringBuilder(); this.ImageBytes.ToList<byte>().ForEach(x => sb.AppendFormat("{0}.", Convert.ToUInt32(x)));

Is this code converting my byte[] into a base 64 encoded string?

Thank you!

No, it will just give you all the bytes in decimal (base 10) with dots between them, like 162.239.5.104.86.. Just as if you had said String.Join(".", this.ImageBytes). — Jeppe Stig Nielsen
– Jeppe Stig Nielsen, Commented Aug 4, 2012 at 15:23

burning_LEGION · Accepted Answer · 2012-08-04 15:17:39Z

use methods System.Convert.ToBase64String() and System.Convert.FromBase64String() for example

public static string EncodeTo64(string toEncode) { byte[] toEncodeAsBytes = Encoding.ASCII.GetBytes(toEncode); return Convert.ToBase64String(toEncodeAsBytes); } public static string DecodeFrom64(string encodedData) { byte[] encodedDataAsBytes = Convert.FromBase64String(encodedData); return Encoding.ASCII.GetString(encodedDataAsBytes); }

Luis Aguilar · Accepted Answer · 2012-08-04 15:17:23Z

Use the Convert.ToBase64String() method. It takes a byte array as parameter and returns the converted string.

Sean U · Accepted Answer · 2012-08-04 15:18:47Z

No, that's just converting it to a list of integers.

Use Convert.ToBase64String(). Assuming ImageBytes is a byte[]:

var base64Output = Convert.ToBase64String(ImageBytes);

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