如何将base64字符串转换为二进制

Question

Clarification

This question is, not a duplicate of the linked suggest as this is a UWP based issue where System.Data.Linq namespace cannot be referenced. This was closed as a duplicate question previously however this is a different problem . This isn't standard .NET, it is the Universal Windows Platform

How does one convert a base64 string to System.Data.Linq.Binary type within UWP.

The issue is occuring when I am attempting to send data over to my WCF service which is using a linq to sql datacontext class. The field in the database is the image type and the class created by the linq to sql datacontext changes the type to System.Data.Linq.Binary rather than byte[] (which is what I was using when it was a manually created class.

So far my attempts have been fruitless. Normally I would send it over as byte[], however if i use Convert.FromBase64String(mystring) I get the error

unable to implicitly convert byte[] to System.Data.Linq.Binary

Clarification

This question is, not a duplicate of the linked suggest as this is a UWP based issue where System.Data.Linq namespace cannot be referenced.

Answer 1

Linq.Binary has a constructor that takes a byte[] which is available in UWP pre Windows 10.

So in this case:

var x = new System.Data.Linq.Binary(Convert.FromBase64String(mystring));

For windows 10 or above, you would need to change the object in the Web Service to take a byte array, by changing the Entity type.