C# 二进制转base64
public static string ConvertUploadFileToBase64(HttpPostedFileBase file) { using (MemoryStream memoryStream = new MemoryStream()) { file.InputStream.CopyTo(memoryStream); byte[] binaryData = memoryStream.ToArray(); string base64String = Convert.ToBase64String(binaryData); return base64String; } }
var base64Str =Tool.ConvertUploadFileToBase64(Request.Files.Get(0));