update 20241201

Client - Kopie/Helper/FileHelper.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OnDoc.Helper
+{
+    public class FileHelper
+    {
+        public bool SaveBase64ToFile(string Base64String, string filename)
+        {
+            try
+            {
+                System.IO.File.WriteAllBytes(filename, Convert.FromBase64String(Base64String));
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+
+        }
+
+        public Stream GenerateStreamFromString(string s)
+        {
+            var stream = new MemoryStream();
+            var writer = new StreamWriter(stream);
+            writer.Write(s);
+            writer.Flush();
+            stream.Position = 0;
+            return stream;
+        }
+
+        public String Base64FromFile(string filename)
+        {
+            Byte[] bytes = File.ReadAllBytes(filename);
+            return Convert.ToBase64String(bytes);
+        }
+    }
+}