Base64转图片关闭流

AOI/util/Base64Util.cs

@@ -20,12 +20,14 @@ namespace AOI
             {
                 return "";
             }
-            BinaryFormatter binFormatter = new BinaryFormatter();
-            MemoryStream memStream = new MemoryStream();
-            binFormatter.Serialize(memStream, img);
-            byte[] bytes = memStream.GetBuffer();
-            string base64 = Convert.ToBase64String(bytes);
-            return base64;
+            using (MemoryStream memStream = new MemoryStream())
+            {
+                BinaryFormatter binFormatter = new BinaryFormatter();
+                binFormatter.Serialize(memStream, img);
+                byte[] bytes = memStream.GetBuffer();
+                string base64 = Convert.ToBase64String(bytes);
+                return base64;
+            }
         }
 
         /// <summary>
@@ -38,10 +40,12 @@ namespace AOI
                 return null;
             }
             byte[] bytes = Convert.FromBase64String(base64);
-            MemoryStream memStream = new MemoryStream(bytes);
-            BinaryFormatter binFormatter = new BinaryFormatter();
-            Image img = (Image)binFormatter.Deserialize(memStream);
-            return img;
+            using (MemoryStream memStream = new MemoryStream(bytes))
+            {
+                BinaryFormatter binFormatter = new BinaryFormatter();
+                Image img = (Image)binFormatter.Deserialize(memStream);
+                return img;
+            }
         }
     }
 }