code guidelines

src/Yavsc.Abstract/Attributes/Validation/YaStringLength.cs

@@ -5,7 +5,7 @@ namespace Yavsc.Attributes.Validation
     public partial class YaStringLength: YaValidationAttribute
     {
         public long MinimumLength { get; set; } = 0;
-        private long maxLen;
+        private readonly long maxLen;
         public YaStringLength(long maxLen) : base( ()=> "BadStringLength")
         {
             this.maxLen = maxLen;
@@ -50,4 +50,4 @@ namespace Yavsc.Attributes.Validation
         }
 
     }
-}
+}

src/Yavsc.Abstract/Authentication/OAuthenticator.cs

@@ -24,8 +24,7 @@ namespace Yavsc.Authentication
         readonly Uri accessTokenUrl;
         readonly Uri redirectUrl;
         readonly GetUsernameAsyncFunc getUsernameAsync;
-
-        string requestState;
+        readonly string requestState;
         bool reportedForgery = false;
 
         /// <summary>

src/Yavsc.Abstract/FileSystem/IFileRecieved.Info.cs

@@ -2,7 +2,6 @@ namespace Yavsc.Abstract.FileSystem
 {
     public interface IFileRecievedInfo
     {
-        string MimeType { get; set; }
         
         string DestDir { get; set; }
 
@@ -12,4 +11,4 @@ namespace Yavsc.Abstract.FileSystem
 
         bool QuotaOffensed { get; set; }
     }
-}
+}

src/Yavsc.Abstract/FileSystem/UserDirectoryInfo.cs

@@ -16,7 +16,7 @@ namespace Yavsc.ViewModels.UserFiles
         public DirectoryShortInfo [] SubDirectories { 
             get; set;
         }
-        private DirectoryInfo dInfo;
+        private readonly DirectoryInfo dInfo;
 
         // for deserialization
         public UserDirectoryInfo()