Fixing possible Deadlock in AutoCleanForm

Fix documentation inaccuracy

Thanks !

README.md

@@ -170,10 +170,8 @@ public class StartForm : FormBase
         }
 		
 	    //Gets invoked during Navigation to this form
-        public override async Task Init(params object[] param)
-        {
 
-        }
+        //Init() got replaced with event handler
 		
     	//Opened() got replaced with event handler
 

TelegramBotBase/Form/AutoCleanForm.cs

@@ -49,8 +49,15 @@ namespace TelegramBotBase.Form
             this.Device.MessageSent += Device_MessageSent;
 
             this.Device.MessageReceived += Device_MessageReceived;
+
+            this.Device.MessageDeleted += Device_MessageDeleted;
         }
 
+        private void Device_MessageDeleted(object sender, MessageDeletedEventArgs e)
+        {
+            if (OldMessages.Contains(e.MessageId))
+                OldMessages.Remove(e.MessageId);
+        }
 
         private void Device_MessageReceived(object sender, MessageReceivedEventArgs e)
         {
@@ -142,9 +149,16 @@ namespace TelegramBotBase.Form
                 try
                 {
                     parallelQuery.ForAll(i =>
+                    {
+                        try
                         {
                             Device.DeleteMessage(i).GetAwaiter().GetResult();
                             deletedMessages.Add(i);
+                        }
+                        catch (ApiRequestException req) when (req.ErrorCode == 400)
+                        {
+                            deletedMessages.Add(i);
+                        }
                     });
                 }
                 catch (AggregateException ex)
@@ -157,7 +171,7 @@ namespace TelegramBotBase.Form
                     retryAfterTask = Task.Delay(retryAfterSeconds * 1000);
                 }
 
-                deletedMessages.AsParallel().ForAll(i => Device.OnMessageDeleted(new MessageDeletedEventArgs(i)));
+                //deletedMessages.AsParallel().ForAll(i => Device.OnMessageDeleted(new MessageDeletedEventArgs(i)));
 
                 oldMessages = oldMessages.Where(x => !deletedMessages.Contains(x));
                 if (retryAfterTask != null)
@@ -175,9 +189,16 @@ namespace TelegramBotBase.Form
                     try
                     {
                         parallelQuery.ForAll(i =>
+                        {
+                            try
                             {
                                 Device.DeleteMessage(i).GetAwaiter().GetResult();
                                 deletedMessages.Add(i);
+                            }
+                            catch (ApiRequestException req) when (req.ErrorCode == 400)
+                            {
+                                deletedMessages.Add(i);
+                            }
                         });
                     }
                     catch (AggregateException ex)
@@ -190,7 +211,7 @@ namespace TelegramBotBase.Form
                         retryAfterTask = Task.Delay(retryAfterSeconds * 1000);
                     }
 
-                    deletedMessages.AsParallel().ForAll(i => Device.OnMessageDeleted(new MessageDeletedEventArgs(i)));
+                    //deletedMessages.AsParallel().ForAll(i => Device.OnMessageDeleted(new MessageDeletedEventArgs(i)));
 
                     oldMessages = oldMessages.Where(x => !deletedMessages.Contains(x));
                     if (retryAfterTask != null)

TelegramBotBase/Sessions/DeviceSession.cs

@@ -644,19 +644,13 @@ namespace TelegramBotBase.Sessions
         /// <returns></returns>
         public virtual async Task<bool> DeleteMessage(int messageId = -1)
         {
-            try
-            {
+
             await RAW(a => a.DeleteMessageAsync(this.DeviceId, messageId));
 
+            OnMessageDeleted(new MessageDeletedEventArgs(messageId));
+
             return true;
         }
-            catch (ApiRequestException)
-            {
-
-            }
-
-            return false;
-        }
 
         /// <summary>
         /// Deletes the given message