Fixing some compiler warnings

Examples/InlineAndReplyCombination/Baseclasses/MultipleChoiceForm.cs

@@ -14,9 +14,9 @@ namespace InlineAndReplyCombination.Baseclasses
     public class MultipleChoiceForm : AutoCleanForm
     {
         [SaveState]
-        public UserDetails UserDetails { get; set; }
+        public UserDetails? UserDetails { get; set; }
 
-        ButtonGrid ReplyButtonGrid;
+        ButtonGrid? ReplyButtonGrid;
 
         public String ReplyButtonTitle { get; set; } = "Restart";
 
@@ -28,7 +28,7 @@ namespace InlineAndReplyCombination.Baseclasses
             this.Init += MultipleChoiceForm_Init;
         }
 
-        private async Task MultipleChoiceForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
+        private Task MultipleChoiceForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
         {
             //Reply keyboard
             var bf = new ButtonForm();
@@ -43,6 +43,8 @@ namespace InlineAndReplyCombination.Baseclasses
             ReplyButtonGrid.ButtonClicked += ReplyButtonGrid_ButtonClicked;
 
             AddControl(ReplyButtonGrid);
+
+            return Task.CompletedTask;
         }
 
 

Examples/InlineAndReplyCombination/Forms/StartForm.cs

@@ -13,7 +13,7 @@ namespace InlineAndReplyCombination.Forms
 {
     public class StartForm : AutoCleanForm
     {
-        ButtonGrid buttonGrid;
+        ButtonGrid? buttonGrid;
 
         public StartForm()
         {
@@ -21,7 +21,7 @@ namespace InlineAndReplyCombination.Forms
 
         }
 
-        private async Task StartForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
+        private Task StartForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
         {
             var bf = new ButtonForm();
 
@@ -35,6 +35,7 @@ namespace InlineAndReplyCombination.Forms
 
             AddControl(buttonGrid);
 
+            return Task.CompletedTask;
         }
 
         private async Task ButtonGrid_ButtonClicked(object sender, TelegramBotBase.Args.ButtonClickedEventArgs e)

Examples/InlineAndReplyCombination/Forms/Steps/MainForm.cs

@@ -15,9 +15,9 @@ namespace InlineAndReplyCombination.Forms.Steps
     public class MainForm : MultipleChoiceForm
     {
 
-        ButtonGrid InlineButtonGrid;
+        ButtonGrid? InlineButtonGrid;
 
-        public static List<Tuple<String, String>> AllowedInlineInputs = null;
+        public static List<Tuple<String, String>> AllowedInlineInputs;
 
         static MainForm()
         {
@@ -41,7 +41,7 @@ namespace InlineAndReplyCombination.Forms.Steps
             CurrentStep = 1;
         }
 
-        private async Task MainForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
+        private Task MainForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
         {
 
             //Inline Keyboard
@@ -61,6 +61,7 @@ namespace InlineAndReplyCombination.Forms.Steps
 
             AddControl(InlineButtonGrid);
 
+            return Task.CompletedTask;
         }
 
         private async Task InlineButtonGrid_ButtonClicked(object sender, TelegramBotBase.Args.ButtonClickedEventArgs e)
@@ -72,7 +73,12 @@ namespace InlineAndReplyCombination.Forms.Steps
                 return;
             }
 
-            this.UserDetails.AgeRange = e.Button?.Value ?? "unknown";
+            if (UserDetails == null)
+            {
+                return;
+            }
+
+            UserDetails.AgeRange = e.Button?.Value ?? "unknown";
 
             var sf = new SecondForm();
 

Examples/InlineAndReplyCombination/Forms/Steps/SecondForm.cs

@@ -15,9 +15,9 @@ namespace InlineAndReplyCombination.Forms.Steps
     public class SecondForm : MultipleChoiceForm
     {
 
-        ButtonGrid InlineButtonGrid;
+        ButtonGrid? InlineButtonGrid;
 
-        public static List<Tuple<String, String>> AllowedInlineInputs = null;
+        public static List<Tuple<String, String>> AllowedInlineInputs;
 
         static SecondForm()
         {
@@ -42,7 +42,7 @@ namespace InlineAndReplyCombination.Forms.Steps
 
         }
 
-        private async Task SecondForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
+        private Task SecondForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
         {
 
             //Inline Keyboard
@@ -60,6 +60,7 @@ namespace InlineAndReplyCombination.Forms.Steps
 
             AddControl(InlineButtonGrid);
 
+            return Task.CompletedTask;
         }
 
         private async Task InlineButtonGrid_ButtonClicked(object sender, TelegramBotBase.Args.ButtonClickedEventArgs e)
@@ -71,7 +72,12 @@ namespace InlineAndReplyCombination.Forms.Steps
                 return;
             }
 
-            this.UserDetails.FavouriteColor = e.Button?.Value ?? "unknown";
+            if (UserDetails == null)
+            {
+                return;
+            }
+
+            UserDetails.FavouriteColor = e.Button?.Value ?? "unknown";
 
             var tf = new ThirdForm();
 

Examples/InlineAndReplyCombination/Forms/Steps/Summary.cs

@@ -14,9 +14,9 @@ namespace InlineAndReplyCombination.Forms.Steps
     public class Summary : AutoCleanForm
     {
         [SaveState]
-        public UserDetails UserDetails { get; set; }
+        public UserDetails? UserDetails { get; set; }
 
-        ButtonGrid ReplyButtonGrid { get; set; }
+        ButtonGrid? ReplyButtonGrid { get; set; }
 
         public Summary()
         {
@@ -24,7 +24,7 @@ namespace InlineAndReplyCombination.Forms.Steps
         
         }
 
-        private async Task Summary_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
+        private Task Summary_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
         {
             var bf = new ButtonForm();
 
@@ -39,6 +39,7 @@ namespace InlineAndReplyCombination.Forms.Steps
 
             AddControl(ReplyButtonGrid);
 
+            return Task.CompletedTask;
         }
 
         public override async Task Load(MessageResult message)

Examples/InlineAndReplyCombination/Forms/Steps/ThirdForm.cs

@@ -15,9 +15,9 @@ namespace InlineAndReplyCombination.Forms.Steps
     public class ThirdForm : MultipleChoiceForm
     {
 
-        ButtonGrid InlineButtonGrid;
+        ButtonGrid? InlineButtonGrid;
 
-        public static List<Tuple<String, String>> AllowedInlineInputs = null;
+        public static List<Tuple<String, String>> AllowedInlineInputs;
 
         static ThirdForm()
         {
@@ -41,7 +41,7 @@ namespace InlineAndReplyCombination.Forms.Steps
 
         }
 
-        private async Task SecondForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
+        private Task SecondForm_Init(object sender, TelegramBotBase.Args.InitEventArgs e)
         {
 
             //Inline Keyboard
@@ -59,6 +59,7 @@ namespace InlineAndReplyCombination.Forms.Steps
 
             AddControl(InlineButtonGrid);
 
+            return Task.CompletedTask;
         }
 
         private async Task InlineButtonGrid_ButtonClicked(object sender, TelegramBotBase.Args.ButtonClickedEventArgs e)
@@ -70,7 +71,12 @@ namespace InlineAndReplyCombination.Forms.Steps
                 return;
             }
 
-            this.UserDetails.FavouriteCity = e.Button?.Value ?? "unknown";
+            if (UserDetails == null)
+            {
+                return;
+            }
+
+            UserDetails.FavouriteCity = e.Button?.Value ?? "unknown";
 
             var sum = new Summary();
             sum.UserDetails = this.UserDetails;

Examples/InlineAndReplyCombination/Model/UserDetails.cs

@@ -10,11 +10,11 @@ namespace InlineAndReplyCombination.Model
     [DebuggerDisplay("{AgeRange}, {FavouriteColor},  {FavouriteCity}")]
     public class UserDetails
     {
-        public String AgeRange { get; set; }
+        public String? AgeRange { get; set; }
 
-        public String FavouriteColor { get; set; }
+        public String? FavouriteColor { get; set; }
 
-        public String FavouriteCity { get; set; }
+        public String? FavouriteCity { get; set; }
 
     }
 }

Examples/InlineAndReplyCombination/Program.cs

@@ -6,7 +6,7 @@ namespace InlineAndReplyCombination
 {
     internal class Program
     {
-        public static BotBase BotBaseInstance { get; private set; }
+        public static BotBase? BotBaseInstance { get; private set; }
 
         static async Task Main(string[] args)
         {