Use file based namespaces, make classes internal sealed

Signed-off-by: Marc Duiker <marcduiker@users.noreply.github.com>

tutorials/workflow/csharp/challenges-tips/DeterministicWorkflow.cs

@@ -1,48 +1,47 @@
 using System;
 using Dapr.Workflow;
 
-namespace WorkflowApp
+namespace WorkflowApp;
+
+internal sealed class NonDeterministicWorkflow : Workflow<string, string>
 {
-    public class NonDeterministicWorkflow : Workflow<string, string>
+    public override async Task<string> RunAsync(WorkflowContext context, string orderItem)
     {
-        public override async Task<string> RunAsync(WorkflowContext context, string orderItem)
-        {
-            // Do not use non-deterministic operations in a workflow!
-            // These operations will create a new value every time the
-            // workflow is replayed.
-            var orderId = Guid.NewGuid().ToString();
-            var orderDate = DateTime.UtcNow;
+        // Do not use non-deterministic operations in a workflow!
+        // These operations will create a new value every time the
+        // workflow is replayed.
+        var orderId = Guid.NewGuid().ToString();
+        var orderDate = DateTime.UtcNow;
 
-            var idResult = await context.CallActivityAsync<string>(
-                "SubmitId",
-                orderId);
+        var idResult = await context.CallActivityAsync<string>(
+            "SubmitId",
+            orderId);
 
-            await context.CallActivityAsync<string>(
-                "SubmitDate",
-                orderDate);
+        await context.CallActivityAsync<string>(
+            "SubmitDate",
+            orderDate);
 
-            return idResult;
-        }
+        return idResult;
     }
+}
 
-    public class DeterministicWorkflow : Workflow<string, string>
+internal sealed class DeterministicWorkflow : Workflow<string, string>
+{
+    public override async Task<string> RunAsync(WorkflowContext context, string orderItem)
     {
-        public override async Task<string> RunAsync(WorkflowContext context, string orderItem)
-        {
-            // Do use these deterministic methods and properties on the WorkflowContext instead.
-            // These operations create the same value when the workflow is replayed.
-            var orderId = context.NewGuid().ToString();
-            var orderDate = context.CurrentUtcDateTime;
-            
-            var idResult = await context.CallActivityAsync<string>(
-                "SubmitId",
-                orderId);
+        // Do use these deterministic methods and properties on the WorkflowContext instead.
+        // These operations create the same value when the workflow is replayed.
+        var orderId = context.NewGuid().ToString();
+        var orderDate = context.CurrentUtcDateTime;
 
-            await context.CallActivityAsync<string>(
-                "SubmitDate",
-                orderDate);
+        var idResult = await context.CallActivityAsync<string>(
+            "SubmitId",
+            orderId);
 
-            return idResult;
-        }
+        await context.CallActivityAsync<string>(
+            "SubmitDate",
+            orderDate);
+
+        return idResult;
     }
-}
+}

tutorials/workflow/csharp/challenges-tips/IdempotentActivity.cs

@@ -1,19 +1,18 @@
 using Dapr.Client;
 using Dapr.Workflow;
 
-namespace WorkflowApp
-{
-    public class IdempotentActivity : WorkflowActivity<string, string>
-    {
-        public override async Task<InventoryResult> RunAsync(WorkflowActivityContext context, OrderItem orderItem)
-        {
-            // Beware of non-idempotent operations in an activity.
-            // Dapr Workflow guarantees at-least-once execution of activities, so activities might be executed more than once.
-            // For instance, can you insert a record to a database twice without side effects?
-            //      var insertSql = $"INSERT INTO Orders (Id, Description, UnitPrice, Quantity) VALUES ('{orderItem.Id}', '{orderItem.Description}', {orderItem.UnitPrice}, {orderItem.Quantity})";
-            // It's best to perform a check if an record already exists before inserting it.
-        }
-    }
+namespace WorkflowApp;
 
-    record OrderItem(string Id, string Description, double UnitPrice, int Quantity);
-}
+internal sealed class IdempotentActivity : WorkflowActivity<string, string>
+{
+    public override async Task<InventoryResult> RunAsync(WorkflowActivityContext context, OrderItem orderItem)
+    {
+        // Beware of non-idempotent operations in an activity.
+        // Dapr Workflow guarantees at-least-once execution of activities, so activities might be executed more than once.
+        // For instance, can you insert a record to a database twice without side effects?
+        //      var insertSql = $"INSERT INTO Orders (Id, Description, UnitPrice, Quantity) VALUES ('{orderItem.Id}', '{orderItem.Description}', {orderItem.UnitPrice}, {orderItem.Quantity})";
+        // It's best to perform a check if an record already exists before inserting it.
+    }
+}
+
+internal sealed record OrderItem(string Id, string Description, double UnitPrice, int Quantity);

tutorials/workflow/csharp/challenges-tips/PayloadSizeWorkflow.cs

@@ -1,44 +1,43 @@
 using Dapr.Workflow;
 
-namespace WorkflowApp
+namespace WorkflowApp;
+
+internal sealed class LargePayloadSizeWorkflow : Workflow<string, LargeDocument>
 {
-    public class LargePayloadSizeWorkflow : Workflow<string, LargeDocument>
+    public override async Task<LargeDocument> RunAsync(WorkflowContext context, string id)
     {
-        public override async Task<LargeDocument> RunAsync(WorkflowContext context, string id)
-        {
-            // Do not pass large payloads between activities.
-            // They are stored in the Dapr state store twice, one as output argument 
-            // for GetDocument, and once as input argument for UpdateDocument.
-            var document = await context.CallActivityAsync<LargeDocument>(
-                "GetDocument",
-                id);
+        // Do not pass large payloads between activities.
+        // They are stored in the Dapr state store twice, one as output argument 
+        // for GetDocument, and once as input argument for UpdateDocument.
+        var document = await context.CallActivityAsync<LargeDocument>(
+            "GetDocument",
+            id);
 
-            var updatedDocument = await context.CallActivityAsync<LargeDocument>(
-                "UpdateDocument",
-                document);
+        var updatedDocument = await context.CallActivityAsync<LargeDocument>(
+            "UpdateDocument",
+            document);
 
-            // More activities to process the updated document...
+        // More activities to process the updated document...
 
-            return updatedDocument;
-        }
+        return updatedDocument;
     }
+}
 
 
-    public class SmallPayloadSizeWorkflow : Workflow<string, string>
+public class SmallPayloadSizeWorkflow : Workflow<string, string>
+{
+    public override async Task<string> RunAsync(WorkflowContext context, string id)
     {
-        public override async Task<string> RunAsync(WorkflowContext context, string id)
-        {
-            // Do pass small payloads between activities, preferably IDs only, or objects that are quick to (de)serialize in large volumes.
-            // Combine multiple actions, such as document retrieval and update, into a single activity.
-            var documentId = await context.CallActivityAsync<string>(
-                "GetAndUpdateDocument",
-                id);
+        // Do pass small payloads between activities, preferably IDs only, or objects that are quick to (de)serialize in large volumes.
+        // Combine multiple actions, such as document retrieval and update, into a single activity.
+        var documentId = await context.CallActivityAsync<string>(
+            "GetAndUpdateDocument",
+            id);
 
-            // More activities to process the updated document...
+        // More activities to process the updated document...
 
-            return documentId;
-        }
+        return documentId;
     }
+}
 
-    public record LargeDocument(string Id, object Data);
-}
+internal sealed record LargeDocument(string Id, object Data);

tutorials/workflow/csharp/challenges-tips/VersioningWorkflow.cs

@@ -1,49 +1,48 @@
 using Dapr.Workflow;
 
-namespace WorkflowApp
+namespace WorkflowApp;
+
+/// <summary>
+/// This is the initial version of the workflow.
+/// Note that the input argument for both activities is the orderItem (string).
+/// </summary>
+internal sealed class VersioningWorkflow1 : Workflow<string, int>
 {
-    /// <summary>
-    /// This is the initial version of the workflow.
-    /// Note that the input argument for both activities is the orderItem (string).
-    /// </summary>
-    public class VersioningWorkflow1 : Workflow<string, int>
+    public override async Task<int> RunAsync(WorkflowContext context, string orderItem)
     {
-        public override async Task<int> RunAsync(WorkflowContext context, string orderItem)
-        {
-            int resultA = await context.CallActivityAsync<int>(
-                "ActivityA",
-                orderItem);
+        int resultA = await context.CallActivityAsync<int>(
+            "ActivityA",
+            orderItem);
 
-            int resultB = await context.CallActivityAsync<int>(
-                "ActivityB",
-                orderItem);
+        int resultB = await context.CallActivityAsync<int>(
+            "ActivityB",
+            orderItem);
 
-            return resultA + resultB;
-        }
+        return resultA + resultB;
     }
+}
 
-    /// <summary>
-    /// This is the updated version of the workflow.
-    /// The input for ActivityB has changed from orderItem (string) to resultA (int).
-    /// If there are in-flight workflow instances that were started with the previous version
-    /// of this workflow, these will fail when the new version of the workflow is deployed 
-    /// and the workflow name remains the same, since the runtime parameters do not match with the persisted state.
-    /// It is recommended to version workflows by creating a new workflow class with a new name:
-    /// {workflowname}1 -> {workflowname}2
-    /// </summary>
-    public class VersioningWorkflow2 : Workflow<string, int>
+/// <summary>
+/// This is the updated version of the workflow.
+/// The input for ActivityB has changed from orderItem (string) to resultA (int).
+/// If there are in-flight workflow instances that were started with the previous version
+/// of this workflow, these will fail when the new version of the workflow is deployed 
+/// and the workflow name remains the same, since the runtime parameters do not match with the persisted state.
+/// It is recommended to version workflows by creating a new workflow class with a new name:
+/// {workflowname}1 -> {workflowname}2
+/// </summary>
+internal sealed class VersioningWorkflow2 : Workflow<string, int>
+{
+    public override async Task<int> RunAsync(WorkflowContext context, string orderItem)
     {
-        public override async Task<int> RunAsync(WorkflowContext context, string orderItem)
-        {
-            int resultA = await context.CallActivityAsync<int>(
-                "ActivityA",
-                orderItem);
+        int resultA = await context.CallActivityAsync<int>(
+            "ActivityA",
+            orderItem);
 
-            int resultB = await context.CallActivityAsync<int>(
-                "ActivityB",
-                resultA);
+        int resultB = await context.CallActivityAsync<int>(
+            "ActivityB",
+            resultA);
 
-            return resultA + resultB;
-        }
+        return resultA + resultB;
     }
 }

tutorials/workflow/csharp/child-workflows/ChildWorkflows/Activities/Activity1.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace ChildWorkflows.Activities;
 
-public class Activity1 : WorkflowActivity<string, string>
+internal sealed class Activity1 : WorkflowActivity<string, string>
 {
     public override Task<string> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/child-workflows/ChildWorkflows/Activities/Activity2.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace ChildWorkflows.Activities;
 
-public class Activity2 : WorkflowActivity<string, string>
+internal sealed class Activity2 : WorkflowActivity<string, string>
 {
     public override Task<string> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/child-workflows/ChildWorkflows/ChildWorkflow.cs

@@ -2,23 +2,21 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
-using Dapr.Workflow;
 using ChildWorkflows.Activities;
+using Dapr.Workflow;
 
-namespace ChildWorkflows
+namespace ChildWorkflows;
+internal sealed class ChildWorkflow : Workflow<string, string>
 {
-    public class ChildWorkflow : Workflow<string, string>
+    public override async Task<string> RunAsync(WorkflowContext context, string input)
     {
-        public override async Task<string> RunAsync(WorkflowContext context, string input)
-        {
-            var result1 = await context.CallActivityAsync<string>(
-                nameof(Activity1),
-                input);
-            var childWorkflowResult = await context.CallActivityAsync<string>(
-                nameof(Activity2),
-                result1);
+        var result1 = await context.CallActivityAsync<string>(
+            nameof(Activity1),
+            input);
+        var childWorkflowResult = await context.CallActivityAsync<string>(
+            nameof(Activity2),
+            result1);
 
-            return childWorkflowResult;
-        }
+        return childWorkflowResult;
     }
 }

tutorials/workflow/csharp/child-workflows/ChildWorkflows/ParentWorkflow.cs

@@ -7,7 +7,7 @@ using ChildWorkflows.Activities;
 
 namespace ChildWorkflows;
 
-public class ParentWorkflow : Workflow<string[], string[]>
+internal sealed class ParentWorkflow : Workflow<string[], string[]>
 {
     public override async Task<string[]> RunAsync(WorkflowContext context, string[] input)
     {

tutorials/workflow/csharp/combined-patterns/ShippingApp/Program.cs

@@ -36,8 +36,8 @@ app.MapPost("/registerShipment", async (
 
 app.Run();
 
-public record Order(string Id, OrderItem OrderItem, CustomerInfo CustomerInfo);
-public record OrderItem(string ProductId, string ProductName, int Quantity, decimal TotalPrice);
-public record CustomerInfo(string Id, string Country);
-public record ShipmentRegistrationStatus(string OrderId, bool IsSuccess, string Message = "");
-public record ShippingDestinationResult(bool IsSuccess, string Message = "");
+internal sealed record Order(string Id, OrderItem OrderItem, CustomerInfo CustomerInfo);
+internal sealed record OrderItem(string ProductId, string ProductName, int Quantity, decimal TotalPrice);
+internal sealed record CustomerInfo(string Id, string Country);
+internal sealed record ShipmentRegistrationStatus(string OrderId, bool IsSuccess, string Message = "");
+internal sealed record ShippingDestinationResult(bool IsSuccess, string Message = "");

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Activities/CheckInventory.cs

@@ -3,7 +3,7 @@ using Dapr.Workflow;
 
 namespace WorkflowApp.Activities;
 
-public class CheckInventory : WorkflowActivity<OrderItem, ActivityResult>
+internal sealed class CheckInventory : WorkflowActivity<OrderItem, ActivityResult>
 {
     DaprClient _daprClient;
 
@@ -30,4 +30,4 @@ public class CheckInventory : WorkflowActivity<OrderItem, ActivityResult>
     }
 }
 
-public record ActivityResult(bool IsSuccess, string Message = "");
+internal sealed record ActivityResult(bool IsSuccess, string Message = "");

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Activities/CheckShippingDestination.cs

@@ -3,7 +3,7 @@ using Dapr.Workflow;
 
 namespace WorkflowApp.Activities;
 
-public class CheckShippingDestination : WorkflowActivity<Order, ActivityResult>
+internal sealed class CheckShippingDestination : WorkflowActivity<Order, ActivityResult>
 {
     private readonly HttpClient _httpClient;
 
@@ -28,4 +28,4 @@ public class CheckShippingDestination : WorkflowActivity<Order, ActivityResult>
     }
 }
 
-public record ShippingDestinationResult(bool IsSuccess);
+internal sealed record ShippingDestinationResult(bool IsSuccess);

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Activities/ProcessPayment.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace WorkflowApp.Activities;
 
-public class ProcessPayment : WorkflowActivity<Order, PaymentResult>
+internal sealed class ProcessPayment : WorkflowActivity<Order, PaymentResult>
 {
     public override Task<PaymentResult> RunAsync(WorkflowActivityContext context, Order order)
     {
@@ -11,4 +11,4 @@ public class ProcessPayment : WorkflowActivity<Order, PaymentResult>
     }
 }
 
-public record PaymentResult(bool IsSuccess);
+internal sealed record PaymentResult(bool IsSuccess);

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Activities/RegisterShipment.cs

@@ -3,7 +3,7 @@ using Dapr.Workflow;
 
 namespace WorkflowApp.Activities;
 
-public class RegisterShipment : WorkflowActivity<Order, RegisterShipmentResult>
+internal sealed class RegisterShipment : WorkflowActivity<Order, RegisterShipmentResult>
 {
     private readonly DaprClient _daprClient;
 
@@ -25,4 +25,4 @@ public class RegisterShipment : WorkflowActivity<Order, RegisterShipmentResult>
     }
 }
 
-public record RegisterShipmentResult(bool IsSucces);
+internal sealed record RegisterShipmentResult(bool IsSucces);

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Activities/ReimburseCustomer.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace WorkflowApp.Activities;
 
-public class ReimburseCustomer : WorkflowActivity<Order, ReimburseCustomerResult>
+internal sealed class ReimburseCustomer : WorkflowActivity<Order, ReimburseCustomerResult>
 {
     public override Task<ReimburseCustomerResult> RunAsync(WorkflowActivityContext context, Order order)
     {
@@ -11,4 +11,4 @@ public class ReimburseCustomer : WorkflowActivity<Order, ReimburseCustomerResult
     }
 }
 
-public record ReimburseCustomerResult(bool IsSuccess);
+internal sealed record ReimburseCustomerResult(bool IsSuccess);

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Activities/UpdateInventory.cs

@@ -3,7 +3,7 @@ using Dapr.Workflow;
 
 namespace WorkflowApp.Activities;
 
-public class UpdateInventory : WorkflowActivity<OrderItem, UpdateInventoryResult>
+internal sealed class UpdateInventory : WorkflowActivity<OrderItem, UpdateInventoryResult>
 {
     DaprClient _daprClient;
 
@@ -43,4 +43,4 @@ public class UpdateInventory : WorkflowActivity<OrderItem, UpdateInventoryResult
     }
 }
 
-public record UpdateInventoryResult(bool IsSuccess, string Message = "");
+internal sealed record UpdateInventoryResult(bool IsSuccess, string Message = "");

tutorials/workflow/csharp/combined-patterns/WorkflowApp/OrderWorkflow.cs

@@ -3,7 +3,7 @@ using WorkflowApp.Activities;
 
 namespace WorkflowApp;
 
-public class OrderWorkflow : Workflow<Order, OrderStatus>
+internal sealed class OrderWorkflow : Workflow<Order, OrderStatus>
 {
    public override async Task<OrderStatus> RunAsync(WorkflowContext context, Order order)
    {
@@ -62,4 +62,4 @@ public class OrderWorkflow : Workflow<Order, OrderStatus>
    }
 }
 
-public record OrderStatus(bool IsSuccess, string Message);
+internal sealed record OrderStatus(bool IsSuccess, string Message);

tutorials/workflow/csharp/combined-patterns/WorkflowApp/Program.cs

@@ -80,8 +80,8 @@ app.MapGet("/inventory/{productId}", async (
 
 app.Run();
 
-public record ProductInventory(string ProductId, int Quantity);
-public record Order(string Id, OrderItem OrderItem, CustomerInfo CustomerInfo);
-public record OrderItem(string ProductId, string ProductName, int Quantity, decimal TotalPrice);
-public record CustomerInfo(string Id, string Country);
-public record ShipmentRegistrationStatus(string OrderId, bool IsSuccess, string Message = "");
+internal sealed record ProductInventory(string ProductId, int Quantity);
+internal sealed record Order(string Id, OrderItem OrderItem, CustomerInfo CustomerInfo);
+internal sealed record OrderItem(string ProductId, string ProductName, int Quantity, decimal TotalPrice);
+internal sealed record CustomerInfo(string Id, string Country);
+internal sealed record ShipmentRegistrationStatus(string OrderId, bool IsSuccess, string Message = "");

tutorials/workflow/csharp/external-system-interaction/ExternalEvents/Activities/ProcessOrder.cs

@@ -3,7 +3,7 @@ using ExternalEvents;
 
 namespace ExternalEvents.Activities;
 
-public class ProcessOrder : WorkflowActivity<Order, bool>
+internal sealed class ProcessOrder : WorkflowActivity<Order, bool>
 {
     public override Task<bool> RunAsync(WorkflowActivityContext context, Order order)
     {

tutorials/workflow/csharp/external-system-interaction/ExternalEvents/Activities/RequestApproval.cs

@@ -3,7 +3,7 @@ using ExternalEvents;
 
 namespace ExternalEvents.Activities;
 
-public class RequestApproval : WorkflowActivity<Order, bool>
+internal sealed class RequestApproval : WorkflowActivity<Order, bool>
 {
     public override Task<bool> RunAsync(WorkflowActivityContext context, Order order)
     {

tutorials/workflow/csharp/external-system-interaction/ExternalEvents/Activities/SendNotification.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace ExternalEvents.Activities;
 
-public class SendNotification : WorkflowActivity<string, bool>
+internal sealed class SendNotification : WorkflowActivity<string, bool>
 {
     public override Task<bool> RunAsync(WorkflowActivityContext context, string message)
     {

tutorials/workflow/csharp/external-system-interaction/ExternalEvents/ExternalEventsWorkflow.cs

@@ -3,7 +3,7 @@ using ExternalEvents.Activities;
 
 namespace ExternalEvents;
 
-public class ExternalEventsWorkflow : Workflow<Order, string>
+internal sealed class ExternalEventsWorkflow : Workflow<Order, string>
 {
     public override async Task<string> RunAsync(WorkflowContext context, Order order)
     {
@@ -47,4 +47,4 @@ public class ExternalEventsWorkflow : Workflow<Order, string>
     }
 }
 
-public record ApprovalStatus(string OrderId, bool IsApproved);
+internal sealed record ApprovalStatus(string OrderId, bool IsApproved);

tutorials/workflow/csharp/external-system-interaction/ExternalEvents/Program.cs

@@ -26,4 +26,4 @@ app.MapPost("/start", async (Order order) => {
 
 app.Run();
 
-public record Order(string Id, string Description, int Quantity, double TotalPrice);
+internal sealed record Order(string Id, string Description, int Quantity, double TotalPrice);

tutorials/workflow/csharp/fan-out-fan-in/FanOutFanIn/Activities/GetWordLength.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace FanOutFanIn.Activities;
 
-public class GetWordLength : WorkflowActivity<string, WordLength>
+internal sealed class GetWordLength : WorkflowActivity<string, WordLength>
 {
     public override Task<WordLength> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/fan-out-fan-in/FanOutFanIn/FanOutFanInWorkflow.cs

@@ -7,7 +7,7 @@ using FanOutFanIn.Activities;
 
 namespace FanOutFanIn;
 
-public class FanOutFanInWorkflow : Workflow<string[], string>
+internal sealed class FanOutFanInWorkflow : Workflow<string[], string>
 {
     public override async Task<string> RunAsync(WorkflowContext context, string[] input)
     {

tutorials/workflow/csharp/fundamentals/Basic/Activities/Activity1.cs

@@ -8,7 +8,7 @@ namespace Basic.Activities;
 /// Activity code typically performs a one specific task, like calling an API to store retrieve data.
 /// You can use other Dapr APIs inside an activity.
 /// </summary>
-public class Activity1 : WorkflowActivity<string, string>
+internal sealed class Activity1 : WorkflowActivity<string, string>
 {
     /// <summary>
     /// The RunAsync method is an abstract method in the abstract WorkflowActivity class that needs to be implemented.

tutorials/workflow/csharp/fundamentals/Basic/Activities/Activity2.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace Basic.Activities;
 
-public class Activity2 : WorkflowActivity<string, string>
+internal sealed class Activity2 : WorkflowActivity<string, string>
 {
     public override Task<string> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/fundamentals/Basic/BasicWorkflow.cs

@@ -13,7 +13,7 @@ namespace Basic;
 /// Workflows orchestrate activities and other (child)workflows, and include business logic (if/else or switch statements).
 /// Workflow code must be be deterministic. Any non-deterministic behavior should be written inside activities.
 /// </summary>
-public class BasicWorkflow : Workflow<string, string>
+internal sealed class BasicWorkflow : Workflow<string, string>
 {
     /// <summary>
     /// The RunAsync method is an abstract method in the abstract Workflow class that needs to be implemented.

tutorials/workflow/csharp/monitor-pattern/Monitor/Activities/CheckStatus.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace Monitor.Activities;
 
-public class CheckStatus : WorkflowActivity<int, Status>
+internal sealed class CheckStatus : WorkflowActivity<int, Status>
 {
     public override Task<Status> RunAsync(WorkflowActivityContext context, int input)
     {
@@ -13,4 +13,4 @@ public class CheckStatus : WorkflowActivity<int, Status>
     }
 }
 
-public record Status(bool IsReady);
+internal sealed record Status(bool IsReady);

tutorials/workflow/csharp/monitor-pattern/Monitor/MonitorWorkflow.cs

@@ -3,7 +3,7 @@ using Monitor.Activities;
 
 namespace Monitor;
 
-public class MonitorWorkflow : Workflow<int, string>
+internal sealed class MonitorWorkflow : Workflow<int, string>
 {
     public override async Task<string> RunAsync(WorkflowContext context, int counter)
     {

tutorials/workflow/csharp/task-chaining/TaskChaining/Activities/Activity1.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace TaskChaining.Activities;
 
-public class Activity1 : WorkflowActivity<string, string>
+internal sealed class Activity1 : WorkflowActivity<string, string>
 {
     public override Task<string> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/task-chaining/TaskChaining/Activities/Activity2.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace TaskChaining.Activities;
 
-public class Activity2 : WorkflowActivity<string, string>
+internal sealed class Activity2 : WorkflowActivity<string, string>
 {
     public override Task<string> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/task-chaining/TaskChaining/Activities/Activity3.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace TaskChaining.Activities;
 
-public class Activity3 : WorkflowActivity<string, string>
+internal sealed class Activity3 : WorkflowActivity<string, string>
 {
     public override Task<string> RunAsync(WorkflowActivityContext context, string input)
     {

tutorials/workflow/csharp/task-chaining/TaskChaining/ChainingWorkflow.cs

@@ -7,7 +7,7 @@ using TaskChaining.Activities;
 
 namespace TaskChaining;
 
-public class ChainingWorkflow : Workflow<string, string>
+internal sealed class ChainingWorkflow : Workflow<string, string>
 {
     public override async Task<string> RunAsync(WorkflowContext context, string input)
     {

tutorials/workflow/csharp/workflow-management/WorkflowManagement/Activities/SendNotification.cs

@@ -2,7 +2,7 @@ using Dapr.Workflow;
 
 namespace WorkflowManagement.Activities;
 
-public class SendNotification : WorkflowActivity<int, bool>
+internal sealed class SendNotification : WorkflowActivity<int, bool>
 {
     public override Task<bool> RunAsync(WorkflowActivityContext context, int counter)
     {
@@ -12,4 +12,4 @@ public class SendNotification : WorkflowActivity<int, bool>
     }
 }
 
-public record Notification(string UserId, string Message);
+internal sealed record Notification(string UserId, string Message);

tutorials/workflow/csharp/workflow-management/WorkflowManagement/NeverEndingWorkflow.cs

@@ -3,7 +3,7 @@ using WorkflowManagement.Activities;
 
 namespace WorkflowManagement;
 
-public class NeverEndingWorkflow : Workflow<int, bool>
+internal sealed class NeverEndingWorkflow : Workflow<int, bool>
 {
     public override async Task<bool> RunAsync(WorkflowContext context, int counter)
     {