# Workflow Basics

This tutorial covers the fundamentals of authoring Dapr Workflows. For more information about the fundamentals of Dapr Workflows, see the [Dapr docs](https://docs.dapr.io/developing-applications/building-blocks/workflow/workflow-features-concepts/).

## Inspect the code

Open the `BasicWorkflow.cs` file in the `tutorials/workflow/csharp/fundamentals/Basic` folder. This file contains the definition for the workflow.

The workflow consists of two activities: `Activity1` and `Activity2`, which are called in sequence, where the result of Activity1 is used as an input for Activity2. You can find the Activity definitions in the `Activities` folder.

```mermaid
graph LR
   SW((Start
   Workflow))
   A1[Activity1]
   A2[Activity2]
   EW((End
   Workflow))
   SW --> A1
   A1 --> A2
   A2 --> EW
```

## Run the tutorial

1. Use a terminal to navigate to the `tutorials/workflow/csharp/fundamentals` folder.
2. Build the project using the .NET CLI.

    ```bash
    dotnet build ./Basic/
    ```

3. Use the Dapr CLI to run the Dapr Multi-App run file

    <!-- STEP
    name: Run multi app run template
    expected_stdout_lines:
    - 'Started Dapr with app id "basic"'
    expected_stderr_lines:
    working_dir: .
    output_match_mode: substring
    background: true
    sleep: 15
    timeout_seconds: 30
    -->
    ```bash
    dapr run -f .
    ```
    <!-- END_STEP -->

4. Use the POST request in the [`fundamentals.http`](./fundamentals.http) file to start the workflow, or use this cURL command:

    ```bash
    curl -i --request POST http://localhost:5254/start/One
    ```

    Note the `Location` header in the response. This header contains the workflow instance ID. You can use this ID to get the status of the workflow instance you just started.

    The input for the workflow is a string with the value `One`. The expected app logs are as follows:

    ```text
    == APP - basic == Activity1: Received input: One.
    == APP - basic == Activity2: Received input: One Two.
    ```

5. Use the GET request in the [`fundamentals.http`](./fundamentals.http) file to get the status of the workflow, or use this cURL command:

    ```bash
    curl --request GET --url http://localhost:3554/v1.0/workflows/dapr/<INSTANCEID>
    ```

    Where `<INSTANCEID>` is the workflow instance ID you received in the `Location` header in the previous step.

    The expected serialized output of the workflow is:

    ```txt
    "\"One Two Three\""
    ```

6. Stop the Dapr Multi-App run process by pressing `Ctrl+C`.