# Send an SMS Message with .NET Core

 Note:
Before you can get started, you need the following already set up:

- 
- [The latest version of .Net Core with **Long Term Support**](https://dotnet.microsoft.com/download) and a familiarity with how to create a new app.


Learn how to quickly send SMS messages in a .Net Core application with the Sinch API.

Steps:
1. [Set up](#set-up-your-net-core-application) your .NET Core application
2. [Send](#send-your-first-sms-message) your first SMS message


## Set up your .Net Core application

1. Create a new folder where you want your app project. Then, open a terminal or command prompt to that location.
2. Create a new .Net Core console app with the following command:

```shell
dotnet new console
```
3. Add the `Newtonsoft.Json` nuget package.

```shell
dotnet add package Newtonsoft.Json
```


### Modify your application

1. Open the `Program.cs` file in your project folder. Replace everything in the file with the following code:

```csharp
SMS sms = new SMS("YOUR_Sinch_virtual_number", new string[] {"recipient_number"}, "Hello from Sinch!" );
sms.sendSMS(sms, "YOUR_servicePlanId", "YOUR_API_token");
Console.ReadLine();
```
2. Next, create a new file in the project folder named `SMS.cs`. Populate that file with the "Send an SMS message" code found on this page.

3. Save the file.


### Fill in your parameters

1. Back in the `Program.cs` file, replace the following values for these parameters with your values:
| Parameter | Your value |
|  --- | --- |
| `YOUR_Sinch_virtual_number` | Any number you've assigned to your Sinch account. Find the number on your Sinch [dashboard](https://dashboard.sinch.com/sms/api/rest) by clicking the service plan ID link and scrolling to the bottom of the page. |
| `recipient_number` | The phone number to which you want to send the test SMS message. |
| `YOUR_servicePlanId` | The API token found on your Sinch [dashboard](https://dashboard.sinch.com/sms/api/rest). Click `Show` to reveal your API token. |
| `YOUR_API_token` | The service plan ID found on your Sinch [dashboard](https://dashboard.sinch.com/sms/api/rest). |
Double check that the region is correct on your base URL. Learn more about [regional options here](/docs/sms/api-reference#base-url).
2. Save the file.


### Build your project

Before executing your code, you must first compile your application. Execute the following command:


```shell
dotnet build
```

## Send your first SMS message

Now you can execute the code and send your test SMS message. Run the following command:


```shell
dotnet run
```

You should receive a text to the phone number you entered and you'll see a response in your terminal or command prompt. Press `Enter` to exit the application. You did it!

## Next steps

The code you used in the `SMS.cs` file sends a POST request to the Sinch API [`/batches` endpoint to send the SMS message](/docs/sms/api-reference/sms/batches).

- [Learn how to recieve SMS](/docs/sms/getting-started/csharp/receive-sms)


## Additional resources

- Explore the [API specification](/docs/sms/api-reference/) to test more endpoints.