Send your first message
With Sendbird Chat SDK for .NET, you can efficiently integrate real-time chat into a client app. On the client-side implementation, you can initialize and configure the chat with minimal effort. On the server-side, Sendbird ensures reliable infra-management services for the chat service within your app.
This page demonstrates how to install the Chat SDK in your app so that you can send your first message in just a few simple steps.
The minimum requirements for Chat SDK for .NET are:
Mono/ .NET 2.0
Note: Sendbird server supports Transport Layer Security (TLS) from version 1.0 up to 1.3. For example, in the server regions where TLS 1.3 isn’t available, lower versions, sequentially from 1.2 to 1.0, will be supported for secure data transmission.
Before you start
Before installing Sendbird Chat SDK, you need to create a Sendbird application on the Sendbird Dashboard, which comprises everything required in a chat service including users, messages, and channels. You will need the
App ID of your Sendbird application when initializing the Chat SDK.
Note: Each Sendbird application can be integrated with a single client app. Within the same application, users can communicate with each other across all platforms, whether they are on mobile devices or on the web.
Access control list
Sendbird provides various access control options when using the Chat SDK. By default, the following attributes are turned on to avoid unexpected errors when creating sample apps and sending your first message:
- Allow retrieving user list
- Allow updating user metadata
- Allow creating open channels
- Allow creating group channels
However, this may grant access to unwanted data or operations, leading to potential security concerns. To manage your access control settings, you can turn on or off each option in Settings > Application > Security > Access control list on Sendbird Dashboard.
To send a message in a client app, you should build and configure an in-app chat using Sendbird Chat SDK.
Step 1 Create a project
Create a new Visual Studio project.
Step 2 Install the Chat SDK
Installing the Chat SDK is simple if you’re familiar with using external libraries or SDK’s in your projects.
SendBird.dllin the GitHub repository for .NET. You must also download
websocket-sharp.dll, a WebSocket library, in the same repository. The Chat SDK uses
websocket-sharpto connect to Sendbird server.
Open your project in Visual Studio, then import both
websocket-sharp.dllfiles into your Reference.
Once the libraries have been imported, add the following code at the top of your source code file to start using Sendbird Chat SDK.
Step 3 Initialize the Chat SDK
Now, initialize Sendbird Chat SDK in the app to allow the Chat SDK to respond to changes in the connection status of .NET client apps. Initialization requires the
App ID, which can be found on Sendbird Dashboard. Pass in the
App ID of the Sendbird application you created earlier on the dashboard to
SendBirdClient.Init() for the initialization.
SendBirdClient.Init()method of a
SendBirdClientinstance must be called once across your .NET client app.
Step 4 Connect to Sendbird server
You will need a user in order to connect to Sendbird server and send a message to a channel. You can either create a user in the Sendbird Dashboard or use a unique ID that hasn't been taken by any of your Sendbird application users. In the latter case, a new user will be automatically created in your Sendbird application before being connected.
Note: To learn more about authenticating with an access token, go to Authentication.
Step 5 Create a new open channel
Create an open channel using the following codes. Open channels are where all users in your Sendbird application can easily participate without an invitation.
Note: You can also create a group channel to send a message. To learn more, see Create a channel in the Group channel page.
Step 6 Enter the channel
Enter the open channel to send and receive messages.
Step 7 Send a message to the channel
Finally, send a message to the channel. To learn about the message types you can send, refer to Message overview in Chat Platform API.