/ SDKs / .NET

SDKs

Overview
- Getting started
- Send first message
- User
- Overview
- - Retrieving and updating user information
  - Retrieve the online status of a user
  - Update user profile
  - Retrieve the latest information on participants
- - Managing user metadata
  - Manage user metadata
- Channel
- Overview
- - Creating a channel
  - Create a channel
- - Using group channel collection
  - Group channel collection
- - Managing operators
  - Register and remove operators
- - Joining and leaving a channel
  - Enter and exit an open channel
  - Join and leave a group channel
- - Retrieving channels
  - Retrieve a list of channels
  - Retrieve a channel by URL
- - Inviting users to a group channel
  - Invite users as members
  - Accept or decline an invitation
- - Categorizing channels
  - Categorize channels by custom type
- - Managing channels
  - Delete a channel
  - Hide or archive a group channel
  - Refresh all data related to a group channel
- - Moderating a channel
  - Freeze and unfreeze a channel
- - Managing channel metadata
  - Manage channel metadata
- - Managing channel metacounters
  - Manage channel metacounters
- Message
- Overview
- - Using message collection
  - Message collection
- - Receiving messages through event handler
  - Receive messages in a channel
- - Using message threading
  - Create a message thread
  - List replies in a message thread
- - Retrieving a message
  - Retrieve a message
- - Managing pinned messages in group channels
  - Pin a message
  - Unpin a message
- - Loading messages
  - Load previous messages
  - Load messages by timestamp or message ID
- - Listing changelogs
  - List changelogs of messages
- - Marking messages as read in a group channel
  - Mark messages as read
- - Marking messages as delivered in a group channel
  - Mark messages as delivered
- - Mentioning other users in a message
  - Mention other users in a message
- - Retrieving unread count in a group channel
  - Unread messages in a channel
  - Unread messages in all channels
  - Unread channels
  - Members who haven't read a message
  - Unread items
- - Categorizing messages
  - Categorize messages by custom type
- - Adding extra data to a message
  - Add extra data to a message
- - Translating messages
  - Auto-translate messages
  - Translate messages on-demand
  - Translation engine
- Application
- Overview
- - Authenticating a user
  - Authentication
- - Understanding rate limits
  - Rate limits
- Event handler
- Overview
- - Managing channel event handlers
  - Add or remove a channel event handler
- - Managing connection event handlers
  - Add or remove a connection event handler
- - Managing user event handlers
  - Add or remove a user event handler
- Push notifications
- Overview
- - Managing push notifications
  - Configure push notification preferences
  - Push notification content templates
  - Push notification tester
  - Push notification translation
- Report
- Overview
- - Creating a report
  - Report a message, user, or channel
Deprecated
Error codes
Logger

Chat SDKs .NET v4

Chat SDKs .NET

Chat SDKs

.NET

Version 4

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Retrieve number of unread items

You can retrieve the count of a user's unread messages, unread mentioned messages, or invitations received in group channels and Supergroup channels. You can use this action to display the number of unread items in the UI so that users may check them. This is only available in group channels and Supergroup channels.

To get the count, use the GetUnreadItemCount() method with SbUnreadItemKey.

C#

try {
  final unreadItemCount = await SendbirdChat.getUnreadItemCount([
    UnreadItemKey.nonSuperGroupChannelUnreadMessageCount,
  ]);
  // unreadItemCount.nonSuperGroupChannelUnreadMessageCount
} catch (e) {
  // Handle error.
}

The following table lists some of the properties in SbUnreadItemKey. To see the comprehensive list of all properties in SbUnreadItemKey, see the API reference.

Property name	Description
GroupChannelInvitationCount	The number of invitations from group channels and Supergroup channels the user has received.
GroupChannelUnreadMentionCount	The number of messages in group channels and Supergroup channels where the user was mentioned but the user hasn't read.
GroupChannelUnreadMessageCount	The number of messages in group channels and Supergroup channels the user hasn't read.
NonSuperGroupChannelInvitationCount	The number of invitations from group channels the user has received.
NonSuperGroupChannelUnreadMentionCount	The number of messages in group channels where the user was mentioned but the user hasn't read.
NonSuperGroupChannelUnreadMessageCount	The number of messages in group channels the user hasn't read.
SuperGroupChannelInvitationCount	The number of invitations from Supergroup channels the user has received.
SuperGroupChannelUnreadMentionCount	The number of messages in Supergroup channels where the user was mentioned but the user hasn't read.
SuperGroupChannelUnreadMessageCount	The number of messages in Supergroup channels the user hasn't read.