# \#chat-sdk **URL:** https://community.sendbird.com/tag/chat-sdk/43.md [Latest](https://community.sendbird.com/latest.md) · [Categories](https://community.sendbird.com/categories.md) · [Tags](https://community.sendbird.com/tags.md) --- ## [OnSessionTokenRequired callback not triggered in .NET SDK v4.1.1 (similar issue found in JS SDK)](https://community.sendbird.com/t/onsessiontokenrequired-callback-not-triggered-in-net-sdk-v4-1-1-similar-issue-found-in-js-sdk/11160)
**Author:** [@Chanhun](https://community.sendbird.com/u/Chanhun)\ **Replies:** 1\ **Last updated:** [August 12, 2025, 6:56am UTC](https://community.sendbird.com/t/onsessiontokenrequired-callback-not-triggered-in-net-sdk-v4-1-1-similar-issue-found-in-js-sdk/11160 "2025-08-12T06:56:23Z")
\[Problem/Question\] The OnSessionTokenRequired callback was not triggered when the session token expired in the .NET SDK (v4.1.1). We have confirmed a similar issue existed and was resolved in the JavaScript SDK, sugges… --- ## [.NET SDK(\>4.0.0) on .NET Framework WebSocket User-Agent Issue](https://community.sendbird.com/t/net-sdk-4-0-0-on-net-framework-websocket-user-agent-issue/11040)
**Author:** [@Chanhun](https://community.sendbird.com/u/Chanhun)\ **Replies:** 0\ **Last updated:** [June 18, 2025, 5:37am UTC](https://community.sendbird.com/t/net-sdk-4-0-0-on-net-framework-websocket-user-agent-issue/11040 "2025-06-18T05:37:28Z")
\[Problem/Question\] When using the Sendbird .NET SDK (version 4.0.1 and later) on .NET Framework 4.8, the WebSocket handshake fails with the following exception related to the User-Agent header: System.ArgumentException… --- ## [Get latest 10 messages](https://community.sendbird.com/t/get-latest-10-messages/5436)
**Author:** [@Nikhil\_Dhumne](https://community.sendbird.com/u/Nikhil_Dhumne)\ **Replies:** 3\ **Last updated:** [September 14, 2022, 4:50am UTC](https://community.sendbird.com/t/get-latest-10-messages/5436 "2022-09-14T04:50:06Z")
I have 100 group channel and I sent message to 20 group channel so how I can get latest 10 messages which I sent --- ## [How to log](https://community.sendbird.com/t/how-to-log/5126)
**Author:** [@Darius](https://community.sendbird.com/u/Darius)\ **Replies:** 1\ **Last updated:** [August 5, 2022, 2:45am UTC](https://community.sendbird.com/t/how-to-log/5126 "2022-08-05T02:45:20Z")
I am using the latest SendBird.dll in my Xamarin.iOS project that I got from here: My app keeps crashing so would like to see logs from the SDK that I am using. I am trying to do so like this: public override bool Fi… --- ## [GroupChannel.CreateChannel method params changed in new release](https://community.sendbird.com/t/groupchannel-createchannel-method-params-changed-in-new-release/5140)
**Author:** [@Darius](https://community.sendbird.com/u/Darius)\ **Replies:** 0\ **Last updated:** [July 22, 2022, 8:43pm UTC](https://community.sendbird.com/t/groupchannel-createchannel-method-params-changed-in-new-release/5140 "2022-07-22T20:43:32Z")
I recently updated the SendBird.dll in my Xamarin.iOS project with the latest one found here: Now my code won’t build anymore because the signature for the CreateChannel that I am calling has changed: GroupChannel.Cr… --- ## [Sendbird Chat stability improvements for iOS 15 users](https://community.sendbird.com/t/sendbird-chat-stability-improvements-for-ios-15-users/3928)
**Author:** [@Sendbird](https://community.sendbird.com/u/Sendbird)\ **Replies:** 0\ **Last updated:** [February 11, 2022, 12:53am UTC](https://community.sendbird.com/t/sendbird-chat-stability-improvements-for-ios-15-users/3928 "2022-02-11T00:53:06Z")
We’re always looking for opportunities to improve the scalability and stability of the Sendbird platform, and we recently applied an update to address a common cause of intermittent crashes for iOS 15 users. Applications… --- ## [Issues creating a POC in .Net 6](https://community.sendbird.com/t/issues-creating-a-poc-in-net-6/3998)
**Author:** [@Chris\_Sandberg](https://community.sendbird.com/u/Chris_Sandberg)\ **Replies:** 1\ **Last updated:** [February 23, 2022, 12:40am UTC](https://community.sendbird.com/t/issues-creating-a-poc-in-net-6/3998 "2022-02-23T00:40:31Z")
I’m attempting to create a simple console app to validate .NET support as a proof of concept and while I can initiate the client successfully when I attempt to have an existing user or a new user connect to the client I … --- ## [Unable to access image uploaded to Sendbird from .net library](https://community.sendbird.com/t/unable-to-access-image-uploaded-to-sendbird-from-net-library/946)
**Author:** [@angelo.sb0401](https://community.sendbird.com/u/angelo.sb0401)\ **Replies:** 1\ **Last updated:** [September 29, 2020, 11:27pm UTC](https://community.sendbird.com/t/unable-to-access-image-uploaded-to-sendbird-from-net-library/946 "2020-09-29T23:27:06Z")
I’m developing an Android application using Xamarin.Android, hence I’m using SendBird’s .net library. I have implemented a function to send a ‘FileMessage’ (image, in particular) from local phone directory path. The issu… --- ## [Xamarin Sample UI](https://community.sendbird.com/t/xamarin-sample-ui/994)
**Author:** [@Prayank](https://community.sendbird.com/u/Prayank)\ **Replies:** 0\ **Last updated:** [September 18, 2020, 6:41am UTC](https://community.sendbird.com/t/xamarin-sample-ui/994 "2020-09-18T06:41:45Z")
This sample UI project is no longer maintained and based on old SendBird SDK https://github.com/sendbird/SendBird-Xamarin I saved the files from above link and tried making few changes in VS 2019 to update the projec… --- ## [Injecting a HttpClient instance into the SendBird client](https://community.sendbird.com/t/injecting-a-httpclient-instance-into-the-sendbird-client/907)
**Author:** [@lfnunes](https://community.sendbird.com/u/lfnunes)\ **Replies:** 0\ **Last updated:** [September 7, 2020, 10:49am UTC](https://community.sendbird.com/t/injecting-a-httpclient-instance-into-the-sendbird-client/907 "2020-09-07T10:49:38Z")
I’m trying to use Sendbird’s .net SDK in my Blazor WebAssembly application ; Blazor runs .net code within a browser sandbox which requires any use of the HttpClient to be injected by Blazor, otherwise a ‘PlatformNotSuppo… --- ## [I want to make windows native app by .NET](https://community.sendbird.com/t/i-want-to-make-windows-native-app-by-net/236)
**Author:** [@satoru](https://community.sendbird.com/u/satoru)\ **Replies:** 4\ **Last updated:** [May 2, 2020, 6:25am UTC](https://community.sendbird.com/t/i-want-to-make-windows-native-app-by-net/236 "2020-05-02T06:25:28Z")
I know web and mobile type SDK. I want to make windows native app by .NET Do you know how to do? Thank you