Line.Messaging 0.5.0-alpha

This is a prerelease version of Line.Messaging.
There is a newer version of this package available.
See the version list below for details.
Install-Package Line.Messaging -Version 0.5.0-alpha
dotnet add package Line.Messaging --version 0.5.0-alpha
<PackageReference Include="Line.Messaging" Version="0.5.0-alpha" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Line.Messaging --version 0.5.0-alpha
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Line.Messaging, 0.5.0-alpha"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install Line.Messaging as a Cake Addin
#addin nuget:?package=Line.Messaging&version=0.5.0-alpha&prerelease

// Install Line.Messaging as a Cake Tool
#tool nuget:?package=Line.Messaging&version=0.5.0-alpha&prerelease
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

LINE Messaging API

This is a C# implementation of the LINE Messaging API.

Getting Started

LineMessagingApiClient Class

HttpClient-based asynchronous methods.

Task ReplyMessageAsync(string replyToken, IList<ISendMessage> messages)
Task ReplyMessageAsync(string replyToken, params string[] messages)
Task PushMessageAsync(string to, IList<ISendMessage> messages)
Task PushMessageAsync(string to, params string[] messages)
Task MultiCastMessageAsync(IList<string> to, IList<ISendMessage> messages)
Task MultiCastMessageAsync(IList<string> to, params string[] messages)
Task<ContentStream> GetContentStreamAsync(string messageId)
Task<UserProfile> GetUserProfileAsync(string userId)
Task<byte[]> GetContentBytesAsync(string messageId)
Task<UserProfile> GetGroupMemberProfileAsync(string groupId, string userId)
Task<UserProfile> GetRoomMemberProfileAsync(string roomId, string userId)
Task<IList<UserProfile>> GetGroupMemberProfilesAsync(string groupId)
Task<IList<UserProfile>> GetRoomMemberProfilesAsync(string roomId)
Task<GroupMemberIds> GetGroupMemberIdsAsync(string groupId, string continuationToken)
Task<GroupMemberIds> GetRoomMemberIdsAsync(string roomId, string continuationToken = null)
Task LeaveFromGroupAsync(string groupId)
Task LeaveFromRoomAsync(string roomId)


Examples of use in Azure functions.

Parse and process Webhook-Events

see FunctionAppSample/

using Line.Messaging;
using Line.Messaging.Webhooks;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Azure.WebJobs.Host;
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;

namespace FunctionAppSample

  public static class HttpTriggerFunction
    static LineMessagingClient lineMessagingClient;

    static HttpTriggerFunction()
      lineMessagingClient = new LineMessagingClient(System.Configuration.ConfigurationManager.AppSettings["ChannelAccessToken"]);
      var sp = ServicePointManager.FindServicePoint(new Uri(""));
      sp.ConnectionLeaseTimeout = 60 * 1000;

    public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = null)]HttpRequestMessage req, TraceWriter log)
      IEnumerable<WebhookEvent> events;
        //Parse Webhook-Events
        var channelSecret = System.Configuration.ConfigurationManager.AppSettings["ChannelSecret"];
        events = await req.GetWebhookEventsAsync(channelSecret);
      catch (InvalidSignatureException e)
        //Signature validation failed
        return req.CreateResponse(HttpStatusCode.Forbidden, new { Message = e.Message });

        var connectionString = System.Configuration.ConfigurationManager.AppSettings["AzureWebJobsStorage"];
        var tableStorage = await LineBotTableStorage.CreateAsync(connectionString);
        var blobStorage = await BlobStorage.CreateAsync(connectionString, "linebotcontainer");
        //Process the webhook-events
        var app = new LineBotApp(lineMessagingClient, tableStorage, blobStorage, log);
        await app.RunAsync(events);
      catch (Exception e)

      return req.CreateResponse(HttpStatusCode.OK);


Process Webhook-events using the class that inherited the WebhookApplication class


public abstract class WebhookApplication
  protected virtual Task OnMessageAsync(MessageEvent ev);
  protected virtual Task OnJoinAsync(JoinEvent ev);
  protected virtual Task OnLeaveAsync(LeaveEvent ev);
  protected virtual Task OnFollowAsync(FollowEvent ev);
  protected virtual Task OnUnfollowAsync(UnfollowEvent ev);
  protected virtual Task OnBeaconAsync(BeaconEvent ev);
  protected virtual Task OnPostbackAsync(PostbackEvent ev);
class LineBotApp : WebhookApplication
  private LineMessagingClient MessagingClient { get; }
  private TraceWriter Log { get; }
  public WebhookApplication(LineMessagingClient lineMessagingClient,TraceWriter log)
      MessagingClient = lineMessagingClient;
      Log = log;

  protected override async Task OnMessageAsync(MessageEvent ev)
    switch (ev.Message.Type)
      case EventMessageType.Text:
        await MessagingClient.ReplyMessageAsync(ev.ReplyToken, ((TextEventMessage)ev.Message).Text);

      case EventMessageType.Image:
      case EventMessageType.Audio:
      case EventMessageType.Video:
      case EventMessageType.File:
      case EventMessageType.Location:
      case EventMessageType.Sticker:


  protected override async Task OnFollowAsync(FollowEvent ev)
      throw new NotImplementedException();

  protected override async Task OnUnfollowAsync(UnfollowEvent ev)
      throw new NotImplementedException();

  protected override async Task OnJoinAsync(JoinEvent ev)
    throw new NotImplementedException();

  protected override async Task OnLeaveAsync(LeaveEvent ev)
    throw new NotImplementedException();

  protected override Task OnBeaconAsync(BeaconEvent ev)
    throw new NotImplementedException();

  protected override async Task OnPostbackAsync(PostbackEvent ev)
    throw new NotImplementedException();


see also FunctionAppSample/LineBotApp.cs

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on Line.Messaging:

Repository Stars
LINE Messaging API for .Net
Version Downloads Last updated
1.4.5 15,214 1/20/2019
1.4.4 599 12/27/2018
1.4.3 637 11/23/2018
1.4.2 496 11/13/2018
1.4.1 1,149 9/21/2018
1.3.1 1,017 6/20/2018
1.2.6 843 5/2/2018
1.2.5 617 4/15/2018
1.2.4 1,898 3/4/2018
1.2.2 731 2/7/2018
1.2.1 1,249 12/14/2017
1.1.0 877 12/1/2017
1.0.1 837 11/9/2017
0.7.0-beta 588 11/4/2017
0.6.0-beta 573 10/7/2017
0.5.0-alpha 611 10/4/2017
0.4.0-alpha 563 9/18/2017
0.3.1-alpha 551 9/10/2017
0.2.0-alpha 559 8/27/2017
0.1.0-alpha 604 8/22/2017

- Supports the datetime picker template action.
- Improved the error handling.