How to use Hangfire with VB.NET

question
1

Hello Everyone,

I am able to start the Hangfire with vb.net and here is my code in case if someone needs it

Imports Hangfire
Imports Hangfire.SqlServer
Imports Microsoft.Owin
Imports Owin

<Assembly: OwinStartup(GetType(Scheduler.Startup))> 

Namespace Scheduler
    ''' <summary>
    ''' Configures the hangfire.
    ''' </summary>
    ''' <remarks></remarks>
    Public Class Startup
        Public Sub Configuration(app As IAppBuilder)
            Dim act = Sub(config As IBootstrapperConfiguration)
                          config.UseSqlServerStorage("dbConnection")
                          config.UseServer()
                      End Sub

            app.UseHangfire(act)
        End Sub
    End Class
End Namespace

Note in the line

config.UseSqlServerStorage("dbConnection")

I have used the name of my connection string in the web.config file.

1 Like
3

My aim was to configure the Hangfire in a central Api assembly so that I dont have to add the hangfire to all other assemblies. I am posting my solution here for others who need to do something similar

Blow is the interface and the class I added in the Api assembly

    ''' <summary>
    ''' Interface should be implemented by a class if it wants to run
    ''' </summary>
    ''' <remarks></remarks>
    Public Interface IJob

        Sub DoJob()

    End Interface


 Public Class Scheduler

        ''' <summary>
        ''' Adds a background job to be executed. 
        ''' </summary>
        ''' <typeparam name="T"></typeparam>
        ''' <param name="sJob"></param>
        ''' <remarks></remarks>
        Public Shared Sub AddBackgroundJob(Of T)()
            BackgroundJob.Enqueue(Of T)(Sub(job) CType(job, IJob).DoJob())
        End Sub
End Class

Then in one of the other assemblies I did this to add jobs to Hangfire, currently it just contains a method to add a Fire and Forget job.

Class StatScheduler
        Implements IJob

        Public Sub DoJob() Implements IJob.DoJob
           ' ToDo
        End Sub
End Class

Then finally we send job to the Api form the target assembly like this

 Scheduler.AddBackgroundJob(Of StatScheduler)()
4

@farid_masood, thank you for the code snippets that shows how to start Hangfire with VB.NET! I’ve replaced the first post of this topic to make it easy to find the answer.

5

Did you intentionally leave out the sJob parameter? Or is it missing in the Sub declaration?