Console.ReadKey() Error

[YaraZakaria]

Hi, I'm following the steps as they are but i kept getting the following error :

Unhandled Exception: System.InvalidOperationException: Cannot read keys when either application does not have a console or when console input has been redirected. Try Console.Read.
at System.ConsolePal.ReadKey(Boolean intercept)
at System.Console.ReadKey()
at BasicSendReceiveQuickStart.Program.MainAsync(String ServiceBusConnectionString, String QueueName) in C:\Users\SMQK3813\source\repos\azure-service-bus\samples\DotNet\GettingStarted\BasicSendReceiveQuickStart\BasicSendReceiveQuickStart\Program.cs:line 57
at BasicSendReceiveQuickStart.Program.Main(String[] args) in C:\Users\SMQK3813\source\repos\azure-service-bus\samples\DotNet\GettingStarted\BasicSendReceiveQuickStart\BasicSendReceiveQuickStart\Program.cs:line 34

So I changed the "Console.ReadKey()" in the code to "Console.Read()" and now it works as expected.

Is there a simple explanation for this?

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Document Details

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• ID: 47fbe533-9b56-de1e-0bf0-b5acc091541b
• Version Independent ID: 146c649d-e037-b3f0-0536-743a63fb1e3f
• Content: Quickstart - Use the Azure portal to create a Service Bus queue
• Content Source: articles/service-bus-messaging/service-bus-quickstart-portal.md
• Service: service-bus-messaging
• GitHub Login: @spelluru
• Microsoft Alias: spelluru

[mike-urnun-msft]

Hello @YaraZakaria Thank you for your feedback! We will review and update as appropriate.

[PramodValavala-MSFT]

@YaraZakaria I believe Console.ReadKey specifically looks for a key press by the user which will not work when there is no interactive console.
For example, when using input redirection or in a CI job.

On the other hand, Console.Read and Console.ReadLine just obtain the next character / set of characters from the input stream instead, which could be either input from an interactive console or stream redirected to it.

[YaraZakaria]

@PramodValavala-MSFT So how was I supposed to make it work without changing the code and by using the Console.ReadKey as supposed?

[PramodValavala-MSFT]

@YaraZakaria Could you share details on the environment where you are running this code like the IDE, OS, etc.

[YaraZakaria]

@PramodValavala-MSFT I'm running this on my VM having Windows Server 2016 Standard and Visual Studio Entreprise 2019. And the commands in git bash command.

[PramodValavala-MSFT]

@YaraZakaria There seems to be a couple of inconsistencies when running interactive windows programs that use native windows API in mintty (powers git-bash).

If you are running the dotnet command in CMD or PowerShell, you shouldn't see this problem.

For git-bash, you will have to run to run the dotnet command prefixed with winpty

winpty dotnet BasicSendReceiveQuickStart.dll -ConnectionString "myConnectionString" -QueueName "myQueueName"

[YaraZakaria]

@PramodValavala-MSFT I tried with winpty and it works as expected.

Thank you

[PramodValavala-MSFT]

@YaraZakaria Glad we could help.

We will now proceed to close this thread. If there are further questions regarding this matter, please tag me in your reply. We will gladly continue the discussion and we will reopen the issue.

[chucklu]

Hi @YaraZakaria , @PramodValavala-MSFT ,
I encounter the same problem, but I don't know how to use winpty on Azure environment. Is there a tutorial or article about how to use winpty on Azure.

[chucklu]

Hi @PramodValavala-MSFT ,

If you are running the dotnet command in CMD or PowerShell, you shouldn't see this problem.

We encounter the problem in powershell

2022-03-23T10:03:41.3188553Z Unhandled Exception: System.InvalidOperationException: Cannot read keys when either application does not have a console or when console input has been redirected from a file. Try Console.Read.
2022-03-23T10:03:41.3189560Z    at System.Console.ReadKey(Boolean intercept)
2022-03-23T10:03:41.3190532Z    at UK.Connect.Tool.CopyDll.Program.Main(String[] args) in D:\a\1\s\UK.Connect\tool\UK.Connect.Tool.CopyDll\Program.cs:line 46
2022-03-23T10:03:43.5270171Z ##[error]PowerShell exited with code '1'.
2022-03-23T10:03:43.5773096Z ##[section]Finishing: PowerShell