EventHubsConnectionStringBuilder

Guest User

7y1.4kCognitive Services

Hi Team

I want to pass 3 arguments that i declared them as private readonly objects.

Inside my main class method i get the error on EventHubsConnectionStringBuilder. e.g

private readonly static s_eventHubsCompatibleEndpoint = "'sb://iothb-ns.. ;

private readonly static s_eventHubsCompatiblePath ="testiothubs";

private static EventHubClient s_eventHubClient;

private static async Task Main(string[] args) {

var connectionString = new EventHubsConnectionStringBuilder(s_eventHubsCompatibleEndpoint, s_eventHubsCompatiblePath,

s_eventHubClient = EventHubClient.CreateFromConnectionString(connectionString.ToString()));

"error EventHubsConnectionStringBuilder does not contain constructor for 3 argument. What am i missing here please help. Im trying to readmessage2device.

3 Replies

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Rajanikant Hawaldar7y ago
Accepted answer
Hi Gcobani, Error clearly said there is no constructor which takes 3 arguments, solution is you need to pass one more argument to EventHubsConnectionStringBuilder construnctor.
There are 4 contrunctor in this class. They are as below
1)EventHubsConnectionStringBuilder(String)
ConnectionString format: Endpoint=sb://namespace_DNS_Name;EntityPath=EVENT_HUB_NAME;SharedAccessKeyName=SHARED_ACCESS_KEY_NAME;SharedAccessKey=SHARED_ACCESS_KEY

2)EventHubsConnectionStringBuilder(Uri, String, String, String)
Build a connection string consumable by CreateFromConnectionString(String)

3) EventHubsConnectionStringBuilder(Uri, String, String, String, TimeSpan)
Build a connection string consumable by CreateFromConnectionString(String)
4)EventHubsConnectionStringBuilder(Uri, String, String, TimeSpan)
Build a connection string consumable by CreateFromConnectionString(String)
Refer below link
https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.eventhubs.eventhubsconnectionstringbuilder?view=azure-dotnet
Saravanan Ganesan3y ago
The error you are encountering is because the EventHubsConnectionStringBuilder class does not have a constructor that takes three arguments for the EventHubsCompatibleEndpoint, EventHubsCompatiblePath, and EventHubClient variables.

To construct the EventHubsConnectionStringBuilder, you need to use the correct constructor that takes the connection string or the Event Hub namespace, event hub name, and the shared access key. Here's how you can modify your code:

private static readonly string s_eventHubsCompatibleEndpoint = "sb://iothb-ns..";
private static readonly string s_eventHubsCompatiblePath = "testiothubs";
private static readonly string s_sharedAccessKeyName = "YourSharedAccessKeyName";
private static readonly string s_sharedAccessKey = "YourSharedAccessKey";

private static EventHubClient s_eventHubClient;

private static async Task Main(string[] args) {
var connectionStringBuilder = new EventHubsConnectionStringBuilder(
new Uri(s_eventHubsCompatibleEndpoint),
s_eventHubsCompatiblePath,
s_sharedAccessKeyName,
s_sharedAccessKey);

s_eventHubClient = EventHubClient.CreateFromConnectionString(connectionStringBuilder.ToString());

// Rest of your code here
}

In this modified code, we are using the appropriate constructor of EventHubsConnectionStringBuilder that takes the necessary arguments for constructing the connection string. Replace "YourSharedAccessKeyName" and "YourSharedAccessKey" with the actual values for your Event Hub's shared access policy.
Guest User7y ago
Thanks mate, error is gone. I saw what i did, was not comply with azure standard rule in passing those argument lists, there few left them. Then again thanks for the documentation, it helped.