Unable to connect to adapter class due to dll issue

[kiran7212]

Hello, I am new to Ninja Script and Ninja Trader. Can anyone please help me to fix this issue I'm getting while trying to establish a connection to Ninja Trader Adpater class using NinjaTrader.Core.dll.

Here is what I am doing. I am creating a new ProviderApi Class by using the methods of existing Ninja Trader Adapter class. The order of steps I need to do is 1. Create Connection() using Connection Class 2. Execute any other methods like GetSymbolInfo() 3.DisConnect().

I had also created a Xunit testing to test these methods. While I'm trying to those methods Connect() is not working to establish the connection. And throwing this exception

Message: System.TypeInitializationException : The type initializer for '<Module>' threw an exception.
---- System.ArgumentNullException : Value cannot be null.
Parameter name: ptr

Please find attachements for the code and Exception details. And please let me know how can I fix it.

Thanks in advance.

[NinjaTrader_ChelseaB]

Hello kiran7212,

Support for the API is limited and our NinjaTrader support staff is not able to assist with external programs that are not NinjaScripts run in NinjaTrader.

This thread will remain open for any community members that would like to assist.

That said, I have an example project that demonstrates how to connect and how to receive data.

https://ninjatrader.com/support/forum/showthread.php?p=514442#post514442

Do you have NinjaTrader 8 open?
May I also confirm NinjaTrader 7 is closed?

Are you using the default port or have you attempted to change the API port at all?

[kiran7212]

Thank you NinjaTrader_ChelseaB.

First I had worked on the method which is generated by the NinjaScript for connection establishment. But even with this method also I got the same exception as

Message: System.TypeInitializationException : The type initializer for '<Module>' threw an exception.
---- System.ArgumentNullException : Value cannot be null.
Parameter name: ptr

Later I had tried with some other way by checking in to Ninja support forums. Can you please let me know that Can I establish a connection using NinjaScipt generated method as follows. Or suggest me any other way using ninja script.

Here is my ninja script method.
/// <summary>
/// Establish the connection. This method is called only once during the lifetime of an adapter.
/// </summary>
public void Connect(Cbi.IConnection connection)
{
// Connection.Options holds all relevant information to establish/manage the connection.
myConnection = connection;

// Cast this object to the appropriate type.
options = (SampleOpenConnectOptions)myConnection.Options;

// Trace any relevant connection option settings. Be sure to provide the appropriate CultureInfo so values are formatted as you expect.
if (myConnection.Trace.Connect)
myConnection.TraceCallback(string.Format(CultureIn fo.InvariantCulture, $"({options.Name}) SampleOpenConnect.Connect: user='{options.User}'"));

// Initialize and connect to the provider API (if necessary)
api = new ProviderApi();

// Notify NT if any API call fails
if (!api.Connect(options.User, options.Password))
{
// primary and price feeds are disconnected
myConnection.ConnectionStatusCallback(Cbi.Connecti onStatus.Disconnected, Cbi.ConnectionStatus.Disconnected, Cbi.ErrorCode.LogOnFailed, "Unable to connect to provider.");
return;
}
// Let NT know we're connected
myConnection.ConnectionStatusCallback(Cbi.Connecti onStatus.Connected, Cbi.ConnectionStatus.Connected, Cbi.ErrorCode.NoError, string.Empty);
return;
}

And the quesries u asked me
Do you have NinjaTrader 8 open? - Yes
May I also confirm NinjaTrader 7 is closed? - Yes

Are you using the default port or have you attempted to change the API port at all? - No I did not changed anything.

Thanks

[NinjaTrader_ChelseaB]

Hello kiran7212,

Unfortunately, there is not enough information here for me to say.

However, I am not recognizing any of the code you have provided using methods from the NinjaTrader API.

Is this for a different program that is not NinjaTrader?

May I confirm you have modeled your code after the working example I have provided you a link to?