Calling into .NET from AX7 - Is Polymorphism supported?

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Posted on by Community Member Microsoft Employee

Hi,

I have the following problem that I don't really understand. I have an event hook on the CustTable, which calls into a .NET class

[DataEventHandler(tableStr(CustTable), DataEventType::Updated)]
public static void CustTable_onUpdated(Common sender, DataEventArgs e)

{

CustTable ct = sender as CustTable;
var dispatcher = new Caller.Dispatcher();
dispatcher.Call(ct);

}

My .NET class has the following method

public string Call(Dynamics.AX.Application.CustTable cTable)

{
...
}

However, the compiler complains

Severity Code Description Project File Line Suppression State
Error Method 'Call(System.Object)' is not found on type 'Caller.Dispatcher'. ......

However, if I used this signature;

public string Call(Microsoft.Dynamics.Ax.Xpp.Common cTable)
{
...
}

It doesn't complain. If I have both methods, it will still call the Base (Common) one, rather than the CustTable method.

Can anyone shed some light on this?

Thanks, Jason

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