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[j clark]

How do you call a static C# method FROM Fortran in Visual Studio 2005?

I have tried various combinations of <namespace>.<class>.<method> in the ASSEMBLY_EXTERNAL statement and all fail with a compiler error: "Method Not Found...". The compiler apparently recognizes the .dll in the LIBRARY statement. Help. Please.

[PaulLaidler]

You will find instructions in the FTN95 help file under "Calling .NET methods from Fortran".

The class names etc are case-sensitive and the intelisense works OK so you can build up the name from the dropdown lists that automatically appear.

[Andrew]

Static methods are the simplest to call, in that you dont have to instantiate an object first. For a simple static method called PrintMe, in a class called Class1 in a namespace called StaticMethods, the Fortran should look like:

[j clark]

Thanks, gentlemen, but here is the exact, relevant code that
dosen't compile:

C#, built as a class library, VMSLink.dll:

namespace VMSLinkGroup {
public class VMSLink {
...
public static int RA_Connect(string ipaddr, out string result) {
...

and the FTN95 main program:

PROGRAM MAIN
...
LIBRARY "VMSLink.dll"
ASSEMBLY_EXTERNAL(NAME="VMSLink.RA_Connect") :: RA_CONNECT
...
STRING IPADDR, ERRMSG
...
IOSTAT = RA_CONNECT(IPADDR, ERRMSG)
...

The exact Error message is: "error 1117 The .NET Method
VMSLink.RAConnect was not found. Have you forgotton..."

What am I doing wrong?

[Andrew]

The code below is the correct usage of your class.

[j clark]

Thank you Andrew.

The "trick" is, apparently, simply to prefix the class with the namespace. The documentation could be just a tad more clear on that point. Thanks again.