This function opens the model on location file name.
References inside to other ontologies will be included.
A handle to the model will be returned, or 0 in case something went wrong.


public const string enginedll = @"engine.dll";

[DllImport(enginedll, EntryPoint = "OpenModelW")]
public static extern Int64 OpenModelW(string fileName);

[DllImport(enginedll, EntryPoint = "OpenModelW")]
public static extern Int64 OpenModelW(byte[] fileName);    

Property fileName

Size: 32 bit / 4 byte (reference)
The file name of the file as available in the file system in Unicode (wchar_t *). The given wchar_t array will not be adjusted. The size of each wchar_t element is depending on the OS, both 16 bit / 2 bytes wchar_t elements as well as 32 bit / 4 byte wchar_t elements are recognized and supported.

Example (based on pure API calls)

Here you can find code snippits that show how the API call OpenModelW can be used.

using RDF;      //  include at least engine.cs within your solution


Int64 GetFileInstanceCount(string fileName)
    Int64   instanceCount = 0,
            model = RDF.engine.OpenModelW(System.Text.Encoding.Unicode.GetBytes(fileName));
    if (model)
        Int64   myInstance = RDF.engine.GetInstancesByIterator(model, 0);

        while (myInstance != 0)
            myInstance = RDF.engine.GetInstancesByIterator(model, myInstance);


    return  instanceCount;

int main()
    Int64   noInstances = GetFileInstanceCount("c:\\created\\myFile.bin");