IJCAD .NET Plotter Output Results

AutoCAD's VBA receives the following results when outputting files and plotters:

boolir;
GcadDocument AOBJ;
if()// For file output
{
    ir=AOBJ.Plot.PlotToFile(@"C:\Temp\test.PLT");
}
For else//PLOTER output:
{
    ir = AOBJ.Plot.PlotToDevice();
}

I changed the above part to .NET(C#) based on the contents of the following URL.
Is there any way to receive successful or unsuccessful results?

.NET - Print your current layout