For several days I have been trying to create a stand-alone desktop application (C# with VS Community 2022) to communicate with RSTAB 9.
Unfortunately, the application goes into a kind of deadlock after creating an Application object via:
RSTABApp = new ApplicationRSTAB(…);
This is, of course, inside a try-catch-finally block.
If the apiKeyValue is omitted, the application correctly jumps to the exception handling in the catch part.
If the apiKeyValue is used again, a deadlock occurs after the above line and the application no longer responds.
However, RSTAB is correctly blocked:
After that, I tried it with Python:
The script:
from dlubal.api import RSTAB
with RSTAB.Application(api_key_value='ak-…') as RSTAB_app:
# Retrieve the App Info
app_Info = RSTAB_app.get_application_info()
print(f"Version:\n{app_Info.name}")
works perfectly.
Now the same functionality as a C# console application:
using System;
using Dlubal.Api.Common;
using Dlubal.Api.RSTAB;
using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;
using RSTAB = Dlubal.Api.RSTAB;
ApplicationRSTAB? RSTABApp = null;
try
{
RSTABApp = new ApplicationRSTAB(apiKeyValue: "ak-…");
ApplicationInfo applicationInfo = await RSTABApp.get_application_info();
Console.WriteLine("Version: " + applicationInfo.Name);
if (RSTABApp != null)
{
Console.WriteLine("Running ...");
}
else
{
Console.WriteLine("NOT running!");
}
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}");
}
finally
{
if (RSTABApp != null) await RSTABApp.close_connection();
}
Console.WriteLine("\nFinished.");
This also works without problems.
After converting the console application into a desktop application (WinExe) or into a library (DLL) with the same RSTAB API code,
the application goes into a deadlock after
RSTABApp = new ApplicationRSTAB(apiKeyValue: "ak-…");
and no further line is executed.
Is this problem known? Can you help me with this?
Thank you very much.
M. Beck, Novum Structures GmbH