c# - Bootstrap Uno API LibreOffice exception

Question

With the following code:

static void Main()
{
    try
    {
        var context = uno.util.Bootstrap.bootstrap();
    }
    catch (Exception ex)
    {
       Console.WriteLine(ex.toString());
    }
}

I can start Writer of LibreOffice. This works fine with Version 4.4.4 but after installing version 5.0.0 and with new SDK Bootstrap.bootstrap() throws the exception:

"External component has thrown an exception"

Has anyone faced the same problem or some solution? (.NET 4.0, Windows 7 64-bit, LibreOffice 5.0 Lite)

Answer 1

I have managed to solve the problem by setting the UNO_PATH environment variable before starting the soffice.exe server:

using static System.Environment;

var unoPath = @"C:Program FilesLibreOffice 5program"
// when running 32-bit LibreOffice on a 64-bit system, the path will be in Program Files (x86)
// var unoPath = @"C:Program Files (x86)LibreOffice 5program"

SetEnvironmentVariable("UNO_PATH", unoPath, EnvironmentVariableTarget.Process);
SetEnvironmentVariable("PATH", GetEnvironmentVariable("PATH") + @";" + unoPath, EnvironmentVariableTarget.Process);

This was required because LibreOffice 5's program directory does not have "URE" subdirectory anymore (previous versions did) which is required for UNO layer.