How to use LibreOffice UNO API in .NET 8 on Debian?

Question

I am developing a .NET 8 cross-platform application on Debian, which needs to interact with LibreOffice via UNO API. What i'm trying to accomplish is to save an opened Libre Office tab.

Here is my approximate code:

using unoidl.com.sun.star.frame;
using unoidl.com.sun.star.lang;
using unoidl.com.sun.star.uno;
using unoidl.com.sun.star.beans;
    
public void SaveLibreOfficeDocument()
{
    XComponentContext xLocalContext = uno.util.Bootstrap.bootstrap();
    XMultiComponentFactory xMCF = xLocalContext.getServiceManager();
    
    object desktop = xMCF.createInstanceWithContext("com.sun.star.frame.Desktop", xLocalContext);
    XComponentLoader xCL = (XComponentLoader)desktop;
    XModel xModel = (XModel)xCL.loadComponentFromURL("private:factory/scalc", "_blank", 0, new PropertyValue[0]);
    
    // Now, save the document
    XStorable xStorable = (XStorable)xModel;
    xStorable.store();
}

The problem is that I don't really know how to include all this packages (usings are highlighted as errors).

Were you able to follow the installation instructions as detailed here: api.libreoffice.org/docs/install.html? It says, for .net, you need to install Microsoft .Net SDK. — SoftwareDveloper
– SoftwareDveloper, Commented Mar 17 at 14:03
@SoftwareDveloper could you please explicitly explain how do I include it to my project. In the guide you provided, there is only explanations about installing it ti my machine, not including to project — sausage_mouse
– sausage_mouse, Commented Mar 18 at 7:56
There is a sample CSharp app with a sample Makefile at api.libreoffice.org/examples/CLI/CSharp/Spreadsheet. You need to add reference to the files in sdk''s cli directory and compile your program. What IDE are you using to develop your code? — SoftwareDveloper
– SoftwareDveloper, Commented Mar 18 at 16:48
I will compile your source and try to run it by editing the makefile. Pl keep the question open. — SoftwareDveloper
– SoftwareDveloper, Commented Mar 20 at 14:44

SoftwareDveloper · Accepted Answer · 2025-03-24 20:30:02Z

3

+50

These are the steps I followed so far on my Ubuntu machine:

Install LibreOffice sdk: sudo apt-get install libreoffice-dev
Locate the setenv file for LibreOffice by typing the following command on the terminal: locate setsdkenv_unix.sh
Try executing the script: . /usr/lib/libreoffice/sdk/setsdkenv_unix.sh
Install Microsoft SDK for Unubtu/Debian/RHEL: sudo apt-get update && sudo apt-get install -y dotnet-sdk-8.0
I believe the development environment is set up for C#.
If you can post your sample code, I will try to compile and execute it.

Update:
1. On my Ubuntu server, run the following steps:
2. mkdir Sample
3. cd Sample
4. dotnet new console
5. create a folder named winlib; mkdir winlib
6. I installed the LibreOffice SDK for Windows on a Windows machine and copied the dlls from <LibreOffice SDK Installation Folder>\sdk\cli into my Ubuntu machine's winlib directory.
7. Edit Sample.csproj file and add below lines
  
  <ItemGroup>
  
  <Reference Include="./winlib/*.dll" />
  
  </ItemGroup>
8. There should be a file named Program.cs. Add your code to it and try building te project by typing in the command dotnet build. THis should compile without errors.

edited Mar 24 at 20:30

answered Mar 20 at 14:35

SoftwareDveloper

1,0413 gold badges11 silver badges34 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

sausage_mouse Mar 20 at 15:42

Thank you. You can see the sample of a code in the body of the question. Also note, that this app would not be run only on my machine, so try avoid installing external packages to users machine

asmtilde · Accepted Answer · 2025-03-20 02:27:06Z

2

You're dealing with the 'using' errors because .NET 8 doesn't have the UNO API libraries referenced. Here are some steps to fix the problem:

sudo apt-get install libreoffice-dev

This package contains the header files and libraries for making LibreOffice extensions and interacting with the UNO API.

You will also want to add the UNO API references to your .NET project by adding the LibreOffice libraries, which are usually located in /usr/lib/libreoffice/program/. However, manually referencing those libraries can be complex and platform-dependent.

answered Mar 20 at 2:27

asmtilde

294 bronze badges

1 Comment

sausage_mouse Mar 20 at 8:25

thank you. That is almost what i needed. But I dont know how to add these libs. Is the directory you provided there are a lot of .so files. How do I include them. Also how do I know which ones to include. Also, ill need my program to be able to run on many machines, not only mine. So I'll need to make a nuget package. Could you please help me with that

Collectives™ on Stack Overflow

How to use LibreOffice UNO API in .NET 8 on Debian?

2 Answers 2

1 Comment

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related