I am trying to use WordprocessingDocument of OpenXML in C# to create MS WORD document.
I succeeded to add the normal paragraph, but, I have problem on adding math equation.

I got the idea to use OfficeMath from GPT, and I tried to add the simple text data into OfficeMath as follows,

            OfficeMath officeMath = new OfficeMath();

            Run run = new Run();
            run.Append(new Text("test text"));
            officeMath.Append(run);
            return officeMath;

Here I had an error in execution on the line “officeMath.Append(run);”.

The exception shows “System.InvalidOperationException: ‘Non-composite elements do not have child elements.'”
despite I add the text element to “run”.

Is the any example to add math equation to the paragraph for WordprocessingDocument in C#?