Couldn’t get equations in html when convert word .docx file to html file in C#.

I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.

At the time of converting from word file to html my equations which are in the word document file was convert into image.

`Globals.ThisAddIn.Application.ActiveDocument.Select();

Microsoft.Office.Interop.Word.Document doc = Globals.ThisAddIn.Application.ActiveDocument;

string result = Path.GetTempPath();

string tmpFileName …

application coding csharp data database dotnet file html save store word