在c#中读取突出显示的单词到txt文件

Question

I want read highlight color equal yellow words from word to text file.(correct answer questions) I am know read txt file but I dont read highlights texts.

MY WORD FILE :

I want read correct answers.

OUTPUT : C B C A

My code:

 object missObj = Missing.Value;
            object path = @"D:\test.doc";
            Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
            Microsoft.Office.Interop.Word.Document doc = app.Documents.Open(ref path, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj);
            foreach (Microsoft.Office.Interop.Word.Range range in doc.Words)
            {
                if (range.HighlightColorIndex == Microsoft.Office.Interop.Word.WdColorIndex.wdDarkYellow)
                {
                    Console.WriteLine(range.ToString());
                }
            }

Answer 1

First you cant find these words becouse it's not highlighted Microsoft.Office.Interop.Word.WdColorIndex.wdDarkYellow but just Microsoft.Office.Interop.Word.WdColorIndex.wdYellow , also You cant cast range.ToString need to use range.Text to get text. This sample show how get these words:

 public void GetColorText()
    {
        string output = String.Empty;
        object missObj = Missing.Value;
        object path = @"C:\Users\Mateusz\Desktop\test.docx";
        Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
        Microsoft.Office.Interop.Word.Document doc = app.Documents.Open(ref path, ref missObj, ref missObj,
            ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj, ref missObj,
            ref missObj, ref missObj, ref missObj, ref missObj, ref missObj);
        foreach (Microsoft.Office.Interop.Word.Range range in doc.Words)
        {
            if (range.HighlightColorIndex == Microsoft.Office.Interop.Word.WdColorIndex.wdYellow)
            {
                output += $"{range.Text} ";
            }
        }

        Console.WriteLine(output);
    }