Hello,
The special cell? Cell in Word table or just text in .doc file?
If you just want to search special text, the following code may be helpful.
Document document = new Document();
document.LoadFromFile(@"..\..\..\DocSample.doc");
TextSelection[] textSelections = document.FindAllString("TextString", true, true);
For writing, you need to replace the found text if you want to write words in the same place. Or you can create a new paragraph to write words.
Replace:
document.Replace("TextString", "ReplaceString",true,true);
Write:
Section section = document.Sections[0];
Paragraph paragraph = section.AddParagraph();
paragraph.AppendText("New String");
You can visit
.NET Word project to get more information.