How to move the cursor to the particullar paragraph using MicroSoft.office.interop.Word?

You use the Select method to set the cursor position in a Word document. Normally the Select method will be used to highlight a range of text, but if you use the same start and end positions in the Range property it just sets the cursor position.

Your code would look something like this:

using Word=Microsoft.Office.Interop.Word;
...
Word.Document wordDoc = ..... // Obtain reference to Word document we want to set the cursor position of
wordDoc.Range(10, 10).Select(); // The Range property identifies a position in the document, and the Select call moves the cursor there

This will move the cursor to the 10th character in your document.