How to get the specific text from word document?

hi,
i want to search specific string in whole document if it will be there in that documenent then it should get that paragraph 
thanq

Add the Microsoft.Office.Interop.Word reference into solution and
try this:

        //To read paragraph contents of a Word document using Microsoft.Office.Interop.Word DLL
        private void readFileContent(string path, int paraGraphNum)
        {
            int i = 0;

            StringBuilder sb = new StringBuilder();

            Microsoft.Office.Interop.Word.ApplicationClass wordApp = new ApplicationClass();

            object file = path;

            object nullobj = System.Reflection.Missing.Value;

            Microsoft.Office.Interop.Word.Document doc = wordApp.Documents.Open(ref file, ref nullobj, ref nullobj,
                                                                                ref nullobj, ref nullobj, ref nullobj,
                                                                                ref nullobj, ref nullobj, ref nullobj,
                                                                                ref nullobj, ref nullobj, ref nullobj);

            Microsoft.Office.Interop.Word.Paragraphs DocPar = doc.Paragraphs;

            // Count number of paragraphs in the file
            long parCount = DocPar.Count;

            // Step through the paragraphs
            while (i < parCount)
            {
                i++;
                if (i == paraGraphNum)
                {
                    sb.Append(DocPar[i].Range.Text);
                    break;
                }
            }

            doc.Close(ref nullobj, ref nullobj, ref nullobj);
            wordApp.Quit(ref nullobj, ref nullobj, ref nullobj);
            Console.WriteLine(sb.ToString());
        }