Ok. I found the solution here.
The final code is as follows:
Application word = new Application();
Document doc = new Document();
object fileName = path;
// Define an object to pass to the API for missing parameters
object missing = System.Type.Missing;
doc = word.Documents.Open(ref fileName,
ref missing, ref missing, ref missing, ref missing,
ref missing, ref missing, ref missing, ref missing,
ref missing, ref missing, ref missing, ref missing,
ref missing, ref missing, ref missing);
String read = string.Empty;
List<string> data = new List<string>();
for (int i = 0; i < doc.Paragraphs.Count; i++)
{
string temp = doc.Paragraphs[i + 1].Range.Text.Trim();
if (temp != string.Empty)
data.Add(temp);
}
((_Document)doc).Close();
((_Application)word).Quit();
GridView1.DataSource = data;
GridView1.DataBind();