Read word document and convert characters to number using C# in ASP.Net

Refer the below query and change accordingly.

object filename = @"F:\Test.docx";
Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
Microsoft.Office.Interop.Word.Document doc = new Microsoft.Office.Interop.Word.Document();
object readOnly = false;
object isVisible = true;
object missing = System.Reflection.Missing.Value;
doc = app.Documents.Open(ref filename, ref missing, ref readOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref isVisible);
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);
    }
}

DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)), new DataColumn("Character"), new DataColumn("Number", typeof(int)) });
for (int i = 0; i < data.Count; i++)
{
 
    string txt = data[i].ToUpper();
    char chr = txt[0];
    int number = (int)chr;
    int value = 0;
    if (number > 1039)
    {
        value = (number + 1) - 1040;
    }
    else
    {
        value = (number + 1) - 65;
    }
    dt.Rows.Add((i + 1), txt , value);
}
gvDetails.DataSource = dt;
gvDetails.DataBind();
doc.Close(ref missing, ref missing, ref missing);

OutPut