Create word document and populate fields using mail merge in C#

Object oMissing = System.Reflection.Missing.Value;

Object oTrue = true;

Object oFalse = false;
Word.Application oWord = new Word.Application();
Word.Document oWordDoc = new Word.Document();
oWord.Visible = true;
Object oTemplatePath = System.Windows.Forms.Application.StartupPath+"\\Report.dot";
oWordDoc = oWord.Documents.Add(ref oTemplatePath, ref oMissing, ref oMissing, ref oMissing);
foreach (Word.Field myMergeField in oWordDoc.Fields)
{

iTotalFields++;

Word.Range rngFieldCode = myMergeField.Code;

String fieldText = rngFieldCode.Text;

if (fieldText.StartsWith(" MERGEFIELD"))

{

Int32 endMerge = fieldText.IndexOf("\\");

Int32 fieldNameLength = fieldText.Length - endMerge;

String fieldName = fieldText.Substring(11, endMerge - 11);

fieldName = fieldName.Trim();

if (fieldName == "Name")

{

myMergeField.Select();

oWord.Selection.TypeText(txt_name.Text);

}

if (fieldName == "Address")

{

myMergeField.Select();

oWord.Selection.TypeText(txt_address.Text);

}

if (fieldName == "Age")

{

myMergeField.Select();

oWord.Selection.TypeText(num_age.Text);

}

if (fieldName == "EAddress")

{

myMergeField.Select();

oWord.Selection.TypeText(txt_email.Text);

}

if (fieldName == "Company")

{

myMergeField.Select();

oWord.Selection.TypeText(txt_company.Text);

}

if (fieldName == "TelNo")

{

myMergeField.Select();

oWord.Selection.TypeText(txt_tel.Text);

}

if (fieldName == "ODetails")

{

myMergeField.Select();

oWord.Selection.TypeText(txt_odetails.Text);

}

}

}