.net - C# check merge field check box in a word document -

just wondering how check check box on word document, have c# window forms application filling in merge fields data obtained forms such textboxes , comboboxes. though wondering how check text box in c#?

i have been trying find awhile now, , have resulted in asking question here.

the code below how connect word document , fill out merge field on document.

        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;          if (file.exists("pathname.txt"))         {             filestream file = new filestream("pathname.txt", filemode.open, fileaccess.read);             streamreader reader = new streamreader(file);             pathname = reader.readline();         }          object otemplatepath = pathname;          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(firstname.text);                 }                  if (fieldname == "name2")                 {                     mymergefield.select();                     oword.selection.typetext(textbox6.text);                 }                  if (fieldname == "lastname1")                 {                     mymergefield.select();                     oword.selection.typetext(textbox3.text);                 }        } 

any appreciated.

thank you.