با سلام
کد زیر را تست کرده ام:
=============
private void button3_Click(object sender, EventArgs e)
{
Object refmissing = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Word.Application winword = new Microsoft.Office.Interop.Word.Application();
Object refPathFile = "c:\\dabirkhanieh.doc";
winword.Visible = true;
Microsoft.Office.Interop.Word.Document doc = winword.Documents.Open(ref refPathFile,ref refmissing, ref refmissing, ref refmissing, ref refmissing, ref refmissing, ref refmissing,
ref refmissing, ref refmissing, ref refmissing, ref refmissing, ref refmissing, ref refmissing, ref refmissing,
ref refmissing, ref refmissing);
}
با تشکر