private void docChange()
        {
            ZipArchive zip = ZipFile.Open("template.docx", ZipArchiveMode.Update);
            Directory.CreateDirectory("temp");
            zip.ExtractToDirectory("temp");
            
            StringBuilder stb = new StringBuilder(File.ReadAllText("temp/word/document.xml"));
            string serial = SnTb.Text;
            string model = ModelTb.Text;
            string docnum = DocNumTb.Text;
            stb.Replace("DATEDATEDATE", DateTime.Today.ToShortDateString());
            stb.Replace("NUMNUMNUM", serial);
            stb.Replace("MODELMODELMODEL", model);
            stb.Replace("DOCNUMDOCNUM", docnum);
            File.WriteAllText("temp/word/document.xml", stb.ToString());
            if (!Directory.Exists("Талоны"))
            {
                Directory.CreateDirectory("Талоны");
            }
            ZipFile.CreateFromDirectory("temp", "Талоны\\"+ docnum+'_' + model + '_' + serial + ".docx");
            
            Directory.Delete("temp", true);
            
            ResetBtn_Click(null, null);
            System.Diagnostics.Process.Start("Талоны");
            System.Diagnostics.Process.Start("Талоны\\" + docnum + '_' + model + '_' + serial + ".docx");
        
        }