How to add incremental numbers to the end of a filename when saving in asp.net web forms c# application?

Question

The code below is supposed to rename a file with numbers if another file with the same name already exists. For example, test.docx, test(2).docx, etc... It works just fine on my localhost, but when I put it on the web server it changes the file name to test.docx(2). Any help would be greatly appreciated. Here's what I'm currently using:

protected void btn_submit_new_doc_vsn_Click(object sender, EventArgs e)
    {
        int i = 0;
        string filename = fu_new_doc_vsn.FileName;
        if (fu_new_doc_vsn.HasFile)
        {
            while (System.IO.File.Exists(Server.MapPath("~/Data/") + filename))
            {
                i++;
                filename = fu_new_doc_vsn.FileName + " (" + i.ToString() + ")";
            }
            fu_new_doc_vsn.PostedFile.SaveAs(Server.MapPath("~/Data/") + filename);
        }

        doc_path_text.Text = (Server.MapPath("~/Data/") + filename);

        SqlConnection idrf_cnxn = new SqlConnection("Data Source=SRVER\\MYDB;Initial Catalog=idrf;Integrated Security=True");
        {
            SqlCommand new_doc_cmd = new SqlCommand("Insert Into tbl_doc(doc_title, doc_type_list, doc_org_list, doc_dept_list, doc_desc, prior_contract_cd, legal_comp_contract_id, doc_upld_dt, doc_path, crnt_doc_stat_list, vendor_id_fk) Values(LTRIM(RTRIM(@doc_title)), LTRIM(RTRIM(@doc_type_list)), LTRIM(RTRIM(@doc_org_list)), LTRIM(RTRIM(@doc_dept_list)), LTRIM(RTRIM(@doc_desc)), LTRIM(RTRIM(@prior_contract_cd)), LTRIM(RTRIM(@legal_comp_contract_id)), LTRIM(RTRIM(@doc_upld_dt)), LTRIM(RTRIM(@doc_path)), LTRIM(RTRIM(@crnt_doc_stat_list)), LTRIM(RTRIM(@vendor_id_fk)))", idrf_cnxn);
            new_doc_cmd.Parameters.AddWithValue("@doc_title", doc_title_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@doc_type_list", doc_type_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@doc_org_list", doc_org_list_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@doc_dept_list", doc_dept_list_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@doc_desc", doc_desc_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@prior_contract_cd", prior_contract_cd_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@legal_comp_contract_id", legal_comp_contract_id_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@doc_upld_dt", doc_upld_dt_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@doc_path", doc_path_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@crnt_doc_stat_list", crnt_doc_stat_list_text.Text);
            new_doc_cmd.Parameters.AddWithValue("@vendor_id_fk", vendor_id_fk_text.Text);

            idrf_cnxn.Open();
            new_doc_cmd.ExecuteNonQuery();
            idrf_cnxn.Close();

            if (IsPostBack)
            {
                Response.Redirect("~/Default.aspx");
            }
        }
    }

Any help would be greatly appreciated.

I'm using VS2013, framework is 4.5.1, this is an asp.net web forms application.

Thanks, J

Answer 1

So it should be somthing like this, if you read my prior comment:

int i = 0;
    string filename = fu_new_doc_vsn.FileName;
    if (fu_new_doc_vsn.HasFile)
    {
        while (System.IO.File.Exists(Server.MapPath("~/Data/") + filename))
        {
            i++;
            filename = fu_new_doc_vsn.Name + " (" + i.ToString() + ")" + Path.GetFileNameWithoutExtension(fu_new_doc_vsn.FileName);
        }
        fu_new_doc_vsn.PostedFile.SaveAs(Server.MapPath("~/Data/") + filename);
    }

Answer 2

Here's the code...

int i = 0;
        string filename = fu_new_doc_vsn.FileName;
        string fnnnoext = System.IO.Path.GetFileNameWithoutExtension(fu_new_doc_vsn.FileName);
        string fnnextonly = System.IO.Path.GetExtension(fu_new_doc_vsn.FileName);
        if (fu_new_doc_vsn.HasFile)
        {
            while (System.IO.File.Exists(Server.MapPath("~/Data/") + filename))
            {
                i++;
                filename = (fnnnoext + "(" + i.ToString() + ")" + fnnextonly);
            }
            fu_new_doc_vsn.PostedFile.SaveAs(Server.MapPath("~/Data/") + filename);
        }

        hdn_doc_path_text.Value = (Server.MapPath("~/Data/") + filename);