文件上传控件

 protected void Button1_Click(object sender, EventArgs e)
    {
        string[] flag = new string[2] { ".zip", ".rar"};
        if (FileUpload1.HasFile)
        {
            bool flag1 = false;
            foreach (string x in flag)
            {
                if (Path.GetExtension(FileUpload1.FileName).ToLower() == x)
                {
                    flag1 = true;
                    break;
                }
            }
            if (flag1)
            {
                string nam = DateTime.Now.ToString();
                nam = nam.Replace(":", "");
                nam = nam.Replace("-", "");
                nam = nam.Replace(" ", "");
                nam = nam + Path.GetExtension(FileUpload1.FileName);
                FileUpload1.SaveAs(MapPath("../down/" +nam));
                showmessagebox("上传成功");
                using (OleDbConnection conn = new OleDbConnection(cn))
                {
                    using (OleDbCommand cmd = new OleDbCommand("insert into down(subject,sb,nam,pa) values(@subject,@sb,@nam,@pa)", conn))
                    {
                        conn.Open();
                        cmd.Parameters.AddWithValue("@subject", TextBox2.Text.Trim());
                        cmd.Parameters.AddWithValue("@sb", content2.Value);
                        cmd.Parameters.AddWithValue("@nam", TextBox3.Text.Trim());
                        cmd.Parameters.AddWithValue("@pa", nam);
                        cmd.ExecuteNonQuery();
                    }
                }

 

            }
            else
            {
                showmessagebox("上传不成功");

            }
        }
        else
        {
            showmessagebox("请选择文件");
}

}