public class Ac_Contact
    {
        public string strconn = System.Configuration.ConfigurationManager.AppSettings["DataBase"].ToString();
        public int  Contact_Insert(Contact tact)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("insert into Message(Country,Com_Name,Website,Com_Address,Title,Con_Name,Tel,Email,Message,Busi_Type) ");
            sb.Append("values(");
            sb.Append("'" + tact.Country + "',");
            sb.Append("'" + tact.CompanyName + "',");
            sb.Append("'" + tact.Website + "',");
            sb.Append("'" + tact.CompanyAddress + "',");
            sb.Append("'" + tact.Title + "',");
            sb.Append("'" + tact.ContactName + "',");
            sb.Append("'" + tact.Tel + "',");
            sb.Append("'" + tact.Email + "',");
            sb.Append("'" + tact.Message + "',");
            sb.Append("'')");

            SqlConnection conn = new SqlConnection(strconn);
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandText = sb.ToString();
            conn.Open();
            int i = cmd.ExecuteNonQuery();

            conn.Close();