public void InsertInquiry(BalInquiry obj)
 {
     query = "insert into Inquiry(CityId,InquiryContent,InquiryDate,KeywordId,ContactName,Mobile,Email) values (" + obj.CityId + ",'" + obj.InquiryContent + "','" + obj.InquiryDate + "'," + obj.KeywordID + ",'" + obj.ContactName + "','" + obj.Mobile + "','" + obj.Email + "')";
     SqlCommand cmd=new SqlCommand(query,con);
     con.Open();
     cmd.ExecuteNonQuery();
     con.Close();
 }
    public void UpdateInquiry(BalInquiry obj)
    {
        query="update Inquiry set CityId="+obj.CityId+",InquiryContent='"+obj.InquiryContent+"',InquiryDate='"+obj.InquiryDate+"',KeywordId="+obj.KeywordID+",ContactName='"+obj.ContactName+"',Mobile='"+obj.Mobile+"',Email='"+obj.Email+" where InquiryId="+obj.InquiryId ;
        SqlCommand cmd = new SqlCommand(query,con);

        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }
    public void DeleteInquiry(BalInquiry obj)
    {
        query = "delete from Inquiry where InquiryId="+obj.InquiryId;
        SqlCommand cmd = new SqlCommand(query,con);

        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }