数据连续插入 table

Question

我尝试在 table 中发送数据，当时间超过 5 mint 数据插入成功但数据插入多次我只想提交数据一次即只有一行只插入 1 次

这就是我的尝试

  if (timediff.TotalMinutes > 5)
                {
                 DataClasses1DataContext db = new DataClasses1DataContext();
                    var  u = db.tbl_urgent_contacts;
                    foreach (var a in u)
                    {
                        tbl_OutBox tb = new tbl_OutBox();
                        tb.FromSIM_No = a.SimNo;
                        tb.ToSIM_No = a.SimNo;                                   
                        tb.ToText = "Check abc";
                        tb.Reply = "NA";
                        tb.Response = "NA";
                        tb.RegNo = "NA";
                        tb.Datetd = DateTime.Now;
                        tb.FFID = "NA";
                        tb.UserId = "You";
                        tb.FromText = "Check abc";
                        db.tbl_OutBoxes.InsertOnSubmit(tb);
                        db.SubmitChanges();
                    } 
                }

Answer 1

修改这条语句：如果 (timediff.TotalMinutes > 5) 到：如果（timediff.TotalMinutes == 5）

希望对你有用

数据连续插入 table

data continuously inserted in table

c#

linq

console-application