使用sql批量数据类型转换的问题 [英] problem in using sql bulk dataypes convertion

问题描述

DataTable dt = new DataTable();

                        dt.Columns.Add("L_DateTime");
                        dt.Columns.Add("L_Direction");
                        dt.Columns.Add("L_CardID");
                        dt.Columns.Add("L_GateID");

                        int i2 = 0;
                        while ((inputLine = rdr.ReadLine()) != null) //Read while                          
                                                 //the line is not null
                        {
                            string[] arr;
                            arr = inputLine.Split('',''); //splitting the line which
   
                           //was read by the stream reader object

                            row = dt.NewRow();
                            row["L_DateTime"] = Convert.ToDateTime(arr[0]);
                            row["L_Direction"] = arr[1];
                            row["L_CardID"] = arr[2];
                            row["L_GateID"] = Convert.ToInt32(arr[3]);

                            dt.Rows.Add(row);
                            i2++;
                        }

                        sqlbulkCopy.WriteToServer(dt);
                        sqlbulkCopy.Close();

问候大家...我在这里有问题...
让我解释一下这段代码的全部含义...

即时通讯使用sqlbulk从文本文件读取数据，并将其存储在数据库中.据即时通讯在文本文件中，数据都被视为字符串(也许)！..

在我的数据库的前面，我创建了名称与此代码完全相同的行..

首先在我的sql dbase中，我将所有数据都视为字符串..并且工作正常..
但是由于涉及日期时间...我将其更改为合适的类型...
和我努力得到错误...说:不能被识别为有效的日期时间!!!
我不明白...我已经将其转换为日期时间...任何建议都将是不错的....对于所有编码人员都如此！

Greeting everyone...i have problem here...
let me explain a little bit what this code is all about...

im using sqlbulk to read data from text file, and store it in database. As far as im aware in text file, the data all treated as string(perhaps)!..

earlier in my database i have created rows which name are exactly as in this code..

first in my sql dbase, im treated all data as string..and it is working fine..
but since it involving datetime...i change it to suitable type...
and i strting to get error...said :STRING WAS NOT RECOGNIZED AS A VALID DATETIME!!!
i dont understand...i have already converted it to datetime...any suggestion would be nice....regards to all coders!!

推荐答案

我相信您正在检索的L_DateTime的格式对于DateTime无效.使用DateTime.TryParse方法而不是直接转换值，或者使用.ToString()将其另存为string格式.

问候，
爱德华(Eduard)

I believe the format of L_DateTime you are retrieving is not valid for DateTime. Use DateTime.TryParse method instead of directly converting the values or, save it as string format by using .ToString().

Regards,
Eduard

代替Convert.ToDateTime使用DateTime.TryParse.
在这种情况下，如果输入的日期时间无效，则不会收到此错误.

要了解有关DateTime.TryParse方法的更多信息，请通过此处 [ ^ ].

Instead of Convert.ToDateTime use DateTime.TryParse.
In this case, if your input is not a valid date time, you will not get this error.

To know more about the DateTime.TryParse method, go through here[^].

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