how to change the date time in a text file with todays date

Question

I have a json file. In that file, I have to replace the date and time with today's date and time. How can I do this? This is my file data. In this data i have to replace '2017-01-8--15-59-10' into today's data. again tomorrow I have to replace that data with tomorrow's date.

i tried this but it is not working

var newFName = Regex.Replace(str, DateTime.Today.ToString("yyyy'-'MM'-'dd' 'HH':'mm':'ss"), DateTime.Today("yyyy'-'MM'-'dd' 'HH':'mm':'ss"));

this is my data which i want to edit

string data=@"where POSBill.CreatedOn between 2017-01-8--15-59-10 and @addedtimestamp order by POSBill.CreatedOn limit 2000"

Answer 1

您可以在工作表开始时保存（或者如果您愿意，可以结束），

在下一个作业运行中，您可以从此表中获取数据。

Answer 2

由于您的数据字符串似乎表示已使用查询参数（@addedtimestamp）的数据库查询，因此您只需添加另一个传递所需值的查询参数：

string data = @"where POSBill.CreatedOn between @today and @addedtimestamp order by POSBill.CreatedOn limit 2000"

...使用查询字符串时，只需为现有参数@addedtimestamp提供此参数的值<{1}}

command.Parameters.AddWithValue("@today", DateTime.Today);

这将提供您想要的动态行为，并为您提供复杂的字符串替换。