String Conversion datatime and calculation date difference in ASP. NET

The front-end code is as follows:

<% # Formatseetime (eval ("seetime") %>

 

The background code is as follows:

Protected string formatseetime (Object Caption) // format the display time of historical records.

{

Datetime d1 = datetime. parse (string. format ("{0: yyyy}-{0: mm}-{0: dd} {0: hh }:{ 0: mm}", caption ));

Datetime D2 = datetime. parse (string. format ("{0: yyyy}-{0: mm}-{0: dd} {0: hh }:{ 0: mm}", datetime. now ));

 

System. timespan Nd = D2-D1;

Int n = Nd. Days; // days difference

Int HN = Nd. hours; // Time Difference

 

If (N. tostring () = "0 ")

{Return "today" + hn. tostring () + "before ";}

Else

{Return N. tostring () + "day" + hn. tostring () + "before ";}

}