(in this example the premise condition that every three line TXT file is a set of data, respectively is a blank line, time, target data, the request is to remove the time with a blank line)
Contain space:

 using System; 
Using System. Collections. Generic; 
Using System.Com ponentModel; 
Using System. The Data; 
Using System. Drawing; 
using System.Linq; 
Using System. The Text; 
Using System. The Threading. The Tasks; 
Using System. Windows. Forms; 
using System.IO; 

We need to know before operation data in TXT file TXT file number of rows,

 double lines=0; 
Using var (sr=new StreamReader (@ "E: \ nyy TXT")) 
{
Var ls=""; 
While ((ls=sr. ReadLine ())!=null) 
{
Lines++; 
} 
} 

Read specify the location of the TXT file after delete specified data generated a new TXT file, the original TXT file is changeless,
In order to prevent the calculation of small and medium-sized trade-off problem (index beyond the scope, the specific situation to analysis) using the try and catch statement, (0, pay attention to the initial behavior and we count 1 row index is 0)

 double b=lines/3;//a total of how many sets of data 
List LineDat=new List (File. ReadAllLines (@ "E: \ nyy TXT")); 
Try 
{
For (int x=0; X & lt; b; X +=1) 
{
LineDat. RemoveAt (1 + x * 3) (int).//the second line from the first delete 
} 
File. WriteAllLines (@ "E: \ nyy11 TXT", lineDat. ToArray ());//save data 
} 
Catch 
{
File. WriteAllLines (@ "E: \ nyy11 TXT", lineDat. ToArray ());//save data 
} 

Delete empty line up,

CodePudding user response:

This is a popular science algorithm?