command line - C# Reading Paths From Text File Says Path Doesn't Exist -

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• what's fastest way read text file line-by-line? 9 answers

i'm developing small command line utility remove files directory. user has option specify path @ command line or have paths being read text file.

here sample text input:

c:\users\mrrobot\desktop\delete c:\users\mrrobot\desktop\erase c:\users\mrrobot\desktop\test 

my code:

class program     {         public static void main(string[] args)         {              console.writeline("number of command line parameters = {0}", args.length);              if(args[0] == "-tpath:"){                      clearpath(args[1]);             }             else                 if(args[0] == "-treadtxt:"){                      readfromtext(args[1]);                 }          }          public static void clearpath(string path)         {             if(directory.exists(path)){                  int directorycount = directory.getdirectories(path).length;                  if(directorycount > 0){                      directoryinfo di = new directoryinfo(path);                      foreach (directoryinfo dir in di.getdirectories())                     {                         dir.delete(true);                      }                  }                 else{                      console.writeline("no subdirectories remove");                 }                  int filecount = directory.getfiles(path).length;                  if(filecount > 0){                      system.io.directoryinfo di = new directoryinfo(path);                      foreach (fileinfo file in di.getfiles())                     {                             file.delete();                      }                   }                 else{                      console.writeline("no files remove");                 }                  }             else{                  console.writeline("path doesn't exist {0}", path);             }         }          public static void readfromtext(string pathtotext)         {                 try                 {   // open text file using stream reader.                     using (streamreader sr = new streamreader(pathtotext))                     {                         // read stream string, , write string console.                         string line = sr.readtoend();                         clearpath(line);                     }                 }                 catch (exception e)                 {                     console.writeline("the file not read:");                     console.writeline(e.message);                 }          }      } } 

my problem:

when reading text file, says first path doesn't exist, , prints paths prompt, despite have no console.writeline(). however, if plug these same paths , call -tpath: work. issue seems in readfromtext() can't seem figure out.

this problem:

string line = sr.readtoend(); 

that isn't reading line of data - it's reading whole file in 1 go. clearpath method expects parameter single path, not bunch of lines glued together. reason you're seeing paths clearpath being called (with in 1 call), "glued together" path isn't being found, , it's printing out input in console.writeline("path doesn't exist {0}", path);.

i suspect should use like:

var lines = file.readalllines(pathtotext); foreach (var line in lines) {     clearpath(pathtotext); }