Why isn't my file being read in C#? -

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i'm not sure why file isn't being read in c# program. when run it, gives 0 in textbox , doesn't list names. wonder if problem else , reading file correctly. in advance everyone!

here customerda class calls file , i'm not sure if correct:

using system; using system.collections.generic; using system.linq; using system.text; using system.threading.tasks; using system.io;   namespace customerlist { public static class customerda {     private const string dir = @"z:\desktop\windows 7 files\c#.net\customerlist\customerlist";     private const string path = dir + "customerdat.txt";      public static list<customer> getallcustomers()     {         if (!directory.exists(dir))             directory.createdirectory(dir);          streamreader textin =             new streamreader(                 new filestream(path, filemode.open, fileaccess.read));          list<customer> custlist = new list<customer>(); // create list add customers to.         while (textin.peek() != -1)         {             string row = textin.readline();             string[] columns = row.split(',');             customer customer = new customer();             customer.name = columns[0];             customer.email = columns[1];             customer.creditrating = convert.toint16(columns[2]);             customer.city = columns[3];             customer.zip = columns[4];         }          textin.close();          // use method read found in book example on page 677         // file read can found on moodle customerdat.txt         // placed copy in project.           //once of customers have been read list return list         return custlist;     } } }

here form1.cs, i'm not sure if calling correctly or not. seems correct me:

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms;  namespace customerlist { public partial class form1 : form {     public form1()     {         initializecomponent();     }      list<customer> ourcustomers = new list<customer>();      private void form1_load(object sender, eventargs e)     {         // call customerda class , read of customers file , return list here         ourcustomers = customerda.getallcustomers();     }      private void btnshowgood_click(object sender, eventargs e)     {         int numgoodcustomers = 0;          // loop through of customers returned file         foreach (customer cust in ourcustomers)         {             // see if customer has rating > 8             if(cust.creditrating > 8)             {                 // add name listbox                 lstgoodcustomers.items.add(cust.name);                 // add 1 count of customers                 numgoodcustomers ++;              }          }          // update form number of customers         txtnumgoodcustomers.text = numgoodcustomers.tostring();     } } }

you never add list while reading, empty. add custlist.add(customer) end of loop.

private const string dir = @"z:\desktop\windows 7 files\c#.net\customerlist\customerlist"; private const string path = path.combine(dir, "customerdat.txt");  list<customer> custlist = new list<customer>(); // create list add customers to. while (textin.peek() != -1) {    string row = textin.readline();    string[] columns = row.split(',');    customer customer = new customer();    customer.name = columns[0];    customer.email = columns[1];    customer.creditrating = convert.toint16(columns[2]);    customer.city = columns[3];    customer.zip = columns[4];    custlist.add(customer); //this missing }

as @gusman noted (added answer completeness) need use path.combine instead of '+' well, path invalid is.


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