write back to first line of csv in c# -

so want write values csv file in 3 columns follows:

number of series      firstval       secondval 10                    23             33 50                    55             66 100                   98             102 

i stores myvalues in dictionary

var timeresults = new dictionary<string, dictionary<string, double>>(); 

and mycode this:

 foreach (var resultset in timeresults)      {      var csv = new stringbuilder();       csv.appendline(string.format("number of timeseries;{0}", n));      foreach (var result in resultset.value)        {         csv.appendline(string.format("{0}.{1} (ms);{2}", resultset.key, result.key, result.value));         }       file.appendalltext(@"d:/csv/results_" + resultset.key + ".csv", csv.tostring());  } 

but this:

number of timeseries        10 add.firstval(ms)            74 add.secondval (ms)          12 number of timeseries        50 add.firstval (ms)           4 add.secondval(ms)           3 number of timeseries        100 add.firstval (ms)           6 add.secondval (ms)          6 

all want tell go first line next column , write again. values in 1 column. how possible?

writing , reading cvs files not simple task itself. better use libraris csvhelper , a fast csv reader

also, dictionary not guarantee order in records. might problem you. consider using list instead or sort records criteria.

so, code this

        stream = new memorystream();         writer = new streamwriter(stream);         csvwriter = new csvwriter(writer);                     csvwriter.configuration.quoteallfields = false;         csvwriter.configuration.hasheaderrecord = true;         csvwriter.writefield("number of timeseries");         csvwriter.writefield("add.firstval(ms)");         csvwriter.writefield("add.secondval (ms)");         csvwriter.nextrecord();         foreach (var resultset in timeresults)         {            csvwriter.writefield(resultset.key);            foreach (var result in resultset.value)            {                csvwriter.writefield(result.key);               csvwriter.writefield(result.value));              }                csvwriter.nextrecord();          }         writer.flush();        // need data in stream.        // dispose objects.