c# CSV text file to single string (or array or list ) then add to or alter each string and output to single string variable -

i using c# datagridview multiple rows (which may vary based on user input ) export plain text file result :

compname,poweron,thin,storage,acceptlic,verify,ssl,c:\test\myfile.img,root,p@ssw0rd,192.168.1.100 compname,poweron,thin,storage,acceptlic,verify,ssl,c:\test\myfile.img,root,p@ssw0rd,192.168.1.100 compname,poweron,thin,storage,acceptlic,verify,ssl,c:\test\myfile.img,root,p@ssw0rd,192.168.1.100  //...and more lines if user adds more 

what parse file , load each line single variable append command line executable example:

"c:\program files\mytest\mytest tool\mytest.exe" -n=compname --poweron -dmode=convert -volume=storage1 --acceptlicense --noverification --ssl c:\users\me\documents\down\myfile.img system1://root:mypassword@192.168.1.151 

so question how done ?

i have checked many examples , it's starting rather confusing method use produce required result. (streamreader, stringsplit,stringjoin , more..)

i able contents of file build list using :

list<string> list = new list<string>();         using (streamreader reader = new streamreader(@"c:\foo\stest.txt"))         {             string line;             while ((line = reader.readline()) != null)             {                 list.add(line); // add list.                 console.writeline(line); // write console.                 stringbuilder builder = new stringbuilder();          //but here ?               } 

am on right track ? appreciate answrs ..

thank kindly

i write messy logic here you, please check , correct if assumptions wrong.

 list<string> list = new list<string>();         using (streamreader reader = new streamreader(@"c:\projects\consoleapplication1\consoleapplication1\bin\debug\txt1.txt"))         {             string line;             string[] parameters =  null;             while ((line = reader.readline()) != null)             {                 list.add(line); // add list.                 console.writeline(line); // write console.                 stringbuilder builder = new stringbuilder();                   parameters = line.split(',');                  builder.append("-n=");                 int paramcount = 0;                 foreach (var param in parameters)                 {                     if (paramcount == 0)                     {                         builder.append(param + " ");                     }                     else if (paramcount == 2)                     {                         // req seems need static parameter here                         // if assumption wrong, correct logic                         builder.append(string.format("-dmode=convert "));                     }                     else if (paramcount == 3)                     {                         // req seems need static parameter here                         // if assumption wrong, correct logic                         builder.append(string.format("-volume=storage1 "));                     }                     else if(paramcount <= 5 )                     {                         builder.append(string.format("--{0} ", param));                     }                     else if (paramcount > 5)                     {                         //correct logic per requirement.                                                     string sslparams = " --" + param + " ";                         string[] sslparamvalues = parameters.take(11).skip(7).toarray();                          sslparams +=   string.join(",", sslparamvalues);                         builder.append(string.format("--{0} ", sslparams));                     }                     paramcount++;                 }                 console.writeline(builder.tostring());                  process p = new process();                 p.startinfo.filename = @"c:\program files\mytest\mytest tool\mytest.exe";                 p.startinfo.arguments = string.format(builder.tostring());                  //p.start();