c# - Picking specific numbers out of text file and assign to variable -

someone here @ works needs calculations done numbers within text file. know how calculation haven't worked text file before. spent night reading , wrote little first number needed doesn't work.

so here example of file.

so first number comes after fsd: 0.264 need read number , save variable. number different per file. need first 3.4572 number read variable. , last number of column don't see here example can last 1 shown in image of 3.3852 read , saved variable.

maybe i'm making harder needs playing around with

public partial class frmtraveltime : form {     string file = "";     public frmtraveltime()     {         initializecomponent();     }      private void button1_click(object sender, eventargs e)     {         dialogresult result = openfiledialog1.showdialog();         if (result == dialogresult.ok)         {             file = openfiledialog1.filename;         }     }      private void button2_click(object sender, eventargs e)     {         var slines = file.readalllines(file)         .where(s => !s.startswith("fsd:"))         .where(s => !string.isnullorwhitespace(s))         .select(s => new         {             svalue = regex.match(s, "(?<=s)[\\d.]*").value,         })     .toarray();          string value = "";          (int = 0; < slines.length; i++)         {             if (slines[i].svalue == "")             {                 value = (slines[i].svalue);             }         }     } } 

edit @ramankingdom

so if see here lines have ending column of 0.00 until 3.0164 7793 1 0 0.159 0.02

so i'd do, edit did skip has column 0.00 in last column , make first non 0.00 info.firstvalue in case 3.0164

now tried on own , used var data = lines.where(line => (!line.contains(data_start_point_identifier) && !line.contains(fsd__line_identifier) && !line.endswith("0.00"))).tolist();

but breaks info.startvalue , data = datawithavgvolts[datawithavgvolts.count - 1].split(splitter);

so i'd figured i'd check you. tried keep getting invalid data error on info.startvalue

fileinfo info = new fileinfo();  var lines = file.readalllines(row.cells["colfilelocation"].value.tostring());                 var fsdline = lines.firstordefault(line =>  line.contains(fsd__line_identifier));                 info.fsd = fsdline.substring(fsdline.indexof(fsd_identifier) + fsd_identifier.length, 7);                 var datawithavgvolts = lines.skipwhile(line => !line.contains(data_start_point_identifier)).tolist();   int index =1;              while(index < datawithavgvolts.count())  {     var data = datawithavgvolts[index].split(splitter);   if(data.count() >1)    {     if(!convert.todouble(data[data.count()-1]) == 0)     {      //set start info       break;    }   }  index++; } 

the reverse loop can run set end value

here code

class program {     const string fsd_identifier = "fsd:";     const string fsd__line_identifier = "drilling data";      const string data_start_point_identifier = "avg_volts";     static readonly char[] splitter = {' ','\t'};     static void main(string[] args)     {         var result =  getfileinfo("c:\\sample.txt");     }      private static myfileinfo getfileinfo(string path)     {         myfileinfo info = new myfileinfo();         try         {             var lines = file.readalllines(path);             var fsdline  = lines.firstordefault(line => line.contains(fsd__line_identifier));             info.fsd =  fsdline.substring(fsdline.indexof(fsd_identifier) + fsd_identifier.length, 10); // take lenght can specify or own logic             var datawithavgvolts = lines.skipwhile(line => !line.contains(data_start_point_identifier)).tolist<string>();                  if (datawithavgvolts.count() > 1)                 {                     var data  =  datawithavgvolts[1].split(splitter);                     info.startvalue = convert.todouble(data[0]);                     data = datawithavgvolts[datawithavgvolts.count-1].split(splitter);                     info.endvalue = convert.todouble(data[0]);                 }         }         catch (exception ex)         {             //logging here         }          return info;     } }  public class myfileinfo {     public string fsd;     public double startvalue;     public double endvalue; }