windows form application

Question

currently i am making GUI for my program. for this i need to read No. or integer or string (single word) from text file. I am using visual studio 2005 c++ CLI windows form application.
for reading text file i use streamreader.
there is an option for reading whole line(using readline) or whole file(using read to end).
can anyone tell me how to read specific no. or integer from each line of whole text file?
Thanking you in anticipation.

Sam Hobbs · Answer

The code I posted is for C++. It compiles using C++ and works. So can you please mark my reply as an answer? If you don't then I am likely to ignore your questions in the future.

Jignesh Patel · Answer

thanks very much ***** thanks very much ***** thanks very much ***** thanks very much ***** i think your code is for c# i need for cpp windows form application but i have got an some clue from your code which solve my problem and my code is as follow String^ s1 ; array ^s2; StreamReader^ reader = gcnew StreamReader(openFileDialog1->FileName); while(!reader->EndOfStream) {s1 = reader->ReadLine(); s2 = s1->Split(nullptr); for(int i=0;i Length;i++) textBox1->AppendText(s2[i]+ ); }

Sam Hobbs · Answer

I am still not sure what you need but I hope the following is close enough. This will process the third column of each record. It is a Console program but the code can be used in a form application also. You can use the console program to test the code if that is convenient. #include stdafx.h using namespace System; using namespace System::IO; using namespace System::Collections::Generic; int main(array ^args) { int i; String^ s; array ^ sa; StreamReader^ sr; try { sr = gcnew StreamReader(LData.txt); } catch (Exception^ ex) { Console::WriteLine(LOpen error: {0} ex); return 0; } while (!sr->EndOfStream) { s = sr->ReadLine(); sa = s->Split(nullptr); if (sa->Length >= 3) { if (Int32::TryParse(sa[2] i)) Console::WriteLine(i); else Console::WriteLine(Error from: {0} sa[2]); } } return 0; }

Jignesh Patel · Answer

I am sorry for that sam my data is as per following xyz data 3 2 4 3 2 Sr. No. name x1 x2 x3 .... 1 abc 13 42 53 .... 2 xaz 42 32 43 .... and so on now from this data i have to read column viz. 13 42 etc also i have to read specific no like 3 and 4 from second line i use visual studio 2005 cpp windows form application

Sam Hobbs · Answer

I have an answer for you but please be more specific about the format of the data. Is the integer the first number on the line? Is there nothing else such as spaces before the number? Is there always a space or an end-of-line after the integer? It is very frustrating for me when I answer a question and then the person says my answer is wrong and then the person I am trying to help tells me something they should have told me originally. If I post sample code that does what I understand you need then please don't tell me it is wrong if there is something you did not tell me about what you need.

Jignesh Patel · Answer

Thanks Sam for reply Data is in column form in text document. I want to read integer from each row.

Jignesh Patel · Answer

Thanks villi But i know this one. can u tell me how to read single word or integer from line? or from whole file?

Sam Hobbs · Answer

What is the format of the data? Is there just one record in the file and is the number the only thing in the record? Unless the answer is no to both of those questions we need to know the format of the data.

Kirtan Patel · Answer

villi he needs code in Visual C++ not in c# :)

villi · Answer

To read file to the end of file u can use this:-> class class1{ static void main(string[] args) { streamreader sr =new streamreader(filename.txt); console.writeline(sr.readtoend()); sr.close(); } } To Line by Line file Reading:-> S=new filestream(filename.txtfilemode.open); streamreader r= new streamreader(s); string t; while((t=r.readline()) != null) { console.writeline(t); } try this code:-> If i cant understand your problem then sorry i m just try to help u ok otherwise this code is helpful to u.