help me in this program

[Nettai]

i am new to c#.net...i am having 90 text files having image intensity values...i am reading n th row of every text file and write it into newly created text file....i have done this in matlab .i am getting correct output...but in this program i have done something wrong...because of that the no.of columns are not same in each row...i couldn't get the output image....here is the program

private void button1_Click(object sender, EventArgs e)
{

       try
        {
            
            string path1="c:\\\\Vicky\\\\DATAS\\\\OutputFiles";
            string path2 = "\\\\";
            string path4 = ".txt";
            DirectoryInfo dir1 = new DirectoryInfo(path1);
            dir1.Create();
                                         
            DirectoryInfo Dir = new DirectoryInfo(@"C:\\Vicky\\DATAS\\textfiles");
            FileInfo\[\] FileList = Dir.GetFiles("c\*.txt",SearchOption.AllDirectories);
            for(int t=1;t<280;t++)
            {
               string path3=Convert.ToString(t);
               string path=path1+path2+path3+path4;
               
               FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write);
               StreamWriter sw = new StreamWriter(fs);
               

            foreach (FileInfo FI in FileList)
            {
                FileStream fs1 = FI.OpenRead();
                StreamReader sr = new StreamReader(fs1);
                int i = 1;

                while (sr.ReadLine() != null)
                {
                    string d="";                      
                   
                        if (t == i)
                        {
                                

                                d = sr.ReadLine();
                                sw.WriteLine(d);
                                break;
                            
                        }
                      i++;
                    
                }

              }

           
        }
            //fs.Close();
            //sw.Close();
    }

[Xmen Real]

you're writing 279 same files...plus

if (t == i)
{

                                d = sr.ReadLine();
                                sw.WriteLine(d);
                                break;
                            
                        }

this will break in every first while loop File.Copy() can do what you need

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[Nettai]

thanks for ur reply....i don't know how file.copy() method is going to help in this program.here i am not copying the file to another path...i am just reading the the same row of every text file and copy it into new file..and u told me that this program will write 279 same files...but i am getting 279 different text files with different memory sizes....

[dan sh]

Take a look at File.ReadAllLines method. Now since you know the line number to read, just get that from the array returned. Then once you have read all the files, then write everything to the file in one go. This can be done using in built methods in File class. Also, when you reply to anyone, use reply link in that very post and not your own.

जय हिंद

[Xmen Real]

nettai wrote:

..but i am getting 279 different text files with different memory sizes....

yes, if you dont mind then your code is very tacky. All you need to do is that read all lines from each text file using File.ReadAllLines() as Danish said. That will return string[] and you can rip the line by index then add to the generic string list List. When you done, write entire list using File.WriteAllLines()(you will need to use ToArray() to get the array from list).

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