テキストファイルを読み込んで行単位で処理する

Question

テキストファイルがあります。私のプログラムでは次のようにします：

1 - 行数とファイルパスを表示します。

各行に2ループ。

var lines = File.ReadLines(@"C:\\test.txt");     

編集（回答）

public static string[] local_file; // make a string array to load the file into it 
int i = 0; // index of lines 
    try 
    { 
     OpenFileDialog op = new OpenFileDialog // use OpenFileDialog to choose your file 
     { 
      Filter = "Combos file (*.txt)|*.txt" ;// select only text files 
     } 
     if (op.ShowDialog() == DialogResult.OK) 
     { 

      local_file= File.ReadAllLines(op.FileName);// load all the contents of the file into the array 

      string count = "lines = " + Convert.ToString(local_file.Length); // number of lines 

      string file_name = op.FileName; // show the file name including the path 
     } 
     for (i; i < local_file.Length; i++)// loop through each line 
      { 
      // do something here remember to use local_file[i] for the lines 
      } 

    }catch (Exception exception) 
    { 
     MessageBox.Show(exception.Message); 
    } 

Answer 1

public static string[] local_file; // make a string array to load the file into it 
int i = 0; // index of lines 
try 
     { 
      OpenFileDialog op = new OpenFileDialog // use OpenFileDialog to choose your file 
      { 
       Filter = "Combos file (*.txt)|*.txt" ;// select only text files 
      } 
      if (op.ShowDialog() == DialogResult.OK) 
      { 

       local_file= File.ReadAllLines(op.FileName);// load all the contents of the file into the array 

       string count = "lines = " + Convert.ToString(local_file.Length); // number of lines 

       string file_name = op.FileName; // show the file name including the path 
      } 
      for (i; i < local_file.Length; i++)// loop through each line 
       { 
       // do something here remember to use local_file[i] for the lines 
       } 

     }catch (Exception exception) 
     { 
      MessageBox.Show(exception.Message); 
     } 

Answer 2

は次のようになります。

 string[] lines = File.ReadAllLines("....."); 
     foreach (string line in lines) 
     { 
      if (line.StartsWith("....")) 
      { 
      } 
     } 

Answer 3

あなたはLINQでそれをすべて行うことができます。

var parts = File.ReadLines(@"C:\test.txt") // No need to escape backslash here since you're using a verbatim string 
    .Select(line => line.Split(':')) 
    .FirstOrDefault(p => p.Length == 2 && p[0] == "ali"); 

if (parts != null) 
{ 
    textBox1.Text = parts[0]; 
    textBox2.Text = parts[1]; 
} 

Answer 4

メイクを名前aliを含む行をフィルタリングすることで簡単です。 lines.countが0以上

var lines = File.ReadLines(@"C:\Test.txt").Where(l => l.Contains("ali"));