在C＃中读取文本文件中的不同块

Question

I'm building a forms app in visual c#. My problem is that I need to read all the columns underlined in Red (shown in picture ) and skip the columns which are in blue:

I dont know if I should use readline or readblock method. Also, how would the program know when a red column ends and how to go to the next red column. Will I have to use character counts?

This is my current code:

  private void button1_Click(object sender, EventArgs e)
    {
        OpenFileDialog ofd = new OpenFileDialog();
        if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            StreamReader sr = new StreamReader(File.OpenRead(ofd.FileName));
            // constructor sr accesses streamreader class. In stream reader class we access method read to end
            textBox1.Text = sr.ReadToEnd();
            // fill textbox with this.
            sr.Dispose();

        }
    }

I'm sorry for the vaugeness, I'm a beginner - really appreciate the help.

Answer 1

It looks like two very simple rules could help with these files:

1) Rows with a character in the first column (not space) kick you out of table mode.

2) Rows with groups of equal and space and nothing else in them start table mode.
a) column width defined by width of equal sign section
b) previous row usually gives column names

Using that you could create a general parser for this form of file. Just read a line at a time and apply the rules for entering leaving table against each line you read. (Keep one-back if you want header names)

EDIT: Added a code sample. (problem is by the "first line" the whole program is mostly written)

using( StreamReader input = new StreamReader("somefile.txt") )
{
   List<int> bounds = new List<int>();
   for( string line = input.ReadLine(); line != null; line = input.ReadLine() )
   {
      if( line.Length > 0 && line[0] == '-' )
         bounds.Clear();
      if( Regex.IsMatch(line, "^ *=[ =]*$") ) // This is a column header
      {
         bounds.Clear();
         for( int i = 1; i<line.Length; ++i )
            if( line[i - 1] != line[i] )
               bounds.Add(i);
      }
      else if( bounds.Count > 0 )
      {
         List<string> cells = new List<string>();
         string padLine = line.PadRight(bounds[bounds.Count-1]);
         for( int i=0; i<bounds.Count; i += 2 )
            cells.Insert(i / 2, padLine.Substring(bounds[i], bounds[i+1]));
         // retrieve data cells[7] (column 7) here and store elsewhere.  
      }
   }
}