Parsing Tab delimited text files

Question

I have a tab delimited file with some columns and rows for example: some rows might not have value for some columns. What we know is that the \"order\" doe

Answer 1

Try following approach

static void Main(string[] args)
{
    DataTable datatable = new DataTable();
    StreamReader streamreader = new StreamReader(@"C:\Temp\txt.txt");
    char[] delimiter = new char[] { '\t' };
    string[] columnheaders = streamreader.ReadLine().Split(delimiter);
    foreach (string columnheader in columnheaders)
    {
        datatable.Columns.Add(columnheader); // I've added the column headers here.
    }

    while (streamreader.Peek() > 0)
    {
        DataRow datarow = datatable.NewRow();
        datarow.ItemArray = streamreader.ReadLine().Split(delimiter);
        datatable.Rows.Add(datarow);
    }

    foreach (DataRow row in datatable.Rows)
    {
        Console.WriteLine(""----Row No: " + datatable.Rows.IndexOf(row) + "----"");

        foreach (DataColumn column in datatable.Columns)
        {
            //check what columns you need
            if (column.ColumnName == "Column2" || 
                column.ColumnName == "Column12" ||
                column.ColumnName == "Column45") 
            {
                Console.Write(column.ColumnName);
                Console.Write(" ");
                Console.WriteLine(row[column]);
            }
        }
    }
    Console.ReadLine();
}