Fix some formatting stuffs

TableConsolePrint.cs

using System.Data;

namespace MyExtensions
{
  public static class DataTableExtensions
  {
    public static void PrintToConsoleAligned(this DataTable dt)
    {
        if (dt == null) return;

        // 1. Calculate maximum column widths
        var columnWidths = dt.Columns.Cast<DataColumn>()
                             .Select(col => 
                                Math.Max(col.ColumnName.Length, dt.AsEnumerable()
                                  .Select(row => row[col].ToString() ?? "")  // get non-null
                                  .Max(str => str.Length)))                  // find the longest
                                .ToList();                                   // make column list

        // 2. Print the header row
        for (int i = 0; i < dt.Columns.Count; i++)
        {
          Console.Write(dt.Columns[i].ColumnName.PadRight(columnWidths[i] + 2)); // Add 2 for spacing
        }
        Console.WriteLine();
        Console.WriteLine(new string('-', columnWidths.Sum() + (columnWidths.Count * 2)));

        // 3. Print the data rows
        foreach (DataRow row in dt.Rows)
        {
          for (int i = 0; i < dt.Columns.Count; i++)
          {
             string x = row[i].ToString() ?? "";
             // Align left using PadRight
             Console.Write(x.PadRight(columnWidths[i] + 2));
          }
          Console.WriteLine();
        }
    }
  }
}