C#实现对二维数组排序的方法

本文实例讲述了c#实现对二维数组排序的方法。分享给大家供大家参考。具体实现方法如下：

/// <summary>
/// a generic routine to sort a two dimensional array of a specified type based on the specified column.
/// </summary>
/// <param name="array">the array to sort.</param>
/// <param name="sortcol">the index of the column to sort.</param>
/// <param name="order">specify "desc" or "descending" for a descending sort otherwise
/// leave blank or specify "asc" or "ascending".</param>
/// <remarks>the original array is sorted in place.</remarks>
/// <see cref="http://*.com/questions/232395/how-do-i-sort-a-two-dimensional-array-in-c"/>
private static void sort<t>(t[,] array, int sortcol, string order)
{
  int colcount = array.getlength(1), rowcount = array.getlength(0);
  if (sortcol >= colcount || sortcol < 0)
    throw new system.argumentoutofrangeexception("sortcol", "the column to sort on must be contained within the array bounds.");
  datatable dt = new datatable();
  // name the columns with the second dimension index values, e.g., "0", "1", etc.
  for (int col = 0; col < colcount; col++)
  {
    datacolumn dc = new datacolumn(col.tostring(), typeof(t));
    dt.columns.add(dc);
  }
  // load data into the data table:
  for (int rowindex = 0; rowindex < rowcount; rowindex++)
  {
    datarow rowdata = dt.newrow();
    for (int col = 0; col < colcount; col++)
      rowdata[col] = array[rowindex, col];
    dt.rows.add(rowdata);
  }
  // sort by using the column index = name + an optional order:
  datarow[] rows = dt.select("", sortcol.tostring() + " " + order);
  for (int row = 0; row <= rows.getupperbound(0); row++)
  {
    datarow dr = rows[row];
    for (int col = 0; col < colcount; col++)
    {
      array[row, col] = (t)dr[col];
    }
  }
  dt.dispose();
}

希望本文所述对大家的c#程序设计有所帮助。