using System;

 using System.Collections;

 using System.Text;

 using System.Windows.Forms;

 namespace profviewer

 {

     class LIStringComparator : IComparer

     {

         private int m_col;

         public LIStringComparator(int col)

         {

             m_col = col;

         }

         public int Compare(object x, object y)

         {

             ListViewItem a = (ListViewItem)x;

             ListViewItem b = (ListViewItem)y;

             return String.Compare(a.SubItems[m_col].Text, b.SubItems[m_col].Text);

         }

     }

     class LIIntComparator : IComparer

     {

         private int m_col;

         public LIIntComparator(int col)

         {

             m_col = col;

         }

         public int Compare(object x, object y)

         {

             ListViewItem a = (ListViewItem)x;

             ListViewItem b = (ListViewItem)y;

             int num1 = Int32.Parse(a.SubItems[m_col].Text);

             int num2 = Int32.Parse(b.SubItems[m_col].Text);

             if (num1 > num2)

             {

                 return -1;

             }

             else if (num1 < num2)

             {

                 return 1;

             }

             return 0;

         }

     }

     class LIDoubleComparator : IComparer

     {

         private int m_col;

         public LIDoubleComparator(int col)

         {

             m_col = col;

         }

         public int Compare(object x, object y)

         {

             ListViewItem a = (ListViewItem)x;

             ListViewItem b = (ListViewItem)y;

             double num1 = Double.Parse(a.SubItems[m_col].Text);

             double num2 = Double.Parse(b.SubItems[m_col].Text);

             if (num1 > num2)

             {

                 return -1;

             }

             else if (num1 < num2)

             {

                 return 1;

             }

             return 0;

         }

     }

 }