C# listview Click on the column header to sort instance

Updated: January 25, 2017 08:48:00 Submission: jingxian

Below, the editor will bring you an example of clicking on the column header sorting in C# listview. The editor thinks it is quite good, so I will share it with you now and give you a reference. Let's take a look with the editor

Examples are as follows:

#region Custom variables  int currentCol = -1;
  bool sort;
  #endregion//Column header click event
private void lvw_ColumnClick(object sender, ColumnClickEventArgs e)
  {
   string Asc = ((char)0x25bc).ToString().PadLeft(4, ' ');
   string Des = ((char)0x25b2).ToString().PadLeft(4, ' ');

   if (sort == false)
   {
    sort = true;
    string oldStr = [].((char)0x25bc, (char)0x25b2, ' ');
    [].Text = oldStr + Des;
   }
   else if (sort == true)
   {
    sort = false;
    string oldStr = [].((char)0x25bc, (char)0x25b2, ' ');
    [].Text = oldStr + Asc;
   }

   if([].()=="n")//Set the tag of the column header to "n" in the designer, which means that the column is processed as a digital comparator, otherwise it is text     = new ListViewItemComparerNum(, sort);
   else
     = new ListViewItemComparer(, sort);
   ();
   int rowCount = ;
   if (currentCol != -1)
   {
    if ( != currentCol)
     [currentCol].Text = [currentCol].((char)0x25bc, (char)0x25b2, ' ');
   }
   currentCol = ;
  }//Text comparator public class ListViewItemComparer: IComparer  {
   public bool sort_b;
   public SortOrder order = ;

   private int col;

   public ListViewItemComparer()
   {
    col = 0;
   }

   public ListViewItemComparer(int column, bool sort)
   {
    col = column;
    sort_b = sort;
   }

   public int Compare(object x, object y)
   {
    if (sort_b)
    {
     return (((ListViewItem)x).SubItems[col].Text, ((ListViewItem)y).SubItems[col].Text);
    }
    else
    {
     return (((ListViewItem)y).SubItems[col].Text, ((ListViewItem)x).SubItems[col].Text);
    }
   }
  }  //Digital Comparator  public class ListViewItemComparerNum : IComparer
  {
   public bool sort_b;
   public SortOrder order = ;

   private int col;

   public ListViewItemComparerNum()
   {
    col = 0;
   }

   public ListViewItemComparerNum(int column, bool sort)
   {
    col = column;
    sort_b = sort;
   }

   public int Compare(object x, object y)
   {
    decimal d1=(((ListViewItem)x).SubItems[col].Text);
    decimal d2=(((ListViewItem)y).SubItems[col].Text);
    if (sort_b)
    {
     return (d1,d2);
    }
    else
    {
     return (d2,d1);
    }
   }
  }

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C# listview Click on the column header to sort instance

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