Example code sharing to implement C#listview click column header Ordering

Here is a small series for everyone to bring a C # ListView click the column header to sort the instance. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

Examples are as follows:

#region custom variable 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 = This.lvw.columns[e.column].    Text.trimend (char) 0X25BC, (char) 0x25b2, "); This.lvw.columns[e.column].   Text = Oldstr + Des;    } else if (sort = true) {sort = false; String oldstr = This.lvw.columns[e.column].    Text.trimend (char) 0X25BC, (char) 0x25b2, "); This.lvw.columns[e.column].   Text = Oldstr + Asc; } if (LVW. Columns[e.column]. tag.tostring () = = "n")//The column header tag is set to "N" in the designer, which means that the column is processed by a digital comparator, otherwise the text is LVW.   Listviewitemsorter = new Listviewitemcomparernum (e.column, sort); Else LVW.   Listviewitemsorter = new ListViewItemComparer (e.column, sort);   This.lvw.Sort ();   int rowCount = This.lvw.Items.Count; if (currentcol! =-1) {if (E.column! = Currentcol) this.Lvw. Columns[currentcol]. Text = This.lvw.columns[currentcol].   Text.trimend (char) 0X25BC, (char) 0x25b2, ");  } Currentcol = E.column;   }//Text Comparator public class Listviewitemcomparer:icomparer {public bool sort_b;   Public SortOrder order = sortorder.ascending;   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 String.Compare (((ListViewItem) x). Subitems[col]. Text, ((ListViewItem) y). Subitems[col].    Text); } else {return String.Compare (((ListViewItem) y). Subitems[col]. Text, ((ListViewItem) x). Subitems[col].    Text);   }}}//Digital comparator public class Listviewitemcomparernum:icomparer {public bool sort_b;   Public SortOrder order = sortorder.ascending;   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=convert.todecimal ((ListViewItem) x). Subitems[col].    Text); Decimal D2=convert.todecimal (((ListViewItem) y). Subitems[col].    Text);    if (sort_b) {return decimal.compare (D1,D2);    } else {return decimal.compare (D2,D1); }   }  }