#region 自定义变量

 int currentCol = -1;

 bool sort;

 #endregion

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")//在设计器中把列头的tag设为"n",则表示该列按数字比较器处理,否则为文本

 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;

 }

//文本比较器

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);

 }

 }

 }

 //数字比较器

 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);

 }

 }

 }