ListView Column 클릭시 정렬

1. 정렬 클래스 

ListView하고 같은 NameSpace 안에 정의해줍니다.

using System.Collections;
 class ListviewItemComparer : IComparer
 {
        private int col;
        public string sort = "asc";
        public ListviewItemComparer()
        {
            col = 0;
        }

        public ListviewItemComparer(int column, string sort)
        {
            col = column;
            this.sort = sort;
        }

        public int Compare(object x, object y)
        {
            if (sort == "asc")
            {
                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);
            }
        }
    }

2. ListView ColumnClick 이벤트 생성

private void ListView_MemoList_ColumnClick(object sender, ColumnClickEventArgs e)
{
      if (e.Column == 0)
      {
         return;
      }

      ListView_MemoList.Columns[e.Column].Text = ListView_MemoList.Columns[e.Column].Text.Replace(" ▼", "");
      ListView_MemoList.Columns[e.Column].Text = ListView_MemoList.Columns[e.Column].Text.Replace(" ▲", "");
 

      if (this.ListView_MemoList.Sorting == SortOrder.Ascending || ListView_MemoList.Sorting == SortOrder.None)
      {
          this.ListView_MemoList.ListViewItemSorter = new ListviewItemComparer(e.Column, "desc");
          ListView_MemoList.Sorting = SortOrder.Descending;
          ListView_MemoList.Columns[e.Column].Text = ListView_MemoList.Columns[e.Column].Text + " ▼";
      }
      else
      {
          this.ListView_MemoList.ListViewItemSorter = new ListviewItemComparer(e.Column, "asc");
          ListView_MemoList.Sorting = SortOrder.Ascending;
          ListView_MemoList.Columns[e.Column].Text = ListView_MemoList.Columns[e.Column].Text + " ▲";
      }

      ListView_MemoList.Sort();
}  

적용 결과