/// <summary> /// This class is an implementation of the 'IComparer' interface. /// </summary> public class ListViewColumnSorter : IComparer { /// <summary> /// Specifies the column to be sorted /// </summary> private int ColumnToSort; /// <summary> /// Specifies the order in which to sort (i.e. 'Ascending'). /// </summary> private SortOrder OrderOfSort; /// <summary> /// Case insensitive comparer object /// </summary> private CaseInsensitiveComparer ObjectCompare; /// <summary> /// Class constructor. Initializes various elements /// </summary> public ListViewColumnSorter() { // Initialize the column to '0' ColumnToSort = 0; // Initialize the sort order to 'none' OrderOfSort = SortOrder.None; // Initialize the CaseInsensitiveComparer object ObjectCompare = new CaseInsensitiveComparer(); } private int comaretInt = 0; /// <summary> /// This method is inherited from the IComparer interface. It compares the two objects passed using a case insensitive comparison. /// </summary> /// <param name="x">First object to be compared</param> /// <param name="y">Second object to be compared</param> /// <returns>The result of the comparison. "0" if equal, negative if 'x' is less than 'y' and positive if 'x' is greater than 'y'</returns> public int Compare(object x, object y) { int compareResult; ListViewItem listviewX, listviewY; // Cast the objects to be compared to ListViewItem objects listviewX = (ListViewItem)x; listviewY = (ListViewItem)y; if (int.TryParse(listviewX.SubItems[ColumnToSort].Text, out comaretInt) && int.TryParse(listviewY.SubItems[ColumnToSort].Text, out comaretInt)) { compareResult = int.Parse(listviewX.SubItems[ColumnToSort].Text).CompareTo(int.Parse(listviewY.SubItems[ColumnToSort].Text)); } else { // Compare the two items compareResult = ObjectCompare.Compare(listviewX.SubItems[ColumnToSort].Text, listviewY.SubItems[ColumnToSort].Text); } // Calculate correct return value based on object comparison if (OrderOfSort == SortOrder.Ascending) { // Ascending sort is selected, return normal result of compare operation return compareResult; } else if (OrderOfSort == SortOrder.Descending) { // Descending sort is selected, return negative result of compare operation return (-compareResult); } else { // Return '0' to indicate they are equal return 0; } } /// <summary> /// Gets or sets the number of the column to which to apply the sorting operation (Defaults to '0'). /// </summary> public int SortColumn { set { ColumnToSort = value; } get { return ColumnToSort; } } /// <summary> /// Gets or sets the order of sorting to apply (for example, 'Ascending' or 'Descending'). /// </summary> public SortOrder Order { set { OrderOfSort = value; } get { return OrderOfSort; } } }
吧上面的类添加到你的项目里面。
private ListViewColumnSorter lvwColumnSorter = new ListViewColumnSorter(); void listTask_ColumnClick(object sender, ColumnClickEventArgs e) { foreach (ColumnHeader ch in listTask.Columns) { ch.ImageIndex = -1; } listTask.ListViewItemSorter = lvwColumnSorter; //if (listTask.SmallImageList == null) //{ // listTask.SmallImageList = imageList1; //} //listTask.Columns[e.Column].ImageIndex = 0; if (e.Column == lvwColumnSorter.SortColumn) { // Reverse the current sort direction for this column. if (lvwColumnSorter.Order == SortOrder.Ascending) { lvwColumnSorter.Order = SortOrder.Descending; //listTask.Columns[e.Column].ImageIndex = 1; } else { lvwColumnSorter.Order = SortOrder.Ascending; } } else { // Set the column number that is to be sorted; default to ascending. lvwColumnSorter.SortColumn = e.Column; lvwColumnSorter.Order = SortOrder.Ascending; } // Perform the sort with these new sort options. this.listTask.Sort(); listTask.AutoResizeColumns(ColumnHeaderAutoResizeStyle.HeaderSize); listTask.Update(); }
在要使用的界面 实例化一个方法,第二步为 列头点击事件添加以下方法。