Спасибо за ссылку, но увы... Посмотрите мой проект, почему listView1, который кинут на форму - сортируется, а прицепленный к нему listView2 (объявлен в коде и на форму не кидался) не сортируется, хотя я его прицепил событиями и требую от него ортировки по тому же столбцу? Проект прилагается... | Код |
using System;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace VirtualMode
{
public partial class Form1 : Form
{
private ListViewColumnSorter lvwColumnSorter;
private ListView listView2 = new ListView();
public Form1()
{
InitializeComponent();
//this.listView2.Location = new System.Drawing.Point(0, 121);
this.listView2.Name = "listView2";
//this.listView2.Size = new System.Drawing.Size(292, 145);
this.listView2.TabIndex = 0;
this.listView2.UseCompatibleStateImageBehavior = false;
this.listView2.View = System.Windows.Forms.View.Details;
this.listView2.ColumnClick += new System.Windows.Forms.ColumnClickEventHandler(this.listView2_ColumnClick);
// Create an instance of a ListView column sorter and assign it
// to the ListView control.
lvwColumnSorter = new ListViewColumnSorter();
this.listView1.ListViewItemSorter = lvwColumnSorter;
this.listView2.ListViewItemSorter = lvwColumnSorter;
listView1.RetrieveVirtualItem += new RetrieveVirtualItemEventHandler(listView1_RetrieveVirtualItem);
}
void listView1_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
e.Item = listView2.Items[e.ItemIndex];
}
private void Form1_Load(object sender, EventArgs e)
{
#region Populate listView controls
ColumnHeader columnheader; // Used for creating column headers.
ListViewItem listviewitem; // Used for creating listview items.
// Ensure that the view is set to show details.
listView1.View = View.Details;
// Create some listview items consisting of first and last names.
listviewitem = new ListViewItem("John");
listviewitem.SubItems.Add("Smith");
this.listView2.Items.Add(listviewitem);
listviewitem = new ListViewItem("Bob");
listviewitem.SubItems.Add("Taylor");
this.listView2.Items.Add(listviewitem);
listviewitem = new ListViewItem("Kim");
listviewitem.SubItems.Add("Zimmerman");
this.listView2.Items.Add(listviewitem);
listviewitem = new ListViewItem("Olivia");
listviewitem.SubItems.Add("Johnson");
this.listView2.Items.Add(listviewitem);
foreach (ListViewItem item in listView2.Items)
{
listView1.Items.Add((ListViewItem)item.Clone());
}
// Create some column headers for the data.
columnheader = new ColumnHeader();
columnheader.Text = "First Name";
this.listView1.Columns.Add(columnheader);
this.listView2.Columns.Add((ColumnHeader)columnheader.Clone());
columnheader = new ColumnHeader();
columnheader.Text = "Last Name";
this.listView1.Columns.Add(columnheader);
this.listView2.Columns.Add((ColumnHeader)columnheader.Clone());
#endregion Populate listViews controls
// Loop through and size each column header to fit the column header text.
foreach (ColumnHeader ch in this.listView2.Columns)
{
ch.Width = -2;
}
//listView1.Dock = DockStyle.Fill;
listView1.VirtualListSize = listView1.Items.Count;
//listView1.VirtualMode = true;
listView2.VirtualListSize = listView2.Items.Count;
//listView.VirtualMode = true;
}
private void listView1_ColumnClick(object sender, ColumnClickEventArgs e)
{
// Determine if clicked column is already the column that is being sorted.
if (e.Column == lvwColumnSorter.SortColumn)
{
// Reverse the current sort direction for this column.
if (lvwColumnSorter.Order == SortOrder.Ascending)
{
lvwColumnSorter.Order = SortOrder.Descending;
}
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.listView1.Sort();
ColumnClickEventArgs ea = new ColumnClickEventArgs(e.Column);
this.listView2_ColumnClick(listView2, ea);
}
private void listView2_ColumnClick(object sender, ColumnClickEventArgs e)
{
// Determine if clicked column is already the column that is being sorted.
if (e.Column == lvwColumnSorter.SortColumn)
{
// Reverse the current sort direction for this column.
if (lvwColumnSorter.Order == SortOrder.Ascending)
{
lvwColumnSorter.Order = SortOrder.Descending;
}
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.listView2.Sort();
}
}
/// <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();
}
/// <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;
// 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;
}
}
}
}
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listViewTestDrive.7z 6,75 Kb |
ListView свойство View=details 
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