88 lines
2.2 KiB
C#
88 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.ComponentModel;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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using System.Collections;
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namespace ServerExplorer.Controls
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{
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[DefaultProperty("Items")]
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[DefaultEvent("SelectedIndexChanged")]
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[ComVisible(true)]
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[ClassInterface(ClassInterfaceType.AutoDispatch)]
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[Docking(DockingBehavior.Ask)]
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public class CustomListView : ListView
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{
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#region Declarations
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ListViewItemComparer itemComparer = new ListViewItemComparer();
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#endregion
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#region Properties
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private bool allowSorting = false;
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public bool AllowSorting
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{
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get { return allowSorting; }
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set { allowSorting = value; }
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}
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#endregion
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#region Control life cicle
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public CustomListView()
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{
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ColumnClick += CustomListView_ColumnClick;
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}
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#endregion
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#region Events
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private void CustomListView_ColumnClick(object sender, ColumnClickEventArgs e)
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{
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if (!allowSorting) { return; }
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itemComparer.SetColumn(e.Column);
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ListViewItemSorter = itemComparer;
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Sort();
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}
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#endregion
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}
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#region ListViewItemComparer
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internal class ListViewItemComparer : IComparer
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{
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private int _col;
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private bool _ascending;
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public void SetColumn(int col)
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{
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_col = col;
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_ascending = _col != col || !_ascending;
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}
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public int Compare(object x, object y)
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{
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var itemA = (ListViewItem) x;
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var itemB = (ListViewItem) y;
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if (itemA.SubItems.Count <= _col || itemB.SubItems.Count <= _col)
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{
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return -1;
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}
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return _ascending
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? String.CompareOrdinal(itemA.SubItems[_col].Text, itemB.SubItems[_col].Text)
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: String.CompareOrdinal(itemB.SubItems[_col].Text, itemA.SubItems[_col].Text);
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}
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}
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#endregion
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}
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