CustomListView: ListView que permite reordenar los datos (AllowSorting)

2013-11-22 00:50:24 +01:00
parent 4f7664794f
commit 12e67b0e25
8 changed files with 182 additions and 85 deletions
--- a/ServerExplorer/Controls/CustomListView.cs
+++ b/ServerExplorer/Controls/CustomListView.cs
@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+using System.Collections;
+
+namespace ServerExplorer.Controls
+{
+    [DefaultProperty("Items")]
+    [DefaultEvent("SelectedIndexChanged")]
+    [ComVisible(true)]
+    [ClassInterface(ClassInterfaceType.AutoDispatch)]
+    [Docking(DockingBehavior.Ask)]
+    public class CustomListView : ListView
+    {
+        #region Declarations
+
+        ListViewItemComparer itemComparer = new ListViewItemComparer();
+
+        #endregion
+
+        #region Properties
+
+        private bool allowSorting = false;
+        public bool AllowSorting
+        {
+            get { return allowSorting; }
+            set { allowSorting = value; }
+        }
+
+        #endregion
+
+        #region Control life cicle
+
+        public CustomListView()
+        {
+            ColumnClick += CustomListView_ColumnClick;
+        }
+
+        #endregion
+
+        #region Events
+
+        private void CustomListView_ColumnClick(object sender, ColumnClickEventArgs e)
+        {
+            if (!allowSorting) { return; }
+            itemComparer.SetColumn(e.Column);
+            ListViewItemSorter = itemComparer;
+            Sort();
+        }
+
+        #endregion
+    }
+
+    #region ListViewItemComparer
+
+    class ListViewItemComparer : IComparer
+    {
+        private int col;
+        private bool ascending;
+
+        public void SetColumn(int col)
+        {
+            if (this.col == col)
+            {
+                ascending = ascending ? false : true;
+            }
+            else
+            {
+                this.col = col;
+                ascending = true;
+            }
+        }
+
+        public int Compare(object x, object y)
+        {
+            int returnVal = -1;
+            if (ascending)
+            {
+                returnVal = String.Compare(
+                    ((ListViewItem)x).SubItems[col].Text,
+                    ((ListViewItem)y).SubItems[col].Text);
+            }
+            else
+            {
+                returnVal = String.Compare(
+                    ((ListViewItem)y).SubItems[col].Text,
+                    ((ListViewItem)x).SubItems[col].Text);
+            }
+            return returnVal;
+        }
+    }
+    #endregion
+}