WPF:动态显示或隐藏Listview的某一列

      这几天做项目，需要做个listview满足能够动态显示或隐藏某些列，由于自己是菜鸟水平，查了两天资料也没有想出解决办法。就在我山穷水尽的时候看到了Mgen的一篇博客，给了我很大启发，所以我也决定把自己做的一些东西给大家说说，希望能帮助像我一样的菜鸟！

我读了Mgen的博文（http://www.cnblogs.com/mgen/archive/2011/07/24/2115458.html），给我很大启发，但也发现有些缺陷。我感觉的缺陷列举如下：

1、控制隐藏显示的逻辑关系有问题，搞不好会抛异常。

2、你设置管理控制显隐的控件只能是继承于itemcontrol的控件，有一定的局限性（比如说我想做一组button按钮，每个button控制一列话，它就不能用了）

下面，我贴出自己的代码，然后分析我是怎样解决这些问题的。

<Window x:Class="mgen_autocolumns.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:loc="clr-namespace:mgen_autocolumns"        
        Title="Mgen" Height="350" Width="525">
    <DockPanel>
        <!-- 已经有的ListView -->
        <ListView Name="list" DockPanel.Dock="Top" >
            <ListView.View>
                <GridView loc:GridViewUtility.ColumnObjectCollection="{Binding Path=ColumnCollection}">
                    <GridViewColumn Header="姓名"
                                Width="100"
                                DisplayMemberBinding="{Binding Name}" />
                    <GridViewColumn Header="年龄" 
                                Width="50"
                                DisplayMemberBinding="{Binding Age}" />
                    <GridViewColumn Header="分数" 
                                Width="100">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <ProgressBar Width="80" Height="10" Maximum="100" Value="{Binding Score}" />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>
            </ListView.View>
        </ListView>

        <!-- 列管理代码 -->
        <!-- loc命名空间是ColumnObject的CLR命名空间 -->
        <ListBox  ItemsSource="{Binding Path=ColumnCollection.GViewAllCollection}">
            <!--<ListBox.ItemContainerStyle>
                <Style TargetType="ListBoxItem">
                    <Setter Property="Focusable" Value="False" />
                </Style>
            </ListBox.ItemContainerStyle>-->
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <CheckBox IsChecked="{Binding Path=IsVisable}" 
                              Content="{Binding Path=Header}"
                              Margin="2"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </DockPanel>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;

namespace mgen_autocolumns
{
public class GridViewUtility : GridView
    {
#region 附加属性
public static readonly DependencyProperty ColumnObjectCollectionProperty =
            DependencyProperty.RegisterAttached("ColumnObjectCollection", typeof(ColumnObjectCollections), typeof(GridView),
new PropertyMetadata(GridViewUtility.OnColumnObjectCollectionChanged));

static void OnColumnObjectCollectionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            ColumnObjectCollections col = e.NewValue as ColumnObjectCollections;
if (col != null)
            {
                col.GViewCollection = ((GridView)d).Columns;
int index = 0;
                col.GViewAllCollection = new List<ColumnObject>();
foreach (GridViewColumn gc in col.GViewCollection)
                {
                    col.GViewAllCollection.Add(new ColumnObject(index, true,gc, col));
                    index++;
                }

            }

        }

public static ColumnObjectCollections GetColumnObjectCollection(GridView gridview)
        {
return (ColumnObjectCollections)gridview.GetValue(ColumnObjectCollectionProperty);
        }

public static void SetColumnObjectCollection(GridView gridew, ColumnObjectCollections collection)
        {
            gridew.SetValue(ColumnObjectCollectionProperty, collection);
        }


#endregion      
    }
public class ColumnObjectCollections
    {
public GridViewColumnCollection GViewCollection
        {
get;
set;
        }
public List<ColumnObject> GViewAllCollection
        {
get;
set;
        }
public void SetColumnVisable(int index, bool isVisable)
        {
if (index >= 0 && index < GViewAllCollection.Count)
            {
                GViewAllCollection[index].IsVisable = isVisable;
            }
        }

public bool IsColumnVisable(int index)
        {
if (index < 0 || index >= GViewAllCollection.Count)
            {
return false;
            }
return GViewAllCollection[index].IsVisable;
        }
    }
public class ColumnObject
    {
private int index;
private ColumnObjectCollections col;
private GridViewColumn column;
private bool isVisable;
public bool IsVisable
        {
get
            {
return isVisable;
            }
set
            {
                isVisable = value;
                SetVisable(isVisable);
            }

        }
public string Header
        {
get
            {
return this.column.Header.ToString();
            }
        }
public ColumnObject(int index, bool isVisable,GridViewColumn column, ColumnObjectCollections col)
        {
this.index = index;
this.IsVisable = true;
this.col = col;
this.column = column;
        }
private void SetVisable(bool isVisable)
        {
if (isVisable)
            {
if (!this.IsVisable)
                {
int index = this.index;
this.col.GViewAllCollection[index].isVisable = true;
for (int i = index + 1; i < this.col.GViewAllCollection.Count; i++)
                    {
if (this.col.GViewAllCollection[i].isVisable)
                        {
                            index = this.col.GViewAllCollection[i].index - 1;
break;
                        }
                    }
this.col.GViewCollection.Insert(index, this.column);
                }
            }
else
            {
this.col.GViewCollection.Remove(this.column);
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace mgen_autocolumns
{
   public class Person
    {
        public ColumnObjectCollections ColumnCollection
        {
            get;
            set;
        }
        public Person()
        {
            ColumnCollection = new ColumnObjectCollections();
        }
        public Person(string name, int age, int score)
        {
            Name = name;
            Age = age;
            Score = score;
        }
        public string Name { get; set; }
        public int Age { get; set; }
        public int Score { get; set; }

        public static Person[] Get()
        {
            return new Person[]
            {
                new Person("Zhang", 14, 91),
                new Person("Mgen",21,77),
                new Person("Lee",40,93),
                new Person("123",32,35),
                new Person("Gao",22,71),
                new Person("Sun",9,21),
                new Person("David",71,12)
            };
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace mgen_autocolumns
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {        
            this.DataContext = new Person();
            InitializeComponent();
            list.ItemsSource = Person.Get();
                                 
        }
       
    }
}