ListView.ListViewItemSorter 属性

获取或设置用于控件的排序比较器。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
Public Property ListViewItemSorter As IComparer
用法
Dim instance As ListView
Dim value As IComparer

value = instance.ListViewItemSorter

instance.ListViewItemSorter = value

public IComparer ListViewItemSorter { get; set; }

public:
property IComparer^ ListViewItemSorter {
    IComparer^ get ();
    void set (IComparer^ value);
}

/** @property */
public IComparer get_ListViewItemSorter ()

/** @property */
public void set_ListViewItemSorter (IComparer value)

public function get ListViewItemSorter () : IComparer

public function set ListViewItemSorter (value : IComparer)

属性值

IComparer，表示用于控件的排序比较器。

备注

ListViewItemSorter 属性允许您指定在调用 Sort 方法或将项添加到列表时，对 ListView 控件中的项执行排序的对象。注意，在项的标签文本发生更改时，项不会自动排序。

指定的对象必须是实现 IComparer 接口的类的实例，而该类有一个称为 Comparer.Compare 的方法。

您可以使用此属性提供自定义排序，例如，在详细信息视图中单击列标头的情况。为此，请创建一个类，该类实现 IComparer 接口，并提供一个接受排序所依据的列索引的构造函数。然后可以为 ColumnClick 事件实现一个处理程序，以使用被单击列的索引创建此类的实例。当您将 ListViewItemSorter 属性设置为新实例时，将自动使用指定的对象对 ListView 控件进行排序。对 Sort 方法的后续调用使用同一对象。

提示

当您设置 ListViewItemSorter 属性值时，将自动调用 Sort 方法。

示例

下面的代码示例创建包含 ListView 控件的窗体，在单击 ListView 控件中的列时可对各项进行手动排序。此示例定义了一个名为 ListViewItemComparer 的类，该类可实现执行 ListViewItem 比较的 System.Collections.IComparer 接口。该示例创建 ListViewItemComparer 的一个实例，并使用它来设置 ListView 控件的 ListViewItemSorter 属性。ColumnClick 事件处理程序中的 Sort 方法调用可使用 ListViewItemComparer 中定义的方法根据所单击的列来执行项的排序。

Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Collections


Namespace ListViewSortFormNamespace

    Public Class ListViewSortForm
        Inherits Form

        Private listView1 As ListView

        Public Sub New()
            ' Create ListView items to add to the control.
            Dim listViewItem1 As New ListViewItem(New String() {"Banana", "a", "b", "c"}, -1, Color.Empty, Color.Yellow, Nothing)
            Dim listViewItem2 As New ListViewItem(New String() {"Cherry", "v", "g", "t"}, -1, Color.Empty, Color.Red, New Font("Microsoft Sans Serif", 8.25F, FontStyle.Regular, GraphicsUnit.Point, CType(0, System.Byte)))
            Dim listViewItem3 As New ListViewItem(New String() {"Apple", "h", "j", "n"}, -1, Color.Empty, Color.Lime, Nothing)
            Dim listViewItem4 As New ListViewItem(New String() {"Pear", "y", "u", "i"}, -1, Color.Empty, Color.FromArgb(CType(192, System.Byte), CType(128, System.Byte), CType(156, System.Byte)), Nothing)

            'Initialize the ListView control and add columns to it.
            Me.listView1 = New ListView

            ' Set the initial sorting type for the ListView.
            Me.listView1.Sorting = SortOrder.None
            ' Disable automatic sorting to enable manual sorting.
            Me.listView1.View = View.Details
            ' Add columns and set their text.
            Me.listView1.Columns.Add(New ColumnHeader)
            Me.listView1.Columns(0).Text = "Column 1"
            Me.listView1.Columns(0).Width = 100
            listView1.Columns.Add(New ColumnHeader)
            listView1.Columns(1).Text = "Column 2"
            listView1.Columns.Add(New ColumnHeader)
            listView1.Columns(2).Text = "Column 3"
            listView1.Columns.Add(New ColumnHeader)
            listView1.Columns(3).Text = "Column 4"
            ' Suspend control logic until form is done configuring form.
            Me.SuspendLayout()
            ' Add Items to the ListView control.
            Me.listView1.Items.AddRange(New ListViewItem() {listViewItem1, listViewItem2, listViewItem3, listViewItem4})
            ' Set the location and size of the ListView control.
            Me.listView1.Location = New Point(10, 10)
            Me.listView1.Name = "listView1"
            Me.listView1.Size = New Size(300, 100)
            Me.listView1.TabIndex = 0
            ' Enable editing of the items in the ListView.
            Me.listView1.LabelEdit = True
            ' Connect the ListView.ColumnClick event to the ColumnClick event handler.
            AddHandler Me.listView1.ColumnClick, AddressOf ColumnClick

            ' Initialize the form.
            Me.ClientSize = New Size(400, 400)
            Me.Controls.AddRange(New Control() {Me.listView1})
            Me.Name = "ListViewSortForm"
            Me.Text = "Sorted ListView Control"
            ' Resume layout of the form.
            Me.ResumeLayout(False)
        End Sub 'New


        ' ColumnClick event handler.
        Private Sub ColumnClick(ByVal o As Object, ByVal e As ColumnClickEventArgs)
            ' Set the ListViewItemSorter property to a new ListViewItemComparer 
            ' object. Setting this property immediately sorts the 
            ' ListView using the ListViewItemComparer object.
            Me.listView1.ListViewItemSorter = New ListViewItemComparer(e.Column)
        End Sub

    End Class

    ' Implements the manual sorting of items by columns.
    Class ListViewItemComparer
        Implements IComparer

        Private col As Integer

        Public Sub New()
            col = 0
        End Sub

        Public Sub New(ByVal column As Integer)
            col = column
        End Sub

        Public Function Compare(ByVal x As Object, ByVal y As Object) As Integer _
           Implements IComparer.Compare
            Return [String].Compare(CType(x, ListViewItem).SubItems(col).Text, CType(y, ListViewItem).SubItems(col).Text)
        End Function
    End Class
End Namespace

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Collections;

namespace ListViewSortFormNamespace
{
    
   
    public class ListViewSortForm : Form
    {
        private ListView listView1;
       
        public ListViewSortForm()
        {
            // Create ListView items to add to the control.
            ListViewItem listViewItem1 = new ListViewItem(new string[] {"Banana","a","b","c"}, -1, Color.Empty, Color.Yellow, null);
            ListViewItem listViewItem2 = new ListViewItem(new string[] {"Cherry","v","g","t"}, -1, Color.Empty, Color.Red, new Font("Microsoft Sans Serif", 8.25F, FontStyle.Regular, GraphicsUnit.Point, ((System.Byte)(0))));
            ListViewItem listViewItem3 = new ListViewItem(new string[] {"Apple","h","j","n"}, -1, Color.Empty, Color.Lime, null);
            ListViewItem listViewItem4 = new ListViewItem(new string[] {"Pear","y","u","i"}, -1, Color.Empty, Color.FromArgb(((System.Byte)(192)), ((System.Byte)(128)), ((System.Byte)(156))), null);
     
            //Initialize the ListView control and add columns to it.
            this.listView1 = new ListView();

            // Set the initial sorting type for the ListView.
            this.listView1.Sorting = SortOrder.None;
            // Disable automatic sorting to enable manual sorting.
            this.listView1.View = View.Details;
            // Add columns and set their text.
            this.listView1.Columns.Add(new ColumnHeader());
            this.listView1.Columns[0].Text = "Column 1";
            this.listView1.Columns[0].Width = 100;
            listView1.Columns.Add(new ColumnHeader());
            listView1.Columns[1].Text = "Column 2";
            listView1.Columns.Add(new ColumnHeader());
            listView1.Columns[2].Text = "Column 3";
            listView1.Columns.Add(new ColumnHeader());
            listView1.Columns[3].Text = "Column 4";
            // Suspend control logic until form is done configuring form.
            this.SuspendLayout();
            // Add Items to the ListView control.
            this.listView1.Items.AddRange(new ListViewItem[] {listViewItem1,
                listViewItem2,
                listViewItem3,
                listViewItem4});
            // Set the location and size of the ListView control.
            this.listView1.Location = new Point(10, 10);
            this.listView1.Name = "listView1";
            this.listView1.Size = new Size(300, 100);
            this.listView1.TabIndex = 0;
            // Enable editing of the items in the ListView.
            this.listView1.LabelEdit = true;
            // Connect the ListView.ColumnClick event to the ColumnClick event handler.
            this.listView1.ColumnClick += new ColumnClickEventHandler(ColumnClick);
            
            // Initialize the form.
            this.ClientSize = new Size(400, 400);
            this.Controls.AddRange(new Control[] {this.listView1});
            this.Name = "ListViewSortForm";
            this.Text = "Sorted ListView Control";
            // Resume layout of the form.
            this.ResumeLayout(false);
        }
        
    
        // ColumnClick event handler.
        private void ColumnClick(object o, ColumnClickEventArgs e)
        {
            // Set the ListViewItemSorter property to a new ListViewItemComparer 
            // object. Setting this property immediately sorts the 
            // ListView using the ListViewItemComparer object.
            this.listView1.ListViewItemSorter = new ListViewItemComparer(e.Column);
        }

        [System.STAThreadAttribute()]
        public static void Main()
        {
            Application.Run(new ListViewSortForm());
        }

    }

    // Implements the manual sorting of items by columns.
    class ListViewItemComparer : IComparer
    {
        private int col;
        public ListViewItemComparer()
        {
            col = 0;
        }
        public ListViewItemComparer(int column)
        {
            col = column;
        }
        public int Compare(object x, object y)
        {
            return String.Compare(((ListViewItem)x).SubItems[col].Text, ((ListViewItem)y).SubItems[col].Text);
        }
    }

}

#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Windows::Forms;
using namespace System::Drawing;
using namespace System::Collections;

// Implements the manual sorting of items by columns.
ref class ListViewItemComparer: public IComparer
{
private:
   int col;

public:
   ListViewItemComparer()
   {
      col = 0;
   }

   ListViewItemComparer( int column )
   {
      col = column;
   }

   virtual int Compare( Object^ x, Object^ y )
   {
      return String::Compare( (dynamic_cast<ListViewItem^>(x))->SubItems[ col ]->Text,
                              (dynamic_cast<ListViewItem^>(y))->SubItems[ col ]->Text );
   }
};

public ref class ListViewSortForm: public Form
{
private:
   ListView^ listView1;

public:
   ListViewSortForm()
   {
      // Create ListView items to add to the control.
      array<String^>^temp0 = {"Banana","a","b","c"};
      ListViewItem^ listViewItem1 = gcnew ListViewItem( temp0,-1,Color::Empty,Color::Yellow,nullptr );
      array<String^>^temp1 = {"Cherry","v","g","t"};
      ListViewItem^ listViewItem2 = gcnew ListViewItem( temp1,-1,Color::Empty,Color::Red,
                 gcnew System::Drawing::Font( "Microsoft Sans Serif",8.25F,FontStyle::Regular,GraphicsUnit::Point,0 ) );
      array<String^>^temp2 = {"Apple","h","j","n"};
      ListViewItem^ listViewItem3 = gcnew ListViewItem( temp2,-1,Color::Empty,Color::Lime,nullptr );
      array<String^>^temp3 = {"Pear","y","u","i"};
      ListViewItem^ listViewItem4 = gcnew ListViewItem( temp3,-1,Color::Empty,Color::FromArgb( 192, 128, 156 ),nullptr );

      //Initialize the ListView control and add columns to it.
      this->listView1 = gcnew ListView;

      // Set the initial sorting type for the ListView.
      this->listView1->Sorting = SortOrder::None;

      // Disable automatic sorting to enable manual sorting.
      this->listView1->View = View::Details;

      // Add columns and set their text.
      this->listView1->Columns->Add( gcnew ColumnHeader );
      this->listView1->Columns[ 0 ]->Text = "Column 1";
      this->listView1->Columns[ 0 ]->Width = 100;
      listView1->Columns->Add( gcnew ColumnHeader );
      listView1->Columns[ 1 ]->Text = "Column 2";
      listView1->Columns->Add( gcnew ColumnHeader );
      listView1->Columns[ 2 ]->Text = "Column 3";
      listView1->Columns->Add( gcnew ColumnHeader );
      listView1->Columns[ 3 ]->Text = "Column 4";

      // Suspend control logic until form is done configuring form.
      this->SuspendLayout();

      // Add Items to the ListView control.
      array<ListViewItem^>^temp4 = {listViewItem1,listViewItem2,listViewItem3,listViewItem4};
      this->listView1->Items->AddRange( temp4 );

      // Set the location and size of the ListView control.
      this->listView1->Location = Point(10,10);
      this->listView1->Name = "listView1";
      this->listView1->Size = System::Drawing::Size( 300, 100 );
      this->listView1->TabIndex = 0;

      // Enable editing of the items in the ListView.
      this->listView1->LabelEdit = true;

      // Connect the ListView::ColumnClick event to the ColumnClick event handler.
      this->listView1->ColumnClick += gcnew ColumnClickEventHandler( this, &ListViewSortForm::ColumnClick );

      // Initialize the form.
      this->ClientSize = System::Drawing::Size( 400, 400 );
      array<Control^>^temp5 = {this->listView1};
      this->Controls->AddRange( temp5 );
      this->Name = "ListViewSortForm";
      this->Text = "Sorted ListView Control";

      // Resume lay[Out] of* the form.
      this->ResumeLayout( false );
   }

private:

   // ColumnClick event handler.
   void ColumnClick( Object^ /*o*/, ColumnClickEventArgs^ e )
   {
      // Set the ListViewItemSorter property to a new ListViewItemComparer 
      // object. Setting this property immediately sorts the 
      // ListView using the ListViewItemComparer object.
      this->listView1->ListViewItemSorter = gcnew ListViewItemComparer( e->Column );
   }
};

[System::STAThreadAttribute]
int main()
{
   Application::Run( gcnew ListViewSortForm );
}

package ListViewSortFormNamespace;

import System.*;
import System.Windows.Forms.*;
import System.Drawing.*;
import System.Collections.*;

public class ListViewSortForm extends Form
{
    private ListView listView1;

    public ListViewSortForm()
    {
        // Create ListView items to add to the control.
        ListViewItem listViewItem1 = new ListViewItem(new String[] { "Banana", 
            "a", "b", "c" }, -1, Color.Empty, Color.get_Yellow(), null);
        ListViewItem listViewItem2 = new ListViewItem(new String[] { "Cherry", 
            "v", "g", "t" }, -1, Color.Empty, Color.get_Red(), 
            new Font("Microsoft Sans Serif", (float)8.25, FontStyle.Regular, 
            GraphicsUnit.Point, (ubyte)0));
        ListViewItem listViewItem3 = new ListViewItem(new String[] { "Apple", 
            "h", "j", "n" }, -1, Color.Empty, Color.get_Lime(), null);
        ListViewItem listViewItem4 = new ListViewItem(new String[] { "Pear", 
            "y", "u", "i" }, -1, Color.Empty, Color.FromArgb(192, 128, 156), 
            null);

        //Initialize the ListView control and add columns to it.
        this.listView1 = new ListView();

        // Set the initial sorting type for the ListView.
        this.listView1.set_Sorting(SortOrder.None);

        // Disable automatic sorting to enable manual sorting.
        this.listView1.set_View(View.Details);

        // Add columns and set their text.
        this.listView1.get_Columns().Add(new ColumnHeader());
        this.listView1.get_Columns().get_Item(0).set_Text("Column 1");
        this.listView1.get_Columns().get_Item(0).set_Width(100);
        listView1.get_Columns().Add(new ColumnHeader());
        listView1.get_Columns().get_Item(1).set_Text("Column 2");
        listView1.get_Columns().Add(new ColumnHeader());
        listView1.get_Columns().get_Item(2).set_Text("Column 3");
        listView1.get_Columns().Add(new ColumnHeader());
        listView1.get_Columns().get_Item(3).set_Text("Column 4");

        // Suspend control logic until form is done configuring form.
        this.SuspendLayout();

        // Add Items to the ListView control.
        this.listView1.get_Items().AddRange(new ListViewItem[] { listViewItem1,
            listViewItem2, listViewItem3, listViewItem4 });

        // Set the location and size of the ListView control.
        this.listView1.set_Location(new Point(10, 10));
        this.listView1.set_Name("listView1");
        this.listView1.set_Size(new Size(300, 100));
        this.listView1.set_TabIndex(0);

        // Enable editing of the items in the ListView.
        this.listView1.set_LabelEdit(true);

        // Connect the ListView.ColumnClick event to the 
        // ColumnClick event handler.
        this.listView1.add_ColumnClick(new ColumnClickEventHandler(ColumnClick));

        // Initialize the form.
        this.set_ClientSize(new Size(400, 400));
        this.get_Controls().AddRange(new Control[] { this.listView1 });
        this.set_Name("ListViewSortForm");
        this.set_Text("Sorted ListView Control");

        // Resume layout of the form.
        this.ResumeLayout(false);
    } //ListViewSortForm

    // ColumnClick event handler.
    private void ColumnClick(Object o, ColumnClickEventArgs e)
    {
        // Set the ListViewItemSorter property to a new ListViewItemComparer 
        // object. Setting this property immediately sorts the 
        // ListView using the ListViewItemComparer object.
        this.listView1.set_ListViewItemSorter(
            new ListViewItemComparer(e.get_Column()));
    } //ColumnClick

    /** @attribute System.STAThreadAttribute()
     */
    public static void main(String[] args)
    {
        Application.Run(new ListViewSortForm());
    } //main
} //ListViewSortForm

// Implements the manual sorting of items by columns.
class ListViewItemComparer implements IComparer
{
    private int col;

    public ListViewItemComparer()
    {
        col = 0;
    } //ListViewItemComparer

    public ListViewItemComparer(int column)
    {
        col = column;
    } //ListViewItemComparer

    public int Compare(Object x, Object y)
    {
        return String.Compare(
            ((ListViewItem)x).get_SubItems().get_Item(col).get_Text(),
            ((ListViewItem)y).get_SubItems().get_Item(col).get_Text());
    } //Compare
} //ListViewItemComparer

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

ListView 类
ListView 成员
System.Windows.Forms 命名空间
IComparer
ColumnClick