ListView.OnColumnClick 方法
引发 ColumnClick 事件。
**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）
语法
声明
Protected Overridable Sub OnColumnClick ( _
e As ColumnClickEventArgs _
)
用法
Dim e As ColumnClickEventArgs
Me.OnColumnClick(e)
protected virtual void OnColumnClick (
ColumnClickEventArgs e
)
protected:
virtual void OnColumnClick (
ColumnClickEventArgs^ e
)
protected void OnColumnClick (
ColumnClickEventArgs e
)
protected function OnColumnClick (
e : ColumnClickEventArgs
)
参数
- e
包含事件数据的 ColumnClickEventArgs。
备注
引发事件时会通过委托调用事件处理程序。有关更多信息，请参见 引发事件。
OnColumnClick 方法还允许派生类对事件进行处理而不必附加委托。这是在派生类中处理事件的首选技术。
给继承者的说明 在派生类中重写 OnColumnClick 时，一定要调用基类的 OnColumnClick 方法，以便已注册的委托对事件进行接收。
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 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
.NET Compact Framework
受以下版本支持：2.0、1.0
请参见
参考
ListView 类
ListView 成员
System.Windows.Forms 命名空间
ColumnClick
ColumnClickEventArgs 类