Proprietà ListView.OwnerDraw (System.Windows.Forms)

Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Globalization
Imports System.Windows.Forms

Public Class ListViewOwnerDraw
    Inherits Form
    Private WithEvents listView1 As New ListView()
    Private WithEvents contextMenu1 As New ContextMenu()
    Private WithEvents listMenuItem As New MenuItem("List")
    Private WithEvents detailsMenuItem As New MenuItem("Details")

    Public Sub New()

        ' Initialize the shortcut menu. 
        contextMenu1.MenuItems.AddRange(New MenuItem() _
            {Me.listMenuItem, Me.detailsMenuItem})

        ' Initialize the ListView control.
        With Me.listView1
            .BackColor = Color.Black
            .ForeColor = Color.White
            .Dock = DockStyle.Fill
            .View = View.Details
            .FullRowSelect = True
            .OwnerDraw = True
            .ContextMenu = Me.contextMenu1
        End With

        ' Add columns to the ListView control.
        With Me.listView1.Columns
            .Add("Name", 72, HorizontalAlignment.Center)
            .Add("First", 72, HorizontalAlignment.Center)
            .Add("Second", 72, HorizontalAlignment.Center)
            .Add("Third", 72, HorizontalAlignment.Center)
        End With

        ' Create items and add them to the ListView control.
        Dim listViewItem1 As New ListViewItem(New String() _
            {"One", "20", "30", "-40"}, -1)
        Dim listViewItem2 As New ListViewItem(New String() _
            {"Two", "-250", "145", "37"}, -1)
        Dim listViewItem3 As New ListViewItem(New String() _
            {"Three", "200", "800", "-1,001"}, -1)
        Dim listViewItem4 As New ListViewItem(New String() _
            {"Four", "not available", "-2", "100"}, -1)
        Me.listView1.Items.AddRange(New ListViewItem() _
            {listViewItem1, listViewItem2, listViewItem3, listViewItem4})

        ' Initialize the form and add the ListView control to it.
        With Me
            .ClientSize = New Size(292, 79)
            .FormBorderStyle = FormBorderStyle.FixedSingle
            .MaximizeBox = False
            .Text = "ListView OwnerDraw Example"
            .Controls.Add(Me.listView1)
        End With

    End Sub

    ' Clean up any resources being used.        
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            contextMenu1.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub

    <STAThread()> _
    Shared Sub Main()
        Application.Run(New ListViewOwnerDraw())
    End Sub

    ' Sets the ListView control to the List view.
    Private Sub menuItemList_Click(ByVal sender As Object, _
        ByVal e As EventArgs) _
        Handles listMenuItem.Click

        Me.listView1.View = View.List

    End Sub

    ' Sets the ListView control to the Details view.
    Private Sub menuItemDetails_Click(ByVal sender As Object, _
        ByVal e As EventArgs) _
        Handles detailsMenuItem.Click

        Me.listView1.View = View.Details

        ' Reset the tag on each item to re-enable the workaround 
        ' in the MouseMove event handler.
        For Each item As ListViewItem In listView1.Items
            item.Tag = Nothing
        Next

    End Sub

    ' Selects and focuses an item when it is clicked anywhere along 
    ' its width. The click must normally be on the parent item text.
    Private Sub listView1_MouseUp(ByVal sender As Object, _
        ByVal e As MouseEventArgs) _
        Handles listView1.MouseUp

        Dim clickedItem As ListViewItem = Me.listView1.GetItemAt(5, e.Y)
        If Not (clickedItem Is Nothing) Then
            clickedItem.Selected = True
            clickedItem.Focused = True
        End If

    End Sub

    ' Draws the backgrounds for entire ListView items.
    Private Sub listView1_DrawItem(ByVal sender As Object, _
        ByVal e As DrawListViewItemEventArgs) _
        Handles listView1.DrawItem

        If Not (e.State And ListViewItemStates.Selected) = 0 Then

            ' Draw the background for a selected item.
            e.Graphics.FillRectangle(Brushes.Maroon, e.Bounds)
            e.DrawFocusRectangle()

        Else

            ' Draw the background for an unselected item.
            Dim brush As New LinearGradientBrush(e.Bounds, Color.Orange, _
                Color.Maroon, LinearGradientMode.Horizontal)
            Try
                e.Graphics.FillRectangle(brush, e.Bounds)
            Finally
                brush.Dispose()
            End Try

        End If

        ' Draw the item text for views other than the Details view.
        If Not Me.listView1.View = View.Details Then
            e.DrawText()
        End If

    End Sub

    ' Draws subitem text and applies content-based formatting.
    Private Sub listView1_DrawSubItem(ByVal sender As Object, _
        ByVal e As DrawListViewSubItemEventArgs) _
        Handles listView1.DrawSubItem

        Dim flags As TextFormatFlags = TextFormatFlags.Left

        Dim sf As New StringFormat()
        Try

            ' Store the column text alignment, letting it default
            ' to Left if it has not been set to Center or Right.
            Select Case e.Header.TextAlign
                Case HorizontalAlignment.Center
                    sf.Alignment = StringAlignment.Center
                    flags = TextFormatFlags.HorizontalCenter
                Case HorizontalAlignment.Right
                    sf.Alignment = StringAlignment.Far
                    flags = TextFormatFlags.Right
            End Select

            ' Draw the text and background for a subitem with a 
            ' negative value. 
            Dim subItemValue As Double
            If e.ColumnIndex > 0 AndAlso _
                Double.TryParse(e.SubItem.Text, NumberStyles.Currency, _
                NumberFormatInfo.CurrentInfo, subItemValue) AndAlso _
                subItemValue < 0 Then

                ' Unless the item is selected, draw the standard 
                ' background to make it stand out from the gradient.
                If (e.ItemState And ListViewItemStates.Selected) = 0 Then
                    e.DrawBackground()
                End If

                ' Draw the subitem text in red to highlight it. 
                e.Graphics.DrawString(e.SubItem.Text, _
                    Me.listView1.Font, Brushes.Red, e.Bounds, sf)

                Return

            End If

            ' Draw normal text for a subitem with a nonnegative 
            ' or nonnumerical value.
            e.DrawText(flags)

        Finally
            sf.Dispose()
        End Try

    End Sub

    ' Draws column headers.
    Private Sub listView1_DrawColumnHeader(ByVal sender As Object, _
        ByVal e As DrawListViewColumnHeaderEventArgs) _
        Handles listView1.DrawColumnHeader

        Dim sf As New StringFormat()
        Try

            ' Store the column text alignment, letting it default
            ' to Left if it has not been set to Center or Right.
            Select Case e.Header.TextAlign
                Case HorizontalAlignment.Center
                    sf.Alignment = StringAlignment.Center
                Case HorizontalAlignment.Right
                    sf.Alignment = StringAlignment.Far
            End Select

            ' Draw the standard header background.
            e.DrawBackground()

            ' Draw the header text.
            Dim headerFont As New Font("Helvetica", 10, FontStyle.Bold)
            Try
                e.Graphics.DrawString(e.Header.Text, headerFont, _
                    Brushes.Black, e.Bounds, sf)
            Finally
                headerFont.Dispose()
            End Try

        Finally
            sf.Dispose()
        End Try

    End Sub

    ' Forces each row to repaint itself the first time the mouse moves over 
    ' it, compensating for an extra DrawItem event sent by the wrapped 
    ' Win32 control.
    Private Sub listView1_MouseMove(ByVal sender As Object, _
        ByVal e As MouseEventArgs) _
        Handles listView1.MouseMove

        Dim item As ListViewItem = listView1.GetItemAt(e.X, e.Y)
        If Not item Is Nothing AndAlso item.Tag Is Nothing Then
            listView1.Invalidate(item.Bounds)
            item.Tag = "tagged"
        End If

    End Sub

End Class

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Globalization;
using System.Windows.Forms;

public class ListViewOwnerDraw : Form
{
    private ListView listView1 = new ListView();
    private ContextMenu contextMenu1 = new ContextMenu();

    public ListViewOwnerDraw()
    {
        // Initialize the ListView control.
        listView1.BackColor = Color.Black;
        listView1.ForeColor = Color.White;
        listView1.Dock = DockStyle.Fill;
        listView1.View = View.Details;
        listView1.FullRowSelect = true;

        // Add columns to the ListView control.
        listView1.Columns.Add("Name", 72, HorizontalAlignment.Center);
        listView1.Columns.Add("First", 72, HorizontalAlignment.Center);
        listView1.Columns.Add("Second", 72, HorizontalAlignment.Center);
        listView1.Columns.Add("Third", 72, HorizontalAlignment.Center);

        // Create items and add them to the ListView control.
        ListViewItem listViewItem1 = new ListViewItem(new string[] { "One", "20", "30", "-40" }, -1);
        ListViewItem listViewItem2 = new ListViewItem(new string[] { "Two", "-250", "145", "37" }, -1);
        ListViewItem listViewItem3 = new ListViewItem(new string[] { "Three", "200", "800", "-1,001" }, -1);
        ListViewItem listViewItem4 = new ListViewItem(new string[] { "Four", "not available", "-2", "100" }, -1);
        listView1.Items.AddRange(new ListViewItem[] { listViewItem1, listViewItem2, listViewItem3, listViewItem4 });

        // Initialize the shortcut menu and 
        // assign it to the ListView control.
        contextMenu1.MenuItems.Add("List",
            new EventHandler(menuItemList_Click));
        contextMenu1.MenuItems.Add("Details",
            new EventHandler(menuItemDetails_Click));
        listView1.ContextMenu = contextMenu1;

        // Configure the ListView control for owner-draw and add 
        // handlers for the owner-draw events.
        listView1.OwnerDraw = true;
        listView1.DrawItem += new
            DrawListViewItemEventHandler(listView1_DrawItem);
        listView1.DrawSubItem += new
            DrawListViewSubItemEventHandler(listView1_DrawSubItem);
        listView1.DrawColumnHeader += new
            DrawListViewColumnHeaderEventHandler(listView1_DrawColumnHeader);

        // Add a handler for the MouseMove event to compensate for an 
        // extra DrawItem event that occurs the first time the mouse 
        // moves over each row. 
        listView1.MouseMove += new MouseEventHandler(listView1_MouseMove);

        // Add a handler for the MouseUp event so an item can be 
        // selected by clicking anywhere along its width.
        listView1.MouseUp += new MouseEventHandler(listView1_MouseUp);

        // Initialize the form and add the ListView control to it.
        this.ClientSize = new Size(292, 79);
        this.FormBorderStyle = FormBorderStyle.FixedSingle;
        this.MaximizeBox = false;
        this.Text = "ListView OwnerDraw Example";
        this.Controls.Add(listView1);
    }

    // Clean up any resources being used.        
    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            contextMenu1.Dispose();
        }
        base.Dispose(disposing);
    }

    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new ListViewOwnerDraw());
    }

    // Sets the ListView control to the List view.
    private void menuItemList_Click(object sender, EventArgs e)
    {
        listView1.View = View.List;
        listView1.Invalidate();
    }

    // Sets the ListView control to the Details view.
    private void menuItemDetails_Click(object sender, EventArgs e)
    {
        listView1.View = View.Details;

        // Reset the tag on each item to re-enable the workaround in
        // the MouseMove event handler.
        foreach (ListViewItem item in listView1.Items)
        {
            item.Tag = null;
        }
    }

    // Selects and focuses an item when it is clicked anywhere along 
    // its width. The click must normally be on the parent item text.
    private void listView1_MouseUp(object sender, MouseEventArgs e)
    {
        ListViewItem clickedItem = listView1.GetItemAt(5, e.Y);
        if (clickedItem != null)
        {
            clickedItem.Selected = true;
            clickedItem.Focused = true;
        }
    }

    // Draws the backgrounds for entire ListView items.
    private void listView1_DrawItem(object sender,
        DrawListViewItemEventArgs e)
    {
        if ((e.State & ListViewItemStates.Selected) != 0)
        {
            // Draw the background and focus rectangle for a selected item.
            e.Graphics.FillRectangle(Brushes.Maroon, e.Bounds);
            e.DrawFocusRectangle();
        }
        else
        {
            // Draw the background for an unselected item.
            using (LinearGradientBrush brush =
                new LinearGradientBrush(e.Bounds, Color.Orange,
                Color.Maroon, LinearGradientMode.Horizontal))
            {
                e.Graphics.FillRectangle(brush, e.Bounds);
            }
        }

        // Draw the item text for views other than the Details view.
        if (listView1.View != View.Details)
        {
            e.DrawText();
        }
    }

    // Draws subitem text and applies content-based formatting.
    private void listView1_DrawSubItem(object sender,
        DrawListViewSubItemEventArgs e)
    {
        TextFormatFlags flags = TextFormatFlags.Left;

        using (StringFormat sf = new StringFormat())
        {
            // Store the column text alignment, letting it default
            // to Left if it has not been set to Center or Right.
            switch (e.Header.TextAlign)
            {
                case HorizontalAlignment.Center:
                    sf.Alignment = StringAlignment.Center;
                    flags = TextFormatFlags.HorizontalCenter;
                    break;
                case HorizontalAlignment.Right:
                    sf.Alignment = StringAlignment.Far;
                    flags = TextFormatFlags.Right;
                    break;
            }

            // Draw the text and background for a subitem with a 
            // negative value. 
            double subItemValue;
            if (e.ColumnIndex > 0 && Double.TryParse(
                e.SubItem.Text, NumberStyles.Currency,
                NumberFormatInfo.CurrentInfo, out subItemValue) &&
                subItemValue < 0)
            {
                // Unless the item is selected, draw the standard 
                // background to make it stand out from the gradient.
                if ((e.ItemState & ListViewItemStates.Selected) == 0)
                {
                    e.DrawBackground();
                }

                // Draw the subitem text in red to highlight it. 
                e.Graphics.DrawString(e.SubItem.Text,
                    listView1.Font, Brushes.Red, e.Bounds, sf);

                return;
            }

            // Draw normal text for a subitem with a nonnegative 
            // or nonnumerical value.
            e.DrawText(flags);
        }
    }

    // Draws column headers.
    private void listView1_DrawColumnHeader(object sender,
        DrawListViewColumnHeaderEventArgs e)
    {
        using (StringFormat sf = new StringFormat())
        {
            // Store the column text alignment, letting it default
            // to Left if it has not been set to Center or Right.
            switch (e.Header.TextAlign)
            {
                case HorizontalAlignment.Center:
                    sf.Alignment = StringAlignment.Center;
                    break;
                case HorizontalAlignment.Right:
                    sf.Alignment = StringAlignment.Far;
                    break;
            }

            // Draw the standard header background.
            e.DrawBackground();

            // Draw the header text.
            using (Font headerFont =
                        new Font("Helvetica", 10, FontStyle.Bold))
            {
                e.Graphics.DrawString(e.Header.Text, headerFont,
                    Brushes.Black, e.Bounds, sf);
            }
        }
        return;
    }

    // Forces each row to repaint itself the first time the mouse moves over 
    // it, compensating for an extra DrawItem event sent by the wrapped 
    // Win32 control.
    private void listView1_MouseMove(object sender, MouseEventArgs e)
    {
        ListViewItem item = listView1.GetItemAt(e.X, e.Y);
        if (item != null && item.Tag == null)
        {
            listView1.Invalidate(item.Bounds);
            item.Tag = "tagged";
        }
    }

}

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

using namespace System;
using namespace System::Drawing;
using namespace System::Drawing::Drawing2D;
using namespace System::Globalization;
using namespace System::Windows::Forms;

public ref class ListViewOwnerDraw: public Form
{
private:
   ListView^ listView1;
   System::Windows::Forms::ContextMenu^ contextMenu1;

public:
   ListViewOwnerDraw()
   {
      listView1 = gcnew ListView;
      contextMenu1 = gcnew System::Windows::Forms::ContextMenu;

      // Initialize the ListView control.
      listView1->BackColor = Color::Black;
      listView1->ForeColor = Color::White;
      listView1->Dock = DockStyle::Fill;
      listView1->View = View::Details;
      listView1->FullRowSelect = true;

      // Add columns to the ListView control.
      listView1->Columns->Add( "Name", 72, HorizontalAlignment::Center );
      listView1->Columns->Add( "First", 72, HorizontalAlignment::Center );
      listView1->Columns->Add( "Second", 72, HorizontalAlignment::Center );
      listView1->Columns->Add( "Third", 72, HorizontalAlignment::Center );

      // Create items and add them to the ListView control.
      array<String^>^temp0 = {"One","20","30","-40"};
      ListViewItem^ listViewItem1 = gcnew ListViewItem( temp0,-1 );
      array<String^>^temp1 = {"Two","-250","145","37"};
      ListViewItem^ listViewItem2 = gcnew ListViewItem( temp1,-1 );
      array<String^>^temp2 = {"Three","200","800","-1,001"};
      ListViewItem^ listViewItem3 = gcnew ListViewItem( temp2,-1 );
      array<String^>^temp3 = {"Four","not available","-2","100"};
      ListViewItem^ listViewItem4 = gcnew ListViewItem( temp3,-1 );
      array<ListViewItem^>^temp4 = {listViewItem1,listViewItem2,listViewItem3,listViewItem4};
      listView1->Items->AddRange( temp4 );

      // Initialize the shortcut menu and 
      // assign it to the ListView control.
      contextMenu1->MenuItems->Add( "List", gcnew EventHandler( this, &ListViewOwnerDraw::menuItemList_Click ) );
      contextMenu1->MenuItems->Add( "Details", gcnew EventHandler( this, &ListViewOwnerDraw::menuItemDetails_Click ) );
      listView1->ContextMenu = contextMenu1;

      // Configure the ListView control for owner-draw and add 
      // handlers for the owner-draw events.
      listView1->OwnerDraw = true;
      listView1->DrawItem += gcnew DrawListViewItemEventHandler( this, &ListViewOwnerDraw::listView1_DrawItem );
      listView1->DrawSubItem += gcnew DrawListViewSubItemEventHandler( this, &ListViewOwnerDraw::listView1_DrawSubItem );
      listView1->DrawColumnHeader += gcnew DrawListViewColumnHeaderEventHandler( this, &ListViewOwnerDraw::listView1_DrawColumnHeader );

      //listView1.MouseMove += gcnew MouseEventHandler(&ListViewOwnerDraw::listView1_MouseMove);
      // Add a handler for the MouseUp event so an item can be 
      // selected by clicking anywhere along its width.
      listView1->MouseUp += gcnew MouseEventHandler( this, &ListViewOwnerDraw::listView1_MouseUp );

      // Initialize the form and add the ListView control to it.
      this->ClientSize = System::Drawing::Size( 292, 79 );
      this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::FixedSingle;
      this->MaximizeBox = false;
      this->Text = "ListView OwnerDraw Example";
      this->Controls->Add( listView1 );
   }

   // Clean up any resources being used.        
public:
   ~ListViewOwnerDraw()
   {
      if ( contextMenu1 != nullptr )
      {
         delete contextMenu1;
      }
   }

private:

   // Sets the ListView control to the List view.
   void menuItemList_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      listView1->View = View::List;
   }

   // Sets the ListView control to the Details view.
   void menuItemDetails_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      listView1->View = View::Details;
   }

   // Selects and focuses an item when it is clicked anywhere along 
   // its width. The click must normally be on the parent item text.
   void listView1_MouseUp( Object^ /*sender*/, MouseEventArgs^ e )
   {
      ListViewItem^ clickedItem = listView1->GetItemAt( 5, e->Y );
      if ( clickedItem != nullptr )
      {
         clickedItem->Selected = true;
         clickedItem->Focused = true;
      }
   }

   // Draws the backgrounds for entire ListView items.
private:
   void listView1_DrawItem( Object^ /*sender*/, DrawListViewItemEventArgs^ e )
   {
      if ( (e->State & ListViewItemStates::Selected) != (ListViewItemStates)0 )
      {
         // Draw the background for a selected item.
         e->Graphics->FillRectangle( Brushes::Maroon, e->Bounds );
         e->DrawFocusRectangle();
      }
      else
      {
         // Draw the background for an unselected item.
         LinearGradientBrush^ myBrush = gcnew LinearGradientBrush( e->Bounds,Color::Orange,Color::Maroon,LinearGradientMode::Horizontal );
         try
         {
            e->Graphics->FillRectangle( myBrush, e->Bounds );
         }
         finally
         {
            if ( myBrush )
               delete (IDisposable^)myBrush;
         }
      }

      if ( listView1->View != View::Details )
      {
         e->DrawText();
      }
   }

   // Draws subitem text and applies content-based formatting.
private:
   void listView1_DrawSubItem( Object^ /*sender*/, DrawListViewSubItemEventArgs^ e )
   {
      TextFormatFlags flags = TextFormatFlags::Left;
      StringFormat^ sf = gcnew StringFormat;
      try
      {
         // Store the column text alignment, letting it default
         // to Left if it has not been set to Center or Right.
         switch ( e->Header->TextAlign )
         {
            case HorizontalAlignment::Center:
               sf->Alignment = StringAlignment::Center;
               flags = TextFormatFlags::HorizontalCenter;
               break;

            case HorizontalAlignment::Right:
               sf->Alignment = StringAlignment::Far;
               flags = TextFormatFlags::Right;
               break;
         }

         // Draw the text and background for a subitem with a 
         // negative value. 
         double subItemValue;
         if ( e->ColumnIndex > 0 && Double::TryParse( e->SubItem->Text, NumberStyles::Currency, NumberFormatInfo::CurrentInfo, subItemValue ) && subItemValue < 0 )
         {
            // Unless the item is selected, draw the standard 
            // background to make it stand out from the gradient.
            if ( (e->ItemState & ListViewItemStates::Selected) == (ListViewItemStates)0 )
            {
               e->DrawBackground();
            }

            // Draw the subitem text in red to highlight it. 
            e->Graphics->DrawString( e->SubItem->Text, listView1->Font, Brushes::Red, e->Bounds, sf );
            return;
         }

         // Draw normal text for a subitem with a nonnegative 
         // or nonnumerical value.
         e->DrawText( flags );
      }
      finally
      {
         if ( sf )
            delete (IDisposable^)sf;
      }
   }

   // Draws column headers.
private:
   void listView1_DrawColumnHeader( Object^ /*sender*/, DrawListViewColumnHeaderEventArgs^ e )
   {
      StringFormat^ sf = gcnew StringFormat;
      try
      {
         // Store the column text alignment, letting it default
         // to Left if it has not been set to Center or Right.
         switch ( e->Header->TextAlign )
         {
            case HorizontalAlignment::Center:
               sf->Alignment = StringAlignment::Center;
               break;

            case HorizontalAlignment::Right:
               sf->Alignment = StringAlignment::Far;
               break;
         }

         // Draw the standard header background.
         e->DrawBackground();

         // Draw the header text.
         System::Drawing::Font^ headerFont = gcnew System::Drawing::Font( "Helvetica",10,FontStyle::Bold );
         try
         {
            e->Graphics->DrawString( e->Header->Text, headerFont, Brushes::Black, e->Bounds, sf );
         }
         finally
         {
            if ( headerFont )
               delete (IDisposable^)headerFont;
         }
      }
      finally
      {
         if ( sf )
            delete (IDisposable^)sf;
      }

      return;
   }

   // Forces the row the mouse is on to repaint itself. 
   void listView1_MouseMove( Object^ /*sender*/, MouseEventArgs^ e )
   {
      ListViewItem^ item = listView1->GetItemAt( e->X, e->Y );
      if ( item != nullptr )
      {
         listView1->Invalidate( item->Bounds );
      }
   }
};

[STAThread]
int main()
{
   Application::Run( gcnew ListViewOwnerDraw );
}

import System.*;
import System.Drawing.*;
import System.Drawing.Drawing2D.*;
import System.Globalization.*;
import System.Windows.Forms.*;

public class ListViewOwnerDraw extends Form
{
    private ListView myListView;
    private ContextMenu myContextMenu;

    public ListViewOwnerDraw()
    {
        // Create and initialize the ListView control.
        myListView = new ListView();
        myListView.set_BackColor(Color.get_Black());
        myListView.set_ForeColor(Color.get_White());
        myListView.set_Dock(DockStyle.Fill);
        myListView.set_View(View.Details);

        // Add columns to the ListView control.
        myListView.get_Columns().Add("Name", 72, HorizontalAlignment.Center);
        myListView.get_Columns().Add("First", 72, HorizontalAlignment.Center);
        myListView.get_Columns().Add("Second", 72, HorizontalAlignment.Center);
        myListView.get_Columns().Add("Third", 72, HorizontalAlignment.Center);

        // Create items and add them to the ListView control.
        ListViewItem listViewItem1 = new ListViewItem(new String[] 
            { "One", "20", "30", "-40" }, -1);
        ListViewItem listViewItem2 = new ListViewItem(new String[] 
            { "Two", "-250", "145", "37" }, -1);
        ListViewItem listViewItem3 = new ListViewItem(new String[] 
            { "Three", "200", "800", "-1,001" }, -1);
        ListViewItem listViewItem4 = new ListViewItem(new String[] 
            { "Four", "not available", "-2", "100" }, -1);
        myListView.get_Items().AddRange(new ListViewItem[] { listViewItem1, 
            listViewItem2, listViewItem3, listViewItem4 });

        // Create a shortcut menu for changing views and 
        // assign it to the ListView control.
        myContextMenu = new ContextMenu();
        myContextMenu.get_MenuItems().Add("List", 
            new EventHandler(menuItemList_Click));
        myContextMenu.get_MenuItems().Add("Details", 
            new EventHandler(menuItemDetails_Click));
        myListView.set_ContextMenu(myContextMenu);

        // Configure the ListView control for owner-draw and add 
        // handlers for the owner-draw events.
        myListView.set_OwnerDraw(true);
        myListView.add_DrawItem(new DrawListViewItemEventHandler(
            myListView_DrawItem));
        myListView.add_DrawSubItem(new DrawListViewSubItemEventHandler(
            myListView_DrawSubItem));

        // Add a handler for the MouseUp event so an item can be 
        // selected by clicking anywhere along its width.
        myListView.add_MouseUp(new MouseEventHandler(myListView_MouseUp));

        // Initialize the form and add the ListView control to it.
        this.set_ClientSize(new Size(292, 79));
        this.set_FormBorderStyle(get_FormBorderStyle().FixedSingle);
        this.set_MaximizeBox(false);
        this.set_Text("ListView OwnerDraw Example");
        this.get_Controls().Add(myListView);
    } //ListViewOwnerDraw

    // Clean up any resources being used.        
    protected void Dispose(boolean disposing)
    {
        if (disposing) {
            myContextMenu.Dispose();
        }
        super.Dispose(disposing);
    } //Dispose

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

    // Sets the ListView control to the List view.
    private void menuItemList_Click(Object sender, EventArgs e)
    {
        myListView.set_View(View.List);
    } //menuItemList_Click

    // Sets the ListView control to the Details view.
    private void menuItemDetails_Click(Object sender, EventArgs e)
    {
        myListView.set_View(View.Details);
    } //menuItemDetails_Click

    // Selects and focuses an item when it is clicked anywhere along 
    // its width. The click must normally be on the parent item text.
    private void myListView_MouseUp(Object sender, MouseEventArgs e)
    {
        ListViewItem clickedItem = myListView.GetItemAt(5, e.get_Y());
        if (clickedItem != null) {
            clickedItem.set_Selected(true);
            clickedItem.set_Focused(true);
        }
    } //myListView_MouseUp

    // Draws the backgrounds for the column header row and for entire
    // ListView items.
    private void myListView_DrawItem(Object sender, DrawListViewItemEventArgs e)
    {
        // Draw the background for the column header row.
        if (e.get_ItemIndex() == -1) {
            e.get_Item().set_BackColor(Color.get_Black());
            e.DrawBackground();
        }
        // Draw the background for a selected item.
        else {
            if (Convert.ToInt32((e.get_State() & ListViewItemStates.Selected))
                != 0) {
                e.get_Graphics().FillRectangle(Brushes.get_Maroon(),
                    e.get_Bounds());
                e.DrawFocusRectangle();
            }
            // Draw the background for an unselected item.
            else {
                LinearGradientBrush myBrush = new LinearGradientBrush(
                    e.get_Bounds(), Color.get_Orange(), Color.get_Maroon(),
                    LinearGradientMode.Horizontal);
                try {
                    e.get_Graphics().FillRectangle(myBrush, e.get_Bounds());
                }
                finally {
                    myBrush.Dispose();
                }    
            }
        }
        // Draw the item text for views other than the Details view.
        if (!(((ListView)sender).get_View().Equals(View.Details))) {
            e.DrawText();
        }
    } //myListView_DrawItem

    // Draws subitem text and applies content-based formatting.
    private void myListView_DrawSubItem(Object sender,
        DrawListViewSubItemEventArgs e)
    {
        TextFormatFlags flags = TextFormatFlags.Left;
        StringFormat sf = new StringFormat();
        try {
            // Store the column text alignment, letting it default
            // to Left if it has not been set to Center or Right.
            if (e.get_Header().get_TextAlign().
                Equals(HorizontalAlignment.Center)) {

                sf.set_Alignment(StringAlignment.Center);
                flags = TextFormatFlags.HorizontalCenter;
            }
            else {
                if (e.get_Header().get_TextAlign().
                    Equals(HorizontalAlignment.Right)) {

                    sf.set_Alignment(StringAlignment.Far);
                    flags = TextFormatFlags.Right;
                }
            }
            // Draw the text for a column header.
            if (e.get_ItemIndex() == -1) {
                Font myFont = new Font("Helvetica", 12, FontStyle.Bold);
                try {
                    e.get_Graphics().DrawString(e.get_Item().get_Text(), 
                        myFont, Brushes.get_White(), 
                        new PointF((float)e.get_Bounds().get_X(), 
                        (float)e.get_Bounds().get_Y()), sf);
                }
                finally {
                    myFont.Dispose();
                }
                return;
            }

            // Draw the text and background for a subitem with a 
            // negative value. 
            double subItemValue = 0;
            if (e.get_ColumnIndex() > 0 && System.Double.TryParse(
                e.get_Item().get_SubItems().get_Item(e.get_ColumnIndex()).
                get_Text(), NumberStyles.Currency, 
                NumberFormatInfo.get_CurrentInfo(), subItemValue) 
                && subItemValue < 0) {

                // Unless the item is selected, draw the standard 
                // background to make it stand out from the gradient.
                if (Convert.ToInt32(e.get_ItemState() 
                    & ListViewItemStates.Selected) == 0) {
                    e.DrawBackground();
                }
                // Draw the subitem text in red to highlight it. 
                e.get_Graphics().DrawString(e.get_Item().get_SubItems().
                    get_Item(e.get_ColumnIndex()).get_Text(), 
                    ((ListView)sender).get_Font(), Brushes.get_Red(), 
                    RectangleF.op_Implicit(e.get_Bounds()), sf);

                return;
            }
            // Draw normal text for a subitem with a nonnegative 
            // or nonnumerical value.
            e.DrawText(flags);
        }
        finally {
            sf.Dispose();
        }
    } //myListView_DrawSubItem
} //ListViewOwnerDraw