Form.Closed イベント

定義

フォームが閉じたときに発生します。Occurs when the form is closed.

public:
 event EventHandler ^ Closed;
[System.ComponentModel.Browsable(false)]
public event EventHandler Closed;
public event EventHandler Closed;
[<System.ComponentModel.Browsable(false)>]
member this.Closed : EventHandler 
member this.Closed : EventHandler 
Public Custom Event Closed As EventHandler 

イベントの種類

EventHandler
属性

次の例では、、、 SetDesktopLocation 、、およびの各メンバーを使用する方法を示し Closed Load Activated Activate ます。The following example demonstrates how to use the SetDesktopLocation, Closed, Load, Activated, and Activate members. この例を実行するには、という名前のと Form1 という2つのコントロールを含むという名前のフォームに次のコードを貼り付け Button Button1 Label Label1 Label2 ます。To run the example, paste the following code in a form called Form1 containing a Button called Button1 and two Label controls called Label1 and Label2.

static int x = 200;
static int y = 200;
void Button1_Click( System::Object^ sender, System::EventArgs^ e )
{
   
   // Create a new Form1 and set its Visible property to true.
   Form1^ form2 = gcnew Form1;
   form2->Visible = true;
   
   // Set the new form's desktop location so it  
   // appears below and to the right of the current form.
   form2->SetDesktopLocation( x, y );
   x += 30;
   y += 30;
   
   // Keep the current form active by calling the Activate
   // method.
   this->Activate();
   this->Button1->Enabled = false;
}


// Updates the label text to reflect the current values of x 
// and y, which was were incremented in the Button1 control's 
// click event.
void Form1_Activated( Object^ sender, System::EventArgs^ e )
{
   Label1->Text = String::Format( "x: {0} y: {1}", x, y );
   Label2->Text = String::Format( "Number of forms currently open: {0}", count );
}

static int count = 0;
void Form1_Closed( Object^ sender, System::EventArgs^ e )
{
   count -= 1;
}

void Form1_Load( Object^ sender, System::EventArgs^ e )
{
   count += 1;
}
static int x = 200;
static int y = 200;

private void Button1_Click(System.Object sender, 
    System.EventArgs e)
{
    // Create a new Form1 and set its Visible property to true.
    Form1 form2 = new Form1();
    form2.Visible = true;

    // Set the new form's desktop location so it  
    // appears below and to the right of the current form.
    form2.SetDesktopLocation(x, y);
    x += 30;
    y += 30;

    // Keep the current form active by calling the Activate
    // method.
    this.Activate();
    this.Button1.Enabled = false;
}

// Updates the label text to reflect the current values of x 
// and y, which was were incremented in the Button1 control's 
// click event.
private void Form1_Activated(object sender, System.EventArgs e)
{
    Label1.Text = "x: "+x+" y: "+y;
    Label2.Text = "Number of forms currently open: "+count;
}

static int count = 0;

private void Form1_Closed(object sender, System.EventArgs e)
{
    count -= 1;
}

private void Form1_Load(object sender, System.EventArgs e)
{
    count += 1;
}
Shared x As Integer = 200
Shared y As Integer = 200

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    ' Create a new Form1 and set its Visible property to true.
    Dim form2 As New Form1
    form2.Visible = True

    ' Set the new form's desktop location so it appears below and 
    ' to the right of the current form.
    form2.SetDesktopLocation(x, y)
    x += 30
    y += 30

    ' Keep the current form active by calling the Activate method.
    Me.Activate()
    Me.Button1.Enabled = False
End Sub



' Updates the label text to reflect the current values of x and y, 
' which was were incremented in the Button1 control's click event.
Private Sub Form1_Activated(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Activated
    Label1.Text = "x: " & x & " y: " & y
    Label2.Text = "Number of forms currently open: " & count
End Sub

Shared count As Integer = 0

Private Sub Form1_Closed(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Closed
    count -= 1
End Sub

Private Sub Form1_Load(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Load
    count += 1
End Sub

注釈

注意事項

Closedイベントは .NET Framework バージョン2.0 では廃止されてい FormClosed ます。代わりにイベントを使用してください。The Closed event is obsolete in the .NET Framework version 2.0; use the FormClosed event instead.

このイベントは、フォームがユーザーによって、またはフォームのメソッドによって閉じられた後に発生し Close ます。This event occurs after the form has been closed by the user or by the Close method of the form. フォームが終了しないようにするには、イベントを処理 Closing し、 Cancel CancelEventArgs イベントハンドラーに渡されたのプロパティをに設定し true ます。To prevent a form from closing, handle the Closing event and set the Cancel property of the CancelEventArgs passed to your event handler to true.

このイベントを使用して、フォームによって使用されるリソースの解放、フォームに入力された情報の保存、または親フォームの更新などのタスクを実行できます。You can use this event to perform tasks such as freeing resources used by the form and to save information entered in the form or to update its parent form.

注意事項

Form.Closedイベントおよび Form.Closing イベントは、メソッドを呼び出してアプリケーションを終了したときには発生しません Application.ExitThe Form.Closed and Form.Closing events are not raised when the Application.Exit method is called to exit your application. これらのイベントのいずれかで実行する必要がある検証コードがある場合は、 Form.Close メソッドを呼び出す前に、開いているフォームごとにメソッドを呼び出す必要があり Exit ます。If you have validation code in either of these events that must be executed, you should call the Form.Close method for each open form individually before calling the Exit method.

フォームが MDI 親フォームの場合、mdi Closing 親フォームのイベントが発生する前に、すべての mdi 子フォームのイベントが発生し Closing ます。If the form is an MDI parent form, the Closing events of all MDI child forms are raised before the MDI parent form's Closing event is raised. また、mdi Closed 親フォームのイベントが発生する前に、すべての mdi 子フォームのイベントが発生し Closed ます。In addition, the Closed events of all MDI child forms are raised before the Closed event of the MDI parent form is raised.

イベントの処理の詳細については、「処理とイベントの発生」を参照してください。For more information about handling events, see Handling and Raising Events.

適用対象

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