Control.FindForm メソッド

.NET Framework クラス ライブラリ リファレンス

Control.FindForm メソッド

コントロールがあるフォームを取得します。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public Function FindForm As
 Form

Visual Basic (使用法)

Dim instance As Control
Dim returnValue As Form

returnValue = instance.FindForm

C#

public Form FindForm ()

C++

public:
Form^ FindForm ()

J#

public Form FindForm ()

JScript

public function FindForm () : Form

戻り値
コントロールがある Form。

解説

コントロールの Parent プロパティ値は、FindForm メソッドによって返された Form と同じではない場合があります。たとえば、RadioButton コントロールが GroupBox コントロール内に格納されていて、GroupBox が Form 上にある場合、RadioButton コントロールの Parent は GroupBox で、GroupBox コントロールの Parent は Form です。

使用例

指定したボタンを含んだフォームを検索するコード例を次に示します。

Visual Basic

' This example uses the Parent property and the Find method of Control
 to set
' properties on the parent control of a Button and its Form. The example
 assumes
' that a Button control named button1 is located within a GroupBox control.
 The 
' example also assumes that the Click event of the Button control is
 connected to
' the event handler method defined in the example.
Private Sub button1_Click(sender As
 Object, e As System.EventArgs) Handles
 button1.Click
   ' Get the control the Button control is located in. In this case
 a GroupBox.
   Dim control As Control = button1.Parent
   ' Set the text and backcolor of the parent control.
   control.Text = "My Groupbox"
   control.BackColor = Color.Blue
   ' Get the form that the Button control is contained within.
   Dim myForm As Form = button1.FindForm()
   ' Set the text and color of the form containing the Button.
   myForm.Text = "The Form of My Control"
   myForm.BackColor = Color.Red
End Sub

C#

// This example uses the Parent property and the Find method of Control
 to set
// properties on the parent control of a Button and its Form. The example
 assumes
// that a Button control named button1 is located within a GroupBox
 control. The 
// example also assumes that the Click event of the Button control is
 connected to
// the event handler method defined in the example.
private void button1_Click(object sender, System.EventArgs
 e)
{
   // Get the control the Button control is located in. In this case
 a GroupBox.
   Control control = button1.Parent;
   // Set the text and backcolor of the parent control.
   control.Text = "My Groupbox";
   control.BackColor = Color.Blue;
   // Get the form that the Button control is contained within.
   Form myForm = button1.FindForm();
   // Set the text and color of the form containing the Button.
   myForm.Text = "The Form of My Control";
   myForm.BackColor = Color.Red;
}

C++

   // This example uses the Parent property and the Find method of Control
 to set
   // properties on the parent control of a Button and its Form. The example
 assumes
   // that a Button control named button1 is located within a GroupBox
 control. The 
   // example also assumes that the Click event of the Button control is
 connected to
   // the event handler method defined in the example.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^
 /*e*/ )
   {
      // Get the control the Button control is located in. In this case
 a GroupBox.
      Control^ control = button1->Parent;
      
      // Set the text and backcolor of the parent control.
      control->Text = "My Groupbox";
      control->BackColor = Color::Blue;
      
      // Get the form that the Button control is contained within.
      Form^ myForm = button1->FindForm();
      
      // Set the text and color of the form containing the Button.
      myForm->Text = "The Form of My Control";
      myForm->BackColor = Color::Red;
   }

J#

// This example uses the Parent property and the Find method of Control
 to 
// set properties on the parent control of a Button and its Form. The
 
// example assumes that a Button control named button1 is located within
 a 
// GroupBox control. The example also assumes that the Click event of
 the 
// Button control is connected to the event handler method defined in
 the 
// example.
private void button1_Click(Object sender, System.EventArgs
 e)
{
    // Get the control the Button control is located in. 
    // In this case a GroupBox.
    Control control = button1.get_Parent();

    // Set the text and backcolor of the parent control.
    control.set_Text("My Groupbox");
    control.set_BackColor(Color.get_Blue());

    // Get the form that the Button control is contained within.
    Form myForm = button1.FindForm();

    // Set the text and color of the form containing the Button.
    myForm.set_Text("The Form of My Control");
    myForm.set_BackColor(Color.get_Red());
} //button1_Click

.NET Framework のセキュリティ

• UIPermission  (すべてのウィンドウでこのメソッドを呼び出すために必要なアクセス許可)。UIPermissionWindow の AllWindows 値 (関連する列挙体)

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
Control クラス
Control メンバ
System.Windows.Forms 名前空間
GetTopLevel
Form