ControlBindingsCollection クラス

.NET Framework クラス ライブラリ リファレンス

ControlBindingsCollection クラス

コントロールのデータ連結のコレクションを表します。

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 Class ControlBindingsCollection
    Inherits BindingsCollection

Visual Basic (使用法)

Dim instance As ControlBindingsCollection

C#

public class ControlBindingsCollection : BindingsCollection

C++

public ref class ControlBindingsCollection
 : public BindingsCollection

J#

public class ControlBindingsCollection extends
 BindingsCollection

JScript

public class ControlBindingsCollection extends
 BindingsCollection

解説

単純なデータ連結は、Binding オブジェクトを ControlBindingsCollection に追加することによって実行されます。Control クラスから継承される任意のオブジェクトは、DataBindings プロパティを使用して ControlBindingsCollection にアクセスできます。データ連結をサポートする Windows コントロールの一覧については、Binding クラスのトピックを参照してください。

ControlBindingsCollection は、Add、Clear、Remove など、標準のコレクションのメソッドを格納しています。

ControlBindingsCollection が属しているコントロールを取得するには、Control プロパティを使用します。

使用例

5 つのコントロール (4 つの TextBox コントロールと 1 つの DateTimePicker コントロール) の ControlBindingsCollection に、Binding オブジェクトを追加するコード例を次に示します。ControlBindingsCollection には、Control クラスの DataBindings プロパティを使用してアクセスします。

Visual Basic

Protected Sub BindControls()
    ' Create two Binding objects for the first two TextBox 
    ' controls. The data-bound property for both controls 
    ' is the Text property. The data source is a DataSet 
    ' (ds). The data member is the navigation path: 
    ' TableName.ColumnName. 
    textBox1.DataBindings.Add _
       (New Binding("Text", ds,
 "customers.custName"))
    textBox2.DataBindings.Add _
       (New Binding("Text", ds,
 "customers.custID"))
    
    ' Bind the DateTimePicker control by adding a new Binding. 
    ' The data member of the DateTimePicker is a navigation path:
    ' TableName.RelationName.ColumnName. 
    DateTimePicker1.DataBindings.Add _
       (New Binding("Value", ds,
 "customers.CustToOrders.OrderDate"))
    
    ' Create a new Binding using the DataSet and a 
    ' navigation path(TableName.RelationName.ColumnName).
    ' Add event delegates for the Parse and Format events to 
    ' the Binding object, and add the object to the third 
    ' TextBox control's BindingsCollection. The delegates 
    ' must be added before adding the Binding to the 
    ' collection; otherwise, no formatting occurs until 
    ' the Current object of the BindingManagerBase for 
    ' the data source changes. 
    Dim b As New Binding("Text",
 ds, "customers.custToOrders.OrderAmount")
    AddHandler b.Parse, AddressOf CurrencyStringToDecimal
    AddHandler b.Format, AddressOf DecimalToCurrencyString
    textBox3.DataBindings.Add(b)
    
    ' Bind the fourth TextBox to the Value of the 
    ' DateTimePicker control. This demonstates how one control
    ' can be data-bound to another.
    textBox4.DataBindings.Add("Text", DateTimePicker1,
 "Value")
    
    ' Get the BindingManagerBase for the textBox4 Binding.
    Dim bmText As BindingManagerBase = Me.BindingContext(DateTimePicker1)
    
    ' Print the Type of the BindingManagerBase, which is 
    ' a PropertyManager because the data source
    ' returns only a single property value. 
    Console.WriteLine(bmText.GetType().ToString())
    
    ' Print the count of managed objects, which is one.
    Console.WriteLine(bmText.Count)
    
    ' Get the BindingManagerBase for the Customers table. 
    bmCustomers = Me.BindingContext(ds, "Customers")
    
    ' Print the Type and count of the BindingManagerBase.
    ' Because the data source inherits from IBindingList,
    ' it is a RelatedCurrencyManager (a derived class of
    ' CurrencyManager). 
    Console.WriteLine(bmCustomers.GetType().ToString())
    Console.WriteLine(bmCustomers.Count)
    
    ' Get the BindingManagerBase for the Orders of the current
    ' customer using a navigation path: TableName.RelationName. 
    bmOrders = Me.BindingContext(ds, "customers.CustToOrders")
End Sub    

C#

protected void BindControls()
{
   /* Create two Binding objects for the first two TextBox 
   controls. The data-bound property for both controls 
   is the Text property. The data source is a DataSet 
   (ds). The data member is the navigation path: 
   TableName.ColumnName. */
   textBox1.DataBindings.Add(new Binding
   ("Text", ds, "customers.custName"));
   textBox2.DataBindings.Add(new Binding
   ("Text", ds, "customers.custID"));
      
   /* Bind the DateTimePicker control by adding a new Binding.
 
   The data member of the DateTimePicker is a navigation path:
   TableName.RelationName.ColumnName. */
   DateTimePicker1.DataBindings.Add(new 
   Binding("Value", ds, "customers.CustToOrders.OrderDate"));

   /* Create a new Binding using the DataSet
 and a 
   navigation path(TableName.RelationName.ColumnName).
   Add event delegates for the Parse and Format events to 
   the Binding object, and add the object to the third 
   TextBox control's BindingsCollection. The delegates 
   must be added before adding the Binding to the 
   collection; otherwise, no formatting occurs until 
   the Current object of the BindingManagerBase for 
   the data source changes. */
   Binding b = new Binding
   ("Text", ds, "customers.custToOrders.OrderAmount");
   b.Parse+=new ConvertEventHandler(CurrencyStringToDecimal);
   b.Format+=new ConvertEventHandler(DecimalToCurrencyString);
   textBox3.DataBindings.Add(b);

   /*Bind the fourth TextBox to the Value of the 
   DateTimePicker control. This demonstates how one control
   can be data-bound to another.*/
   textBox4.DataBindings.Add("Text", DateTimePicker1,"Value");

   // Get the BindingManagerBase for the textBox4 Binding.
   BindingManagerBase bmText = this.BindingContext
   [DateTimePicker1];

   /* Print the Type of the BindingManagerBase, which is 
   a PropertyManager because the data source
   returns only a single property value. */
   Console.WriteLine(bmText.GetType().ToString());

   // Print the count of managed objects, which is one.
   Console.WriteLine(bmText.Count);

   // Get the BindingManagerBase for the Customers table. 
   bmCustomers = this.BindingContext [ds, "Customers"];

   /* Print the Type and count of the BindingManagerBase.
   Because the data source inherits from IBindingList,
   it is a RelatedCurrencyManager (a derived class of
   CurrencyManager). */
   Console.WriteLine(bmCustomers.GetType().ToString());
   Console.WriteLine(bmCustomers.Count);
   
   /* Get the BindingManagerBase for the Orders of the current
   customer using a navigation path: TableName.RelationName. */
 
   bmOrders = this.BindingContext[ds, "customers.CustToOrders"];
}

C++

protected:
   void BindControls()
   {
      /* Create two Binding objects for the first two TextBox
 
         controls. The data-bound property for both controls 
         is the Text property. The data source is a DataSet 
         (ds). The data member is the navigation path: 
         TableName.ColumnName. */
      textBox1->DataBindings->Add( gcnew Binding(
         "Text",ds,"customers.custName" ) );
      textBox2->DataBindings->Add( gcnew Binding(
         "Text",ds,"customers.custID" ) );
      
      /* Bind the DateTimePicker control by adding a new Binding.
 
         The data member of the DateTimePicker is a navigation path:
         TableName.RelationName.ColumnName. */
      DateTimePicker1->DataBindings->Add( gcnew Binding(
         "Value",ds,"customers.CustToOrders.OrderDate" ) );
      
      /* Create a new Binding using the DataSet
 and a 
         navigation path(TableName.RelationName.ColumnName).
         Add event delegates for the Parse and Format events to
 
         the Binding object, and add the object to the third 
         TextBox control's BindingsCollection. The delegates 
         must be added before adding the Binding to the 
         collection; otherwise, no formatting occurs until 
         the Current object of the BindingManagerBase for 
         the data source changes. */
      Binding^ b = gcnew Binding(
         "Text",ds,"customers.custToOrders.OrderAmount" );
      b->Parse += gcnew ConvertEventHandler(
         this, &Form1::CurrencyStringToDecimal );
      b->Format += gcnew ConvertEventHandler(
         this, &Form1::DecimalToCurrencyString );
      textBox3->DataBindings->Add( b );
      
      /*Bind the fourth TextBox to the Value of the 
         DateTimePicker control. This demonstates how one control
         can be data-bound to another.*/
      textBox4->DataBindings->Add( "Text", DateTimePicker1, "Value"
 );
      
      // Get the BindingManagerBase for the textBox4 Binding.
      BindingManagerBase^ bmText = this->BindingContext[
         DateTimePicker1 ];
      
      /* Print the Type of the BindingManagerBase, which is 
         a PropertyManager because the data source
         returns only a single property value. */
      Console::WriteLine( bmText->GetType() );
      
      // Print the count of managed objects, which is one.
      Console::WriteLine( bmText->Count );
      
      // Get the BindingManagerBase for the Customers table. 
      bmCustomers = this->BindingContext[ds, "Customers"];
      
      /* Print the Type and count of the BindingManagerBase.
         Because the data source inherits from IBindingList,
         it is a RelatedCurrencyManager (a derived class of
         CurrencyManager). */
      Console::WriteLine( bmCustomers->GetType() );
      Console::WriteLine( bmCustomers->Count );
      
      /* Get the BindingManagerBase for the Orders of the current
         customer using a navigation path: TableName.RelationName.
 */
      bmOrders = this->BindingContext[ds, "customers.CustToOrders"];
   }

J#

protected void BindControls()
{
    /*  Create two Binding objects for the first two TextBox 
        controls. The data-bound property for both controls 
        is the Text property. The data source is a DataSet 
        (ds). The data member is the navigation path: 
        TableName.ColumnName. 
     */
    textBox1.get_DataBindings().
        Add(new Binding("Text", ds, "customers.custName"));
    textBox2.get_DataBindings().
        Add(new Binding("Text", ds, "customers.custID"));

    /*  Bind the DateTimePicker control by adding a new Binding.
 
        The data member of the DateTimePicker is a navigation path:
        TableName.RelationName.ColumnName. 
     */
    dateTimePicker1.get_DataBindings().
        Add(new Binding("Value", ds,"customers.CustToOrders.OrderDate"));

    /*  Create a new Binding using the DataSet
 and a 
        navigation path(TableName.RelationName.ColumnName).
        Add event delegates for the Parse and Format events to
 
        the Binding object, and add the object to the third 
        TextBox control's BindingsCollection. The delegates 
        must be added before adding the Binding to the 
        collection; otherwise, no formatting occurs until 
        the Current object of the BindingManagerBase for 
        the data source changes. 
     */
    Binding b = new Binding("Text", 
        ds, "customers.custToOrders.OrderAmount");

    b.add_Parse(new ConvertEventHandler(CurrencyStringToDecimal));
    b.add_Format(new ConvertEventHandler(DecimalToCurrencyString));
    textBox3.get_DataBindings().Add(b);

    /*  Bind the fourth TextBox to the Value of the 
        DateTimePicker control. This demonstates how one control
        can be data-bound to another.
     */
    textBox4.get_DataBindings().Add("Text", dateTimePicker1, "Value");

    // Get the BindingManagerBase for the textBox4 Binding.
    BindingManagerBase bmText 
        = this.get_BindingContext().get_Item(dateTimePicker1);

    /*  Print the Type of the BindingManagerBase, which is 
        a PropertyManager because the data source
        returns only a single property value. 
     */
    Console.WriteLine(bmText.GetType().ToString());

    // Print the count of managed objects, which is one.
    Console.WriteLine(bmText.get_Count());

    // Get the BindingManagerBase for the Customers table. 
    bmCustomers = this.get_BindingContext().get_Item(ds, "Customers");

    /*  Print the Type and count of the BindingManagerBase.
        Because the data source inherits from IBindingList,
        it is a RelatedCurrencyManager (a derived class of
        CurrencyManager). 
     */
    Console.WriteLine(bmCustomers.GetType().ToString());
    Console.WriteLine(bmCustomers.get_Count());

    /*  Get the BindingManagerBase for the Orders of the current
        customer using a navigation path: TableName.RelationName.
 
     */
    bmOrders 
        = this.get_BindingContext().get_Item(ds, "customers.CustToOrders");
} //BindControls

継承階層

System.Object
   System.MarshalByRefObject
     System.Windows.Forms.BaseCollection
       System.Windows.Forms.BindingsCollection
        System.Windows.Forms.ControlBindingsCollection

スレッド セーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッド セーフです。インスタンス メンバの場合は、スレッド セーフであるとは限りません。

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
.NET Compact Framework
サポート対象 : 2.0、1.0

参照

関連項目
ControlBindingsCollection メンバ
System.Windows.Forms 名前空間