ControlBindingsCollection.Item[String] Propiedad

Definición

Espacio de nombres:

System.Windows.Forms

Ensamblado:

System.Windows.Forms.dll

Obtiene el objeto Binding que especifica el nombre de propiedad del control.

public:
 property System::Windows::Forms::Binding ^ default[System::String ^] { System::Windows::Forms::Binding ^ get(System::String ^ propertyName); };

public System.Windows.Forms.Binding this[string propertyName] { get; }

member this.Item(string) : System.Windows.Forms.Binding

Default Public ReadOnly Property Item(propertyName As String) As Binding

Parámetros

propertyName

String

Nombre de la propiedad del control enlazado a los datos.

Valor de propiedad

Binding

Binding que enlaza la propiedad de control especificada con un origen de datos.

Ejemplos

En el ejemplo de código siguiente se devuelve un valor único Binding de .ControlBindingsCollection

void PrintValue()
{
   ControlBindingsCollection^ myControlBindings;
   myControlBindings = textBox1->DataBindings;
   
   // Get the Binding for the Text property.
   Binding^ myBinding = myControlBindings[ "Text" ];
   
   // Assuming the data source is a DataTable.
   DataRowView^ drv;
   drv = dynamic_cast<DataRowView^>(myBinding->BindingManagerBase->Current);
   
   // Assuming a column named S"custName" exists, print the value.
   Console::WriteLine( drv[ "custName" ] );
}

private void PrintValue()
{
   ControlBindingsCollection myControlBindings;
   myControlBindings = textBox1.DataBindings;

   // Get the Binding for the Text property.
   Binding myBinding = myControlBindings["Text"];

   // Assuming the data source is a DataTable.
   DataRowView drv;
   drv = (DataRowView) myBinding.BindingManagerBase.Current;

   // Assuming a column named "custName" exists, print the value.
   Console.WriteLine(drv["custName"]);
}

Private Sub PrintValue()

   Dim myControlBindings As ControlBindingsCollection = _
   textBox1.DataBindings

   ' Get the Binding for the Text property.
   Dim myBinding As Binding = myControlBindings("Text")

   ' Assuming the data source is a DataTable.
   Dim drv As DataRowView = _
   CType( myBinding.BindingManagerBase.Current, DataRowView)

   ' Assuming a column named "custName" exists, print the value.
   Console.WriteLine(drv("custName"))
End Sub

Comentarios

Si la propiedad especificada no coincide con un enlace de la colección, Item[] devuelve null.