ControlBindingsCollection.Item[String] Özellik

Tanım

Ad Alanı:

System.Windows.Forms

Bütünleştirilmiş Kod:

System.Windows.Forms.dll

Kaynak:

ControlBindingsCollection.cs

Denetimin Binding özellik adına göre belirtileni alır.

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

Parametreler

propertyName

String

Veri bağlama denetimindeki özelliğin adı.

Özellik Değeri

Binding

Binding Belirtilen denetim özelliğini bir veri kaynağına bağlayan.

Örnekler

Aşağıdaki kod örneği, bir içinden tek Binding bir ControlBindingsCollectiondöndürür.

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

Açıklamalar

Belirtilen özellik koleksiyondaki bir bağlamayla eşleşmiyorsa döndürür Item[]null.