BindingSource.Add(Object) BindingSource.Add(Object) BindingSource.Add(Object) BindingSource.Add(Object) Method

Definición

Agrega un elemento existente a la lista interna.Adds an existing item to the internal list.

public:
 virtual int Add(System::Object ^ value);
public virtual int Add (object value);
abstract member Add : obj -> int
override this.Add : obj -> int
Public Overridable Function Add (value As Object) As Integer

Parámetros

value
Object Object Object Object

Object que se debe agregar a la lista interna.An Object to be added to the internal list.

Devoluciones

El índice de base cero en el que se agregó value a la lista subyacente, representado por la propiedad List.The zero-based index at which value was added to the underlying list represented by the List property.

Implementaciones

Excepciones

value tiene un tipo distinto del de los elementos existentes en la lista subyacente.value differs in type from the existing items in the underlying list.

Ejemplos

En el ejemplo de código siguiente se usa Add el método.The following code example how to use the Add method. Para ejecutar este ejemplo, pegue el código en un Windows Form y llame PopulateBindingSourceWithFonts al método desde el constructor del formulario.To run this example, paste the code into a Windows Form, and call the PopulateBindingSourceWithFonts method from the form's constructor.

  public BindingSource bindingSource1 = new BindingSource();
  TextBox box1 = new TextBox();

  private void PopulateBindingSourceWithFonts()
  {
      bindingSource1.CurrentChanged += new EventHandler(bindingSource1_CurrentChanged);
      bindingSource1.Add(new Font(FontFamily.Families[2], 8.0F));
      bindingSource1.Add(new Font(FontFamily.Families[4], 9.0F));
      bindingSource1.Add(new Font(FontFamily.Families[6], 10.0F));
      bindingSource1.Add(new Font(FontFamily.Families[8], 11.0F));
      bindingSource1.Add(new Font(FontFamily.Families[10], 12.0F));
      DataGridView view1 = new DataGridView();
      view1.DataSource = bindingSource1;
      view1.AutoGenerateColumns = true;
      view1.Dock = DockStyle.Top;
      this.Controls.Add(view1);
      box1.Dock = DockStyle.Bottom;
      box1.Text = "Sample Text";
      this.Controls.Add(box1);
      box1.DataBindings.Add("Text", bindingSource1, "Name");
      view1.Columns[7].DisplayIndex = 0;
      
  }

  void bindingSource1_CurrentChanged(object sender, EventArgs e)
  {
      box1.Font = (Font)bindingSource1.Current;
  }
 Private WithEvents bindingSource1 As New BindingSource()
 Private box1 As New TextBox()

 
 Private Sub PopulateBindingSourceWithFonts()
   
     bindingSource1.Add(New Font(FontFamily.Families(2), 8.0F))
     bindingSource1.Add(New Font(FontFamily.Families(4), 9.0F))
     bindingSource1.Add(New Font(FontFamily.Families(6), 10.0F))
     bindingSource1.Add(New Font(FontFamily.Families(8), 11.0F))
     bindingSource1.Add(New Font(FontFamily.Families(10), 12.0F))
     Dim view1 As New DataGridView()
     view1.DataSource = bindingSource1
     view1.AutoGenerateColumns = True
     view1.Dock = DockStyle.Top
     Me.Controls.Add(view1)
     box1.Dock = DockStyle.Bottom
     box1.Text = "Sample Text"
     Me.Controls.Add(box1)
     view1.Columns("Name").DisplayIndex = 0
     box1.DataBindings.Add("Text", bindingSource1, "Name")
     
 End Sub
  
 Sub bindingSource1_CurrentChanged(ByVal sender As Object, ByVal e As EventArgs) _
     Handles bindingSource1.CurrentChanged
     box1.Font = CType(bindingSource1.Current, Font)
 End Sub

Comentarios

El Add método hace referencia a la llamada al método de Add la lista subyacente.The Add method refers the call to the underlying list's Add method.

La lista interna debe contener tipos homogéneos.The internal list must contain homogenous types. Si aún DataSource no se ha establecido la propiedad, el primer objeto agregado a la lista define el tipo de la lista.If the DataSource property has not already been set, then the first object added to the list defines the type for the list.

Este método genera el ListChanged evento.This method raises the ListChanged event.

Se aplica a

Consulte también: