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

Un Object para agregarse a la lista interna.An Object to be added to the internal list.

Devoluciones

Índice de base cero que value se agregó a la lista subyacente representada por la List propiedad.The zero-based index at which value was added to the underlying list represented by the List property.

Implementaciones

Excepciones

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

Ejemplos

El ejemplo de código siguiente cómo usar el Add método.The following code example how to use the Add method. Para ejecutar este ejemplo, pegue el código en un formulario de Windows y llaman a la PopulateBindingSourceWithFonts 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 a la lista subyacente Add método.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 el DataSource propiedad ya no se ha establecido, a continuación, 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 provoca la ListChanged eventos.This method raises the ListChanged event.

Se aplica a

Consulte también: