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

定義

既存の項目を内部リストに追加します。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

パラメーター

value
Object Object Object Object

内部リストに追加する ObjectAn Object to be added to the internal list.

戻り値

List プロパティで表される基底のリストに value を追加する場所の 0 から始まるインデックス。The zero-based index at which value was added to the underlying list represented by the List property.

実装

例外

value の型が、基底のリストに含まれる既存の項目と異なっています。value differs in type from the existing items in the underlying list.

次のコード例は、メソッドのAdd使用方法を示しています。The following code example how to use the Add method. この例を実行するには、Windows フォームにコードを貼り付け、 PopulateBindingSourceWithFontsフォームのコンストラクターからメソッドを呼び出します。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

注釈

メソッドAddは、基になるリストのAddメソッドへの呼び出しを参照します。The Add method refers the call to the underlying list's Add method.

内部リストには、同種の型が含まれている必要があります。The internal list must contain homogenous types. DataSourceプロパティがまだ設定されていない場合は、リストに追加された最初のオブジェクトによってリストの型が定義されます。If the DataSource property has not already been set, then the first object added to the list defines the type for the list.

このメソッドは、 ListChangedイベントを発生させます。This method raises the ListChanged event.

適用対象

こちらもご覧ください