DataGridViewColumnCollection.Add Metodo

public:
 virtual int Add(System::Windows::Forms::DataGridViewColumn ^ dataGridViewColumn);

public virtual int Add (System.Windows.Forms.DataGridViewColumn dataGridViewColumn);

abstract member Add : System.Windows.Forms.DataGridViewColumn -> int
override this.Add : System.Windows.Forms.DataGridViewColumn -> int

Public Overridable Function Add (dataGridViewColumn As DataGridViewColumn) As Integer

Parametri

Restituisce

Indice della colonna.

Eccezioni

Esempio

Nell'esempio di codice seguente viene illustrato l'uso di questo metodo.

private DataGridView dataGridView1 = new DataGridView();

private void AddColorColumn()
{
    DataGridViewComboBoxColumn comboBoxColumn =
        new DataGridViewComboBoxColumn();
    comboBoxColumn.Items.AddRange(
        Color.Red, Color.Yellow, Color.Green, Color.Blue);
    comboBoxColumn.ValueType = typeof(Color);
    dataGridView1.Columns.Add(comboBoxColumn);
    dataGridView1.EditingControlShowing +=
        new DataGridViewEditingControlShowingEventHandler(
        dataGridView1_EditingControlShowing);
}

private void dataGridView1_EditingControlShowing(object sender,
    DataGridViewEditingControlShowingEventArgs e)
{
    ComboBox combo = e.Control as ComboBox;
    if (combo != null)
    {
        // Remove an existing event-handler, if present, to avoid 
        // adding multiple handlers when the editing control is reused.
        combo.SelectedIndexChanged -=
            new EventHandler(ComboBox_SelectedIndexChanged);

        // Add the event handler. 
        combo.SelectedIndexChanged +=
            new EventHandler(ComboBox_SelectedIndexChanged);
    }
}

private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
    ((ComboBox)sender).BackColor = (Color)((ComboBox)sender).SelectedItem;
}

Private WithEvents dataGridView1 As New DataGridView()

Private Sub AddColorColumn()

    Dim comboBoxColumn As New DataGridViewComboBoxColumn()
    comboBoxColumn.Items.AddRange( _
        Color.Red, Color.Yellow, Color.Green, Color.Blue)
    comboBoxColumn.ValueType = GetType(Color)
    dataGridView1.Columns.Add(comboBoxColumn)

End Sub

Private Sub dataGridView1_EditingControlShowing(ByVal sender As Object, _
    ByVal e As DataGridViewEditingControlShowingEventArgs) _
    Handles dataGridView1.EditingControlShowing

    Dim combo As ComboBox = CType(e.Control, ComboBox)
    If (combo IsNot Nothing) Then

        ' Remove an existing event-handler, if present, to avoid 
        ' adding multiple handlers when the editing control is reused.
        RemoveHandler combo.SelectedIndexChanged, _
            New EventHandler(AddressOf ComboBox_SelectedIndexChanged)

        ' Add the event handler. 
        AddHandler combo.SelectedIndexChanged, _
            New EventHandler(AddressOf ComboBox_SelectedIndexChanged)

    End If

End Sub

Private Sub ComboBox_SelectedIndexChanged( _
    ByVal sender As Object, ByVal e As EventArgs)

    Dim comboBox1 As ComboBox = CType(sender, ComboBox)
    comboBox1.BackColor = _
        CType(CType(sender, ComboBox).SelectedItem, Color)

End Sub

Vedi anche

• DataGridView
• DataGridViewColumn

public:
 virtual int Add(System::String ^ columnName, System::String ^ headerText);

public virtual int Add (string columnName, string headerText);

public virtual int Add (string? columnName, string? headerText);

abstract member Add : string * string -> int
override this.Add : string * string -> int

Public Overridable Function Add (columnName As String, headerText As String) As Integer

Parametri

Restituisce

Indice della colonna.

Eccezioni

Commenti

I columnName parametri e headerText sono correlati rispettivamente alle Name proprietà e HeaderText .

Vedi anche

• DataGridView
• DataGridViewColumn