DataGridViewColumnCollection Třída

Definice

public ref class DataGridViewColumnCollection : System::Windows::Forms::BaseCollection, System::Collections::IList

[System.ComponentModel.ListBindable(false)]
public class DataGridViewColumnCollection : System.Windows.Forms.BaseCollection, System.Collections.IList

[<System.ComponentModel.ListBindable(false)>]
type DataGridViewColumnCollection = class
    inherit BaseCollection
    interface IList
    interface ICollection
    interface IEnumerable

Public Class DataGridViewColumnCollection
Inherits BaseCollection
Implements IList

Dědičnost

Object

MarshalByRefObject

BaseCollection

DataGridViewColumnCollection

Atributy

ListBindableAttribute

Implementuje

ICollection IEnumerable IList

Příklady

Následující příklad kódu znázorňuje použití tohoto typu.

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

Poznámky

Instanci této třídy můžete načíst prostřednictvím Columns vlastnosti DataGridView ovládacího prvku. Kolekce udržuje odkaz na ovládací prvek prostřednictvím DataGridView vlastnosti .

Konstruktory

Vlastnosti

Metody

Událost

Explicitní implementace rozhraní

Metody rozšíření

Platí pro

Viz také

• DataGridView
• Columns
• DataGridViewColumn