# C1.Win.TouchToolKit.C1Zoom.BeginAddControls ## Content

BeginAddControls Method

BeginAddControls()

Call this method before change child control collection.

Declaration

public void BeginAddControls()

Public Sub BeginAddControls()

Examples

The following code example shows how to use this method.

This code example is part of a larger example provided for the Controls property.

public class GcZoomControlsDemo : Form
{
	private GcZoom _gcZoom1 = new GcZoom();
	private Button _changeChildControlButton;

	public GcZoomControlsDemo()
	{
		InitializeComponent();

		_gcZoom1.Target = this;

		_changeChildControlButton.Click += _changeChildControlButton_Click;
	}

	void _changeChildControlButton_Click(object sender, EventArgs e)
	{
		Button newButton = new Button();
		newButton.Text = "New Button";
		newButton.Location = new Point(100, 100);
		newButton.Size = new Size(this.Size.Width / 2, this.Size.Height / 2);

		_gcZoom1.BeginAddControls();
		_gcZoom1.Controls.Add(newButton);
		_gcZoom1.EndAddControls();
	}

	private void InitializeComponent()
	{
		_changeChildControlButton = new Button();
		_changeChildControlButton.Text = "ChangeChildControl";
		_changeChildControlButton.Location = new Point(20, 190);
		_changeChildControlButton.Size = new Size(120, 25);
		this.Controls.Add(_changeChildControlButton);
	}
}

Public Class GcZoomControlsDemo
	Inherits Form
	Private _gcZoom1 As New GcZoom()
	Private _changeChildControlButton As Button

	Public Sub New()
		InitializeComponent()

		_gcZoom1.Target = Me

		AddHandler _changeChildControlButton.Click, AddressOf _changeChildControlButton_Click
	End Sub

	Private Sub _changeChildControlButton_Click(sender As Object, e As EventArgs)
		Dim newButton As New Button()
		newButton.Text = "New Button"
		newButton.Location = New Point(100, 100)
		newButton.Size = New Size(Me.Size.Width \ 2, Me.Size.Height \ 2)

		_gcZoom1.BeginAddControls()
		_gcZoom1.Controls.Add(newButton)
		_gcZoom1.EndAddControls()
	End Sub

	Private Sub InitializeComponent()
		_changeChildControlButton = New Button()
		_changeChildControlButton.Text = "ChangeChildControl"
		_changeChildControlButton.Location = New Point(20, 190)
		_changeChildControlButton.Size = New Size(120, 25)
		Me.Controls.Add(_changeChildControlButton)
	End Sub
End Class