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Form.ControlCollection.Add Method

Adds a control to the form.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public override void Add(
	Control value


Type: System.Windows.Forms.Control
The Control to add to the form.


A multiple document interface (MDI) parent form cannot have controls added to it.

You can use this method to add controls to the form. If you want to add a group of already created controls to the form, use the Control.ControlCollection.AddRange method of the Control.ControlCollection class.

The following code example adds a TextBox and Label control to the control collection of a form. The example requires that a form has been created and named Form1.

public void AddMyControls()
    TextBox textBox1 = new TextBox();
    Label label1 = new Label();

    // Initialize the controls and their bounds.
    label1.Text = "First Name";
    label1.Location = new Point(48,48);
    label1.Size = new Size (104, 16);
    textBox1.Text = "";
    textBox1.Location = new Point(48, 64);
    textBox1.Size = new Size(104,16);

    // Add the TextBox control to the form's control collection.
    // Add the Label control to the form's control collection.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.