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Control.ControlCollection Class

Represents a collection of Control objects.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

[ComVisibleAttribute(false)] 
public class ControlCollection : ArrangedElementCollection, IList, ICollection, IEnumerable, 
	ICloneable
/** @attribute ComVisibleAttribute(false) */ 
public class ControlCollection extends ArrangedElementCollection implements IList, ICollection, 
	IEnumerable, ICloneable
ComVisibleAttribute(false) 
public class ControlCollection extends ArrangedElementCollection implements IList, ICollection, 
	IEnumerable, ICloneable
Not applicable.

The Add, Remove, and RemoveAt methods enable you to add and remove individual controls from the collection. You can also use the AddRange or Clear methods to add or remove all the controls from the collection.

You can determine if a Control is a member of the collection by passing the control into the Contains method. To get the index value of the location of a Control in the collection, pass the control into the IndexOf method. The collection can be copied into an array by calling the CopyTo method.

The following code example removes a Control from the Control.ControlCollection of the derived class Panel if it is a member of the collection. The example requires that you have created a Panel, a Button, and at least one RadioButton control on a Form. The RadioButton controls are added to the Panel control, and the Panel control added to the Form. When the button is clicked, the radio button named radioButton2 is removed from the Control.ControlCollection.

// Remove the RadioButton control if it exists.
private void removeButton_Click(object sender, System.EventArgs e)
{
   if(panel1.Controls.Contains(removeButton))
   {
      panel1.Controls.Remove(removeButton);
   }
}

// Remove the RadioButton control if it exists.
private void removeButton_Click(Object sender, System.EventArgs e)
{
    if (panel1.get_Controls().Contains(removeButton)) {
        panel1.get_Controls().Remove(removeButton);
    }
} //removeButton_Click

System.Object
   System.Windows.Forms.Layout.ArrangedElementCollection
    System.Windows.Forms.Control.ControlCollection
       Derived Classes

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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