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Control.ControlCollection.RemoveAt(Int32) Method

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Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Source:
Control.ControlCollection.cs
Source:
Control.ControlCollection.cs
Source:
Control.ControlCollection.cs

Removes a control from the control collection at the specified indexed location.

public:
 virtual void RemoveAt(int index);
public void RemoveAt (int index);
abstract member RemoveAt : int -> unit
override this.RemoveAt : int -> unit
Public Sub RemoveAt (index As Integer)

Parameters

index
Int32

The index value of the Control to remove.

Implements

RemoveAt(Int32)

Examples

The following code example removes the first Control in the Control.ControlCollection of the derived class Panel if the count of the collection is greater than zero. The example requires that you have created a Panel, a Button, and at least one other control on a Form. The other controls are added to the Panel control, and the Panel control added to the Form. When the button is clicked, the first control contained in the panel is removed from the Control.ControlCollection.

   // Remove the first control in the collection.
private:
   void removeAtButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      if ( panel1->Controls->Count > 0 )
      {
         panel1->Controls->RemoveAt( 0 );
      }
   }

// Remove the first control in the collection.
private void removeAtButton_Click(object sender, System.EventArgs e)
{
   if (panel1.Controls.Count > 0)
   {
      panel1.Controls.RemoveAt(0);
   }
}

' Remove the first control in the collection.
Private Sub RemoveAtButton_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles RemoveAtButton.Click
    If (Panel1.Controls.Count > 0) Then
        Panel1.Controls.RemoveAt(0)
    End If
End Sub

Remarks

When a Control is removed from the control collection, all subsequent controls are moved up one position in the collection.

You can also remove a Control that you previously added by using the Remove or Clear methods.

To add new Control objects to the collection, use the Add or AddRange methods.

Applies to

See also