AssociatedControl Property
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PopupEventArgs.AssociatedControl Property

 

Gets the control for which the ToolTip is being drawn.

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

public Control AssociatedControl { get; }

Property Value

Type: System.Windows.Forms.Control

The Control that is associated with the ToolTip, or null if the ToolTip is not associated with a control.

Because you can associate the ToolTip with multiple controls through the ToolTip.SetToolTip method, you can use the AssociatedControl property to determine which control the Draw event is associated with. This is helpful if you want to perform different ToolTip customization based on the associated control.

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the ToolTip.Popup event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type ToolTip named ToolTip1. Then ensure that the event handler is associated with the ToolTip.Popup event.

private void ToolTip1_Popup(Object sender, PopupEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "AssociatedWindow", e.AssociatedWindow );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "AssociatedControl", e.AssociatedControl );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "IsBalloon", e.IsBalloon );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ToolTipSize", e.ToolTipSize );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Cancel", e.Cancel );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "Popup Event" );
}

.NET Framework
Available since 2.0
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