Control.SetTopLevel(Boolean) Method

Definition

Sets the control as the top-level control.

C#
protected void SetTopLevel(bool value);

Parameters

value
Boolean

true to set the control as the top-level control; otherwise, false.

Exceptions

The value parameter is set to true and the control is an ActiveX control.

The GetTopLevel() return value is not equal to the value parameter and the Parent property is not null.

Remarks

If you call the SetTopLevel method of a Form and pass in a value of false, the form will not be visible until you call SetTopLevel again, passing in a value of true.

Applies to

Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also