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ToolTip.Show Method (String, IWin32Window, Int32)

Sets the ToolTip text associated with the specified control, and then displays the ToolTip for the specified duration.

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

public void Show(
	string text,
	IWin32Window window,
	int duration


Type: System.String

A String containing the new ToolTip text.

Type: System.Windows.Forms.IWin32Window

The Control to display the ToolTip for.

Type: System.Int32

An Int32 containing the duration, in milliseconds, to display the ToolTip.


The window parameter is null.


duration is less than or equal to 0.

The ToolTip is positioned in the center of the associated control represented by the win parameter. To display the ToolTip modally, call the Show(String, IWin32Window) overloaded version of this method instead.

Applications running in partial trust must assert the AllWindows permission to use this method, as Show can control the display and location of a ToolTip independent of user action.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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