The ToolTip.AutoPopDelay property enables you to shorten or lengthen the time that the System.Windows.Forms.ToolTip window is displayed when the pointer is on a control. For example, if you display extensive Help in a ToolTip window, you can increase the value of this property to ensure that the user has sufficient time to read the text.

If you want to have a consistent delay pattern for your ToolTip windows, you can set the ToolTip.AutomaticDelay property. The ToolTip.AutomaticDelay property sets the ToolTip.AutoPopDelay, ToolTip.ReshowDelay, and ToolTip.InitialDelay properties to initial values based on a single value. Every time the ToolTip.AutomaticDelay property is set, the ToolTip.AutoPopDelay property is set to 10 times the ToolTip.AutomaticDelay property value. Once the ToolTip.AutomaticDelay property is set, you can independently set the ToolTip.AutoPopDelay property, overriding the default value.

The maximum time you can delay a popup is 5000 milliseconds. For longer durations, use the erload:System.Windows.Forms.ToolTip.Show method to control the exact moment when the ToolTip is displayed.