Force Windows Forms (Winforms) toolstrip tooltip to refresh or hide immediately using C#

If you are using the tooltip text on a ToolStrip control you may find that the control does not update the tooltip immediately and the tooltip may not hide when you start a long running process leaving the tooltip stuck on the screen. The toolstrip actually has a tooltip control under the hood which you can access with reflection. Calling RemoveAll on the tooltip control will immediately remove all tooltips. https://learn.microsoft.com/dotnet/api/system.windows.forms.tooltip.removeall /// <summary> /// Occurs when the user clicks the toolstrip button. /// </summary> /// <param name=" sender "> The control that raised the event. </param> /// <param name=" e "> The event arguments. </param> private void ToolStripButton_Click( object sender, EventArgs e) { ToolTip toolTip = ( ToolTip )toolStrip.GetType().GetProperty( "ToolTip" , System.Reflection. BindingFlags .NonPublic | System.Reflection. BindingFlags .I...