Windows Forms FAQ resources

14. Windows Forms Patterns

14.3 Why are the Tooltips not being shown on a NumericUpDown control?

This is because of a bug in the .net framework. When tooltips are set on a control that hosts other controls within it (like the numeric updown), tooltips are not shown on those child controls. To workaround this issue, do the following in code:

[C#]

foreach(Control c in this.numericUpDown1.Controls)

{

this.tooltip.SetToolTip(c, "mytooltip");

}

[VB.Net]

Dim c As Control

For Each c In Me.numericUpDown1.Controls

Me.tooltip.SetToolTip(c, "mytooltip")