.NET Framework 4.6 and 4.5
Displays the current value of the spin box (also known as an up-down control) in the appropriate format.
protected override void UpdateEditText()
If the spin box is not being initialized, the current value is validated to be between the Minimum and Maximum values and is converted to the correct format for display in the control.
Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client Profile
Supported in: 4, 3.5 SP1