.NET Framework 4.6 and 4.5
Converts the text displayed in the spin box (also known as an up-down control) to a numeric value and evaluates it.
protected void ParseEditText()
If the UserEdit property is set to true, the text displayed is converted to a numeric value so it can be validated to be between the Minimum and Maximum property values.
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