UpDownBase.Select Method (Int32, Int32)


Selects a range of text in the spin box (also known as an up-down control) specifying the starting position and number of characters to select.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

member Select : 
        start:int *
        length:int -> unit


Type: System.Int32

The position of the first character to be selected.

Type: System.Int32

The total number of characters to be selected.

The Select method can be used when the spin box gets focus, or when the Text property fails data validation. When adding the validation code for the ValidateEditText method in a derived class, call the Select method when validation fails.

The following code example uses the derived class NumericUpDown. This code requires that a NumericUpDown control and a Button have been created on a form and the System.Drawing namespace has been added as a reference. On the Click event for the button, the point size of text in the NumericUpDown control increases. This prompts the control to adjust its PreferredHeight property so that all the text is visible in the control. After the user enters a new value and leaves the NumericUpDown control, the text is converted to a numeric value from a string value and validated to be between the Minimum and Maximum values. If the value is not valid, a MessageBox is displayed with the error, and the Select method will select the text so the user can enter a new value.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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