McBasic™Get McBasic™ ↗Target
Name of a visual control in this form whose custom validation message is being edited. Empty means no target selected.
ValidationProvider
Combine built-in validity with a business rule attached to a named control.
Use it in a Form#
valFields.Target selects which field receives ErrorText. Setting ErrorText to an empty string clears that field’s previous message. The age rule is applied only after numAge.IsValid succeeds. A final status should summarize the result, while the individual field retains the reason it needs attention.
Add ValidationProvider to the component tray and name it valFields for this example:
| Property | Example value |
|---|---|
Target | "" |
ErrorText | "" |
Use the full lesson for the owner’s initialization code and its complete layout.
Properties#
Contract defaults are shown below. Where a new control has a different Designer starting value, that value is listed separately.
ErrorText
Custom error for Target, at most 256 characters on one line. Empty clears that target's custom error.
Events and parameters#
Replace control with the object’s Name when creating a handler. ByRef arguments may be changed by your handler; ByVal arguments report an input value.
No events are declared.
Methods#
No methods are declared in this component’s built-in metadata. Use its documented properties and events; do not infer APIs from a similarly named control in another framework.
Source baseline
20f4bfed6b · Build manifest