Sublassing WebLabel

Brian_O_Brien · January 21, 2014, 3:32am

I want a way to know when the text of a label is changed.
I’ve subclassed WebLabel for MyWebLabel, but how to I get to know when
l.Text = “something”
Has been performed?

Tom_Iwaniec · January 21, 2014, 3:45am

Make a computed property named MyText as string
Under Get put return me.Text
Under Set put me.Text=value

Then use myLabel.myText=“asdf”. You can catch any changes within the computed property’s set method.

Brian_O_Brien · January 21, 2014, 3:47am

I see. So the existing properties (computed properties) themselves can not be overridden?

Tom_Iwaniec · January 21, 2014, 3:54am

Pretty sure no but maybe someone else knows a way. Just tested and it causes the expected infinite loop.

Norman_P · January 21, 2014, 6:49am

Properties are not virtual so no
You can shadow them but it’s not recommended as it can lead to hard to find bugs