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Checking for updates to any controls on Windows Forms?

Posted on 2014-10-08
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Last Modified: 2014-10-09
I have a routine in my Form_Closing() Event that checks each control on my form that could change in value. If the value changes then a boolean variable is set in the controls Leave() Event. This isn't working real. Is there a better way to check if any values were changed. For example, if I load some data into some TextBox controls and the user changes some of it, what is the best and easiest way to flag that?

Thanks!
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Question by:BlakeMcKenna
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Jacques Bourgeois (James Burger) earned 500 total points
ID: 40370126
In order for Leave to work, you need to have recorded the original value somewhere. TextChanged is better suited for your task, because it won't be called if the value does not change. Just do not forget to reset your boolean variables after you load data from the source.

An alternative would be to record the original data from the source into the Tag property. That property is free for you to use as you want. When you want to check if there has been a change, simply compare Tag to Text.
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Author Closing Comment

by:BlakeMcKenna
ID: 40370646
Ah...the tag property! I forgot about that one. Ironically, I have used that before and it does come in handy!

Thanks James!
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