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Editorial Team
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Asked: 2026-05-13T17:11:15+00:00

I have a WinForm App(.Net 3.5) that we use in house for data entry…ish,

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I have a WinForm App(.Net 3.5) that we use in house for data entry…ish, like things. Member Plans, Demographics, etc. The App has a Shell Form with all the navigation and then embeds a UserControl based on there navigation choices.

I need to be able to tell if they have made any changes in any of the controls so that I may pop up a Save reminder if they try and navigate away. What is the best way to go about that? Any and all suggestions are welcome.

I assume it is ridiculous to have hook into an event for each control on each User Control to check if any data was entered, correct?

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  1. Editorial Team

    If you’re using Data Binding, you can implement INotifyPropertyChanged (either by hand or by generating a runtime proxy) in your classes, subscribe to PropertyChanged event and do all the tracking there.

    If not, you can recursively iterate over controls on form/usercontrol, subscribe to appropriate events for each control (for example TextChanged for a TextBox, SelectedItemChanged for a ComboBox control, etc.) and forward calls to your tracking routines.

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