Question

In my project I have a settings form. Where if any changes happen I have to notify user about it if he wants to leave that page without saving his changes. At this time I am doing this by catching every control change event. I am sure there is a better way – like catching the change event from its container. Is it possible?

Answer 1

You have the right solution, but you may want to be very generic about catching the change events. For example, you could try something like this right after the InitializeComponent(); line in the constructor:

foreach(Control c in Controls) {
    c.TextChanged += new EventHandler(genericTextBox_TextChanged);
}

genericTextBox_TextChanged would set a form-wide hasChanged flag to true, or something really basic like that. You may need to make this into a recursive function that loops through all of the children of c if it has child controls.