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PO
 

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  1. PO
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    <p>Ok I've wrote some code, but you might not like it :)</p> <pre><code>public class DataChangedEventArgs : EventArgs { public string Data { get; set; } public DataChangedEventArgs(string data) { Data = data; } } public delegate void DataChangedEventHander(DataChangedEventArgs e); public class BackEnd { public event DataChangedEventHander OnDataChanged; private string _data; public string Data { get { return _data; } set { _data = value; RaiseOnDataChanged(); } } private static readonly object _sync = new object(); private static BackEnd _instance; public static BackEnd Current { get { lock (_sync) { if (_instance == null) _instance = new BackEnd(); return _instance; } } } private void RaiseOnDataChanged() { if(OnDataChanged != null) OnDataChanged(new DataChangedEventArgs(Data)); } } public class ConsumerControl { public event EventHandler OnTextChanged; private string _text; public string Text { get { return _text; } set { _text = value; if (OnTextChanged != null) OnTextChanged(this, EventArgs.Empty); } } } public class Consumer { public ConsumerControl Control { get; set; } public Consumer() { Control = new ConsumerControl(); BackEnd.Current.OnDataChanged += NotifyConsumer; Control.OnTextChanged += OnTextBoxDataChanged; } private void OnTextBoxDataChanged(object sender, EventArgs e) { NotifyBackEnd(); } private void NotifyConsumer(DataChangedEventArgs e) { Control.Text = e.Data; } private void NotifyBackEnd() { // unsubscribe BackEnd.Current.OnDataChanged -= NotifyConsumer; BackEnd.Current.Data = Control.Text; // subscribe again BackEnd.Current.OnDataChanged += NotifyConsumer; } } public class BackEndTest { public void Run() { var c1 = new Consumer(); var c2 = new Consumer(); c1.Control.Text = "1"; BackEnd.Current.Data = "2"; } } </code></pre> <p>The main idia is here:</p> <pre><code>// unsubscribe BackEnd.Current.OnDataChanged -= NotifyConsumer; BackEnd.Current.Data = Control.Text; // subscribe again BackEnd.Current.OnDataChanged += NotifyConsumer; </code></pre>
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    1. POHow can I prevent infinite recursion when using events to bind UI elements to fields?
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    1. USRoman Kupin
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    1. POHow can I prevent infinite recursion when using events to bind UI elements to fields?
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    1. COYou're right, I don't like it, but it's better than the boolean flag idea. +1.
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      1. USBilly ONeal
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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