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    <p>You need to create an event handler for the button-event of the usercontrol and fire it from the click event of the actual button.</p> <pre><code>class MyControl : UserControl { public delegate void ButtonClickedEventHandler(object sender, EventArgs e); public event ButtonClickedEventHandler OnUserControlButtonClicked; } </code></pre> <p>Now you need to listen to the event of the actual button:</p> <pre><code>class MyControl : UserControl { // See above public MyControl() { _myButton.Click += new EventHandler(OnButtonClicked); } private void OnButtonClicked(object sender, EventArgs e) { // Delegate the event to the caller if (OnUserControlButtonClicked != null) OnUserControlButtonClicked(this, e); } } </code></pre> <p>From the main form (owner) you can now listen to the event:</p> <pre><code>public FancyForm : Form { public FancyForm() { _myUserControl.OnUserControlButtonClicked += new EventHandler(OnUCButtonClicked); } private void OnUCButtonClicked(object sender, EventArgs e) { // Handle event from here MessageBox.Show("Horray!"); } } </code></pre> <p><strong>Update</strong>: Both implementations can even safe a few lines of code by using Lambdas and default EventHandler delegate definitions.</p> <pre><code>class MyControl : UserControl { public event EventHandler OnUserControlButtonClicked; // Use this, if you want to use a different EventArgs implementation: // public event EventHandler&lt;CustomEventArgs&gt; OnUserControlButtonClicked; public MyControl() { _myButton.Click += (s, e) =&gt; { if (OnUserControlButtonClicked != null) OnUserControlButtonClicked(this, e); } } } public FancyForm : Form { public FancyForm() { _myUserControl.OnUserControlButtonClicked += (s, e) =&gt; MessageBox.Show("Horray!"); } } </code></pre> <p><strong>Update 2</strong>: Safe even more lines with the power of C# 6:</p> <pre><code>class MyControl : UserControl { public event EventHandler OnUserControlButtonClicked; public MyControl() { _myButton.Click += (s, e) =&gt; this.OnUserControlButtonClicked?.Invoke(this, e); } } </code></pre>
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    1. COThank you! this work fine!
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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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