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    <ol> <li><p>That view is fair enough. Under the covers, other objects such as CurrencyManager and Binding make sure controls are updated when the underlying data source changes.</p></li> <li><p>Adding an item to a data bound BindingList triggers a series of events that end up trying to update the DataGridView. Since the UI can only be updated from the UI thread, you should add items to BindingList from the UI thread through <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.invoke.aspx" rel="nofollow noreferrer">Control.Invoke</a>.</p></li> </ol> <p>I assembled a quick sample creating a Form with a DataGridView, a BindingSource and a Button.</p> <p>The button spins up another thread that simulates getting a new item for inclusion in the BindingList. </p> <p>The inclusion itself is done back in the UI thread through Control.Invoke. </p> <pre><code> public partial class BindingListChangedForm : Form { BindingList&lt;Person&gt; people = new BindingList&lt;Person&gt;(); Action&lt;Person&gt; personAdder; public BindingListChangedForm() { InitializeComponent(); this.dataGridView1.AutoGenerateColumns = true; this.bindingSource1.DataSource = this.people; this.personAdder = this.PersonAdder; } private void button1_Click(object sender, EventArgs e) { Thread t = new Thread(this.GotANewPersononBackgroundThread); t.Start(); } // runs on the background thread. private void GotANewPersononBackgroundThread() { Person person = new Person { Id = 1, Name = "Foo" }; //Invokes the delegate on the UI thread. this.Invoke(this.personAdder, person); } //Called on the UI thread. void PersonAdder(Person person) { this.people.Add(person); } } public class Person { public int Id { get; set; } public string Name { get; set; } } </code></pre>
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    1. USAlfred Myers
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    1. COAlfred, thank you for your clear example. But, suppose I have a class that is created on another thread which creates and adds to a list on this thread. To data bind this to a grid I need a reference to the UI thread yes? I'm not sure what to do here for the best. Pass in a reference to the form via the class constructor perhaps, and do something this way?
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      1. USAndy
    2. CO1. Yes. 2. Pass a reference of your object to the form through the **Form's** constructor or another member.
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      1. USAlfred Myers
    3. COAndy, objects normally have no relation to a Thread, Controls are an exception. It is code that executes on a thread.
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      1. USHenk Holterman
 

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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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