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    <p>Here is a sample which uses attributes to hide columns. It uses an attached property to handle the <code>AutoGeneratingColumn</code> event.</p> <p><strong>HideColumnIfAutoGenerated.cs</strong> - Attribute</p> <pre><code>namespace AutoHideColumn { public class HideColumnIfAutoGenerated : System.Attribute { public HideColumnIfAutoGenerated() { } } } </code></pre> <p><strong>DataGridExtension.cs</strong> - Attached Property</p> <pre><code>using System.ComponentModel; using System.Windows; using System.Windows.Controls; namespace AutoHideColumn { public static class DataGridExtension { public static readonly DependencyProperty HideAnnotatedColumnsProperty = DependencyProperty.RegisterAttached( "HideAnnotatedColumns", typeof(bool), typeof(DataGridExtension), new UIPropertyMetadata(false, OnHideAnnotatedColumns)); public static bool GetHideAnnotatedColumns(DependencyObject d) { return (bool)d.GetValue(HideAnnotatedColumnsProperty); } public static void SetHideAnnotatedColumns(DependencyObject d, bool value) { d.SetValue(HideAnnotatedColumnsProperty, value); } private static void OnHideAnnotatedColumns(DependencyObject d, DependencyPropertyChangedEventArgs e) { bool hideAnnotatedColumns = (bool)e.NewValue; DataGrid dataGrid = d as DataGrid; if (hideAnnotatedColumns) { dataGrid.AutoGeneratingColumn += dataGrid_AutoGeneratingColumn; } else { dataGrid.AutoGeneratingColumn -= dataGrid_AutoGeneratingColumn; } } private static void dataGrid_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e) { PropertyDescriptor propertyDescriptor = e.PropertyDescriptor as PropertyDescriptor; if (propertyDescriptor != null) { foreach (var item in propertyDescriptor.Attributes) { if (item.GetType() == typeof(HideColumnIfAutoGenerated)) { e.Cancel = true; } } } } } } </code></pre> <p><strong>XAML</strong></p> <pre><code>&lt;Window x:Class="AutoHideColumn.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:AutoHideColumn" Title="MainWindow" Height="350" Width="525"&gt; &lt;Grid&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="*"/&gt; &lt;RowDefinition Height="*"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;DataGrid Name="dg" local:DataGridExtension.HideAnnotatedColumns="True"&gt; &lt;/DataGrid&gt; &lt;DataGrid Grid.Row="1" Name="dg1"&gt; &lt;/DataGrid&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre> <p><strong>CodeBehind</strong></p> <pre><code>using System.Collections.Generic; using System.Windows; namespace AutoHideColumn { /// &lt;summary&gt; /// Interaction logic for MainWindow.xaml /// &lt;/summary&gt; public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); this.dg.ItemsSource = new List&lt;Customer&gt;(); this.dg1.ItemsSource = new List&lt;Customer&gt;(); } } public class Customer { [HideColumnIfAutoGenerated()] public int ID { get; set; } public string Name { get; set; } } } </code></pre>
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    1. POHide a Column Using Data Annotations in WPF
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    1. USAnand Murali
    1. USAnand Murali
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    1. COHow could I use this to dynamically set which columns to hide at run-time?
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      1. USjoek1975
    2. CONot sure whether I got you dude. You need to annotate the columns with `[HideColumnIfAutoGenerated()]`. That was your question right?
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      1. USAnand Murali
    3. COYes, but I also need to set which columns to hide at run-time. Basically the user will select which fields to show in the grid.
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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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