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POObservableCollection and IDataErrorInfo with a XML file
 

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    <p>MainWindow() and GetXmlData() work fine and display the xmlfile on gridview. But when I include the XmlNode :IDataErrorInfo class, it stops working. </p> <p>I like to get all of them to work to display and validate the gridview. Anyone could spot anything I miss? Or explanation, I'm hitting a stop here. It seems like an error between observablecollection.</p> <pre><code> public MainWindow() { InitializeComponent(); RadGridView testGrid = new RadGridView(); testGrid.ItemsSource = GetXmlData(); testGrid.AutoGenerateColumns = false; GridViewDataColumn col1 = new GridViewDataColumn(); col1.DataMemberBinding = new Binding("JobKey") { ValidatesOnDataErrors = true, NotifyOnValidationError = true }; testGrid.Columns.Add(col1); LayoutRoot.Children.Add(testGrid); } private static object GetXmlData() { XmlDocument doc = new XmlDocument(); doc.Load(@"c:\\JobSetupFile.xml"); XmlDataProvider provider = new XmlDataProvider(); provider.IsAsynchronous = false; provider.Document = doc; provider.XPath = "JobSetup/JobParameters"; return new ObservableCollection&lt;XmlNode&gt;((IEnumerable&lt;XmlNode&gt;)provider.Data); } public class XmlNode : IDataErrorInfo { public string JobKey { get; set; } public XmlNode() { } public string Error { get { throw new NotImplementedException(); } } public string this[string columnName] { get { string result = string.Empty; if (columnName.Equals("JobKey")) { if (JobKey.Where(s =&gt; Char.IsLetter(s)).Count() != JobKey.Length) result = "Invalid name format. Name should contain letters only"; } return result; } } } </code></pre>
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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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