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    <p>CopyToDataTable() only works when your query returns an IEnumerable&lt;'DataRow>. In your query, you are returning an anonymous type. Anonymous types don't carry the extension method for CopyToDataTable(). </p> <p>You can create a table using the ConvertToDataTable extension listed below. You'll have to convert it to VB.NET (there are converters out there if you google).</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data; using Common; namespace TestConsole { public class Linq_join_2_datatables_that_share_a_column_and_put_result_in_new_datatable { public class Table1 { public int CatalogId { get; set; } public string Name { get; set; } public int SNum { get; set; } } public class Table2 { public int CatalogId { get; set; } public int NumItems { get; set; } public int IgnoredItems { get; set; } } public static void Start() { DataTable table1 = new DataTable(); table1.Columns.Add("catalogid", typeof(int)); table1.Columns.Add("name", typeof(string)); table1.Columns.Add("snum", typeof(int)); DataRow row = table1.Rows.Add(353, "xx", 4); DataTable table2 = new DataTable(); table2.Columns.Add("catalogid", typeof(int)); table2.Columns.Add("numitems", typeof(int)); table2.Columns.Add("ignoreditems", typeof(int)); table2.Rows.Add(353, 4, 0); var query = (from t1 in table1.AsEnumerable() join t2 in table2.AsEnumerable() on t1.Field&lt;int&gt;("catalogid") equals t2.Field&lt;int&gt;("catalogid") select new { catalogid = t1.Field&lt;int&gt;("catalogid"), name = t1.Field&lt;string&gt;("name"), snum = t1.Field&lt;int&gt;("snum"), numitems = t2.Field&lt;int&gt;("numitems"), ignoreditems = t2.Field&lt;int&gt;("ignoreditems") }).ToList(); DataTable table3 = query.ConvertToDataTable(); } } } using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data; using System.ComponentModel; using System.Reflection; namespace Common { public static class DataTableExtensions { public static DataTable ConvertToDataTable&lt;T&gt;(this IList&lt;T&gt; data) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T)); DataTable table = new DataTable(); foreach (PropertyDescriptor prop in properties) table.Columns.Add(prop.Name, Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType); foreach (T item in data) { DataRow row = table.NewRow(); foreach (PropertyDescriptor prop in properties) row[prop.Name] = prop.GetValue(item) ?? DBNull.Value; table.Rows.Add(row); } table.AcceptChanges(); return table; } } } </code></pre>
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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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