C# DataTable find rows not present in another DataTable
<p>I have 2 DataTables. One representing Customers and the other representing CustomerContacts.</p>

<p>I need to find all the Customer rows which do not have any CustomerContact row.</p>

<p>Other than having 2 loops and using DataViews and FindRows to find which Customers do not have any contacts, is there a simpler way to code? I am not familiar with LINQ and do not wish to use it for my current project. </p>

<p>I am using .NET 4.5</p>

<p>I cant directly use SQL at database, as there is no "database". I am populating the DataTables by custom reading Excel files.</p>