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    <p>You can try creating a dynamic expression at runtime. You shouldn't have to explicitly cast the IQueryable back to it's generic type, as long as you don't change the element types with a "Select". </p> <p>Example:</p> <pre><code> public class SecurityHandler : ICallHandler { public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext) { var message = getNext()(input, getNext); var returnType = message.ReturnValue.GetType(); if (typeof(IQueryable).IsAssignableFrom(returnType)) { var entityType = returnType.GetGenericArguments().Single(); var securableAttribute = entityType.GetAttribute&lt;SecurableTypeAttribute&gt;(); if (securableAttribute != null) { //Build expression to filter the list from the attribute and primary key of the entity //Return the new IQueryable message.ReturnValue = AddWhereExpression( (IQueryable)message.ReturnValue, securableAttribute.FilterValues, securableAttribute.FilterPropertyName); } } return message; } public int Order { get; set; } private static IQueryable AddWhereExpression(IQueryable query, IEnumerable ids, string filterPropertyName) { // Build this expression: // item =&gt; ids.Contains(item.[PrimaryKeyPropertyName]) var itemParameter = Expression.Parameter(query.ElementType, "item"); var itemParameterProperty = Expression.Property(itemParameter, filterPropertyName); var listParameter = Expression.Constant(ids); var containsExpression = Expression.Call( typeof(System.Linq.Enumerable), "Contains", new[] { typeof(int) }, listParameter, itemParameterProperty); var delegateTypeExpression = Expression.GetFuncType(new[] { query.ElementType, typeof(bool) }); var whereExpression = Expression.Lambda( delegateTypeExpression, containsExpression, new[] { itemParameter } ); Expression callWhere = Expression.Call( typeof(Queryable), "Where", new Type[] { query.ElementType }, // type args for Where&lt;T&gt;() query.Expression, whereExpression ); return query.Provider.CreateQuery(callWhere); } } </code></pre> <p>I am assuming your attribute will provide some array of allowable values.</p> <p>Here are some extension methods that will help with this process:</p> <pre><code>public static class TypeExtensions { public static TAttribute GetAttribute&lt;TAttribute&gt;(this Type type) { var attributes = type.GetCustomAttributes(typeof(TAttribute), true); if (attributes.Length == 0) return default(TAttribute); return (TAttribute)attributes[0]; } public static PropertyInfo GetPropertyWithAttributeValue&lt;TAttribute&gt;( this IEnumerable&lt;PropertyInfo&gt; properties, Func&lt;TAttribute, bool&gt; findPredicate) where TAttribute : Attribute { var property = from p in properties where p.HasAttribute&lt;TAttribute&gt;() &amp;&amp; findPredicate.Invoke(p.GetAttribute&lt;TAttribute&gt;()) select p; return property.FirstOrDefault(); } public static bool HasAttribute&lt;TAttribute&gt;(this PropertyInfo propertyInfo) { return propertyInfo.GetCustomAttributes(typeof(TAttribute), true).Any(); } public static TAttribute GetAttribute&lt;TAttribute&gt;(this PropertyInfo propertyInfo) { var attributes = propertyInfo.GetCustomAttributes(typeof(TAttribute), true); if (attributes.Length == 0) return default(TAttribute); return (TAttribute)attributes[0]; } } </code></pre> <p>I haven't tried running this myself, but hopefully it's enough to get you started.</p>
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    1. POLinq to SQL with Unity Interception
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    1. USJason Wicker
    1. USJason Wicker
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    1. POLinq to SQL with Unity Interception
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    2. VO
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    1. COThis worked perfectly!
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      1. USBrian
    2. COGreat to hear. Happy to help.
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      1. USJason Wicker
 

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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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