Visualizers are enhancements of the Visual Studio debugger, used for viewing certain type of objects in Debug mode. A visualizer creates a dialog box or another interface to display an object or variable in a manner that is appropriate to its data type. You can read more about visualizers in MSDN.

LinqConnect includes a visualizer for DataQuery objects, that allows you to view a generated SQL command for the LINQ statement in a dialog box. SQL syntax highlighting provides more comfortable reading.

For example, we have the following LINQ statement:

 var query = from o in db.Orders
             join d in db.OrderDetails on o.OrderID equals d.OrderID
             orderby o.OrderDate
             select new 
             {
               o.OrderDate,
               o.OrderID,
               d.ProductID,
               d.Price
              };

Dim Query = From o in db.Orders
            Join d in db.OrderDetails on o.OrderID Equals d.OrderID
            Orderby o.OrderDate
            Select new 
            {
               o.OrderDate,
               o.OrderID,
               d.ProductID,
               d.Price
            }

You can call a visualizer window from a debugger variables window, or from the QuickWatch dialog box with the help of magnifying glass icon while debugging. Point to the query and click the magnifying glass to select a visualizer appropriate to the LINQ statement.

The visualizer window contains SQL-command corresponding to the LINQ-statement described above:

Also, you can use other visualizers for different cases of project debugging.

Note:
Note, that debugger visualizers need greater privileges than are allowed by a partial trust application. So, visualizers do not load when you are stopped in code with partial trust. You must run the code with full trust to view visualizer.