Data Layout - Do you have nodes count like Outlook?

A report with drill through like this should have the number in nodes like Outlook.

Here's how to add nodes count to the textbox with "collapsed(+)" in your report:

In the Expression property of the Textbox, add an expression to show nodes count. Use the following expression:

--Change the SQL ( or add a new DataSet )
SELECT a.TerritoryID, ( CONVERT ( varchar,a.TerritoryDescription ) + ' (' + CONVERT ( varchar, count ( c.TerritoryID ) ) + ')' ) AS Number, ... FROM Territories a INNER JOIN EmployeeTerritories b ON a.TerritoryID=b.TerritoryID, ... GROUP BY a.TerritoryID, a.TerritoryDescription,...

--Expression to show nodes count

= Fields!Number.Value

--Expression to show nodes count

= Fields!Name.Value + "(" + CStr ( CountRows( ) ) + ")"

Note: The CountRows function is one of the several native functions provided by Reporting Services and returns the count of rows within a specified scope. If no scope is specified, it defaults to the innermost scope, which in our case resolves to the static group that defines the values in the data cells.