Count the Rows of a Filtered Tablix

Been having some major ball aches with SSRS (SQL Server Reporting Services) recently -specifically around trying to hide elements and filter data.

In this instance, I needed to hide a row in a group if there were no rows in the filtered tablix. This is the process I followed:

1. Added a column to the tablix and set the column visibility to hidden

2. Added a text box to the header row and set the expression for it to: =CountRows()

3. Set the row visibility expression to this:

=(Int32.Parse(ReportItems!txtUsageDataRowCount.Value) <= 0)

An extra to note here is the use of ReportItems. It's a neat way of referring to a value in a text box. It does only work for text boxes

Error Applying Security - Failed to Enumerate Objects

I was recently trying to apply some security settings to a folder in Windows. When I clicked OK or Apply I had a Error Applying Security - Failed to enumerate objects in the container. Access is denied error for every single file in the folder. Very annoying!

I did some hunting around and came across this article. In this article, the author was unable to delete a folder, but the same process fixes the security/permissions error I was having. The commands are:

1. Open the command window running as administrator
2. Run the following commands on the folder in question:

takeown /f "C:\My Folder Path Here" /r /d y

icacls "C:\My Folder Path Here" /grant administrators:F /T

Sorted :) The permissions were then successfully applied.