Even though you may have set focus to your first enterable textbox in a Silverlight Control, it will not truly receive the focus until the actual Silverlight control has focus first.
In order to do this, add a few lines …
SQL Server Reporting Services (SSRS) – How to Receive an Image into a Report Parameter to a SSRS Report
In this example, I will demonstrate how to convert an image in an Windows Form Application to a Base64 String that can be used to populate a report parameter that will be received into a SQL Server Reporting Services report …