I'm attempting to implement a find and replace in SSIS 2008 but I believe the code that was provided in this thread is VB not C#. I'm receiving the error : "Cannot convert type 'string' to 'System.IO.StreamReader'"

System.IO.StreamReader reader;

reader = (System.IO.StreamReader) Dts.Variables["User::FileSource"].Value.ToString();

System.IO.StreamWriter writer;

writer = (System.IO.StreamWriter) Dts.Variables["User::FileDestination"].Value.ToString();

Without the cast to a string there are no errors with the C# code but then I'm receiving the following error when executing the script task.

Error: 0x1 at Script Task: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.IO.StreamReader'.

Any assistance is greatly appreciated.

Thank you!