How to Changing/Re arranging postion of RDLC report Field through C#

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.NET2.0

Windows

.NET

C#5.0

RDLC

, +

Dear,
i have used RDLC reports in my windows forms application VS 2005.
i have one textbox field or database field in report .

1. Actually i want to change location (left & top) of this textbox programmatically through C#.
OR
2. I can pass left and top values through parameters but i could not find any expression kind of options in textbox properties. Only options are there to control the format, font or visibility through expressions.
Same work i have done in crystal reports but its totally jammed me in RDLC.
Can any one help me out?
reagads