how to bind image in image control in asp.net

i want to bind image in image control but according to the value in Eval

if Eval == True then imageurl = "image1" else imageurl = "i开发者_Python百科mage"

how to write if condition with eval to get above output

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Try

<%#(Eval("Columnname").ToString()=="True")?"Image1.jpg":"Image2.jpg"%>