Option Strict ON的问题

[fsvision]

在Option strict on的情况下,以下代码有错
..............
Dim cmd As SqlCommand
..............
Dim read As SqlDataReader = cmd.ExecuteReader
read.Read
Response.ClearHeaders()
Response.BinaryWrite(read("filedata"))
|-----------------提示不支持类型转换
在Option strict OFF的情况下 ,一切正常
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问:要求在Option strict on的情况下,如何实现SqlDataReader 与BYTE的转换
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[saucer]

try

Response.BinaryWrite(CType(read("filedata"),Byte()))

[fsvision]

.........
呵呵实在是见笑了