DirectCast Error In VB.Net

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hello, this is Vikash Gohil.

I have a class in which I have the following constructor.

VB

dim xyz as AppInfo

sub abc (byref Arg1 as object, byref Arg2 as Object)

xyz = DirectCast(Arg2, AppInfo)    

end sub

Above code is executed using reflection by passing 2 parameters

Param1 as type OracleTransaction
Param2 as type AppInfo

The above code gives error in DirectCast Statement as "Unable to Convert variable of type "AppInfo" to type "AppInfo""

why does it give error when the types are same?

Posted 23-Jan-13 1:01am

VikashGohil

Updated 23-Jan-13 1:21am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

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Dave Kreskowiak · Answer 1 · 2013-01-23T03:51:00

Solution 2

This shouldn't even be a problem as, apparently, the first thing you're doing is converting param2 to an AppInfo object. Why are you even specifying an Object type in the function header to begin with?? Just change it to AppInfo and be done with it, no conversion necessary.

Posted 23-Jan-13 3:51am

Dave Kreskowiak

v2

CHill60 · Answer 2 · 2013-01-23T02:57:00

Solution 1

It's because AppInfo is a reference type. Have a look at this article for the full explanation http://visualbasic.about.com/od/learnvbnet/a/casting1_3.htm[^]

Posted 23-Jan-13 2:57am

CHill60