TypeLoad Exception

[Tunga Torgal]

Hi,

I'm getting an System.TypeLoadException with this type def:

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Ansi)]
public struct SCFEDBTxnItem
{
[FieldOffset(0)] public SCFEDBTxnItemHeader sHeader;
[FieldOffset(0)] public SCFEDBTxnOrderItem sOrder;
[FieldOffset(0)] public SCFEDBTxnTradeItem sTrade;
[FieldOffset(0)] public SCFEDBTxnErrorItem sError;
[FieldOffset(0)] public SCFEDBTxnRequestItem sRequest;
}

So, what is the problem?

[Nicholas Paldino [.NET/C# MVP]]

Tunga,

What is the exception you are getting? It is most likely that the type
load exception is not coming from the code, but some other factor. Can you
give the full details of the exception?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Tunga Torgal" <tu*********@hotmail.com> wrote in message
news:%2******************@tk2msftngp13.phx.gbl...

Hi,

I'm getting an System.TypeLoadException with this type def:

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Ansi)]
public struct SCFEDBTxnItem
{
[FieldOffset(0)] public SCFEDBTxnItemHeader sHeader;
[FieldOffset(0)] public SCFEDBTxnOrderItem sOrder;
[FieldOffset(0)] public SCFEDBTxnTradeItem sTrade;
[FieldOffset(0)] public SCFEDBTxnErrorItem sError;
[FieldOffset(0)] public SCFEDBTxnRequestItem sRequest;
}

So, what is the problem?

[Tunga Torgal]

First, this is union...
So, everyfield must start at the same offset...

Am I wrong? Maybe, I did not understand the concept of fieldoffsets and
layoutkind.explicit...

"Dilip Krishnan" <[e-mail]> wrote in message
news:eU**************@TK2MSFTNGP10.phx.gbl...

Tunga,
From what I see its not byte aligned. Every feild seems to be at
offset 0. If for example sHeader is 4 bytes long then FieldOffset for
the sOrder field should be FieldOffset(4)
Hope that helps

Tunga Torgal wrote:

Hi,

I'm getting an System.TypeLoadException with this type def:

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Ansi)]
public struct SCFEDBTxnItem
{
[FieldOffset(0)] public SCFEDBTxnItemHeader sHeader;
[FieldOffset(0)] public SCFEDBTxnOrderItem sOrder;
[FieldOffset(0)] public SCFEDBTxnTradeItem sTrade;
[FieldOffset(0)] public SCFEDBTxnErrorItem sError;
[FieldOffset(0)] public SCFEDBTxnRequestItem sRequest;
}

So, what is the problem?

--
Regards,
Dilip Krishnan
MCAD, MCSD.net
dilipdotnet at apdiya dot com

[Dilip Krishnan]

Tunga,
From what I see its not byte aligned. Every feild seems to be at
offset 0. If for example sHeader is 4 bytes long then FieldOffset for
the sOrder field should be FieldOffset(4)
Hope that helps

Tunga Torgal wrote:

Hi,

I'm getting an System.TypeLoadException with this type def:

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Ansi)]
public struct SCFEDBTxnItem
{
[FieldOffset(0)] public SCFEDBTxnItemHeader sHeader;
[FieldOffset(0)] public SCFEDBTxnOrderItem sOrder;
[FieldOffset(0)] public SCFEDBTxnTradeItem sTrade;
[FieldOffset(0)] public SCFEDBTxnErrorItem sError;
[FieldOffset(0)] public SCFEDBTxnRequestItem sRequest;
}

So, what is the problem?

--
Regards,
Dilip Krishnan
MCAD, MCSD.net
dilipdotnet at apdiya dot com

[Dilip Krishnan]

Aah unions! I'm guessing, but I think its possibly because they field
offsets dont work for reference types? Basically it cant compute the
union type because it cant compute the sizes at design time?

Tunga Torgal wrote:

First, this is union...
So, everyfield must start at the same offset...

Am I wrong? Maybe, I did not understand the concept of fieldoffsets and
layoutkind.explicit...

"Dilip Krishnan" <[e-mail]> wrote in message
news:eU**************@TK2MSFTNGP10.phx.gbl...

Tunga,
From what I see its not byte aligned. Every feild seems to be at
offset 0. If for example sHeader is 4 bytes long then FieldOffset for
the sOrder field should be FieldOffset(4)
Hope that helps

Tunga Torgal wrote:

Hi,

I'm getting an System.TypeLoadException with this type def:

[StructLayout(LayoutKind.Explicit, CharSet=CharSet.Ansi)]
public struct SCFEDBTxnItem
{
[FieldOffset(0)] public SCFEDBTxnItemHeader sHeader;
[FieldOffset(0)] public SCFEDBTxnOrderItem sOrder;
[FieldOffset(0)] public SCFEDBTxnTradeItem sTrade;
[FieldOffset(0)] public SCFEDBTxnErrorItem sError;
[FieldOffset(0)] public SCFEDBTxnRequestItem sRequest;
}

So, what is the problem?

--
Regards,
Dilip Krishnan
MCAD, MCSD.net
dilipdotnet at apdiya dot com

--
Regards,
Dilip Krishnan
MCAD, MCSD.net
dilipdotnet at apdiya dot com