473,327 Members | 1,919 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,327 software developers and data experts.

XML Serialization Bug?

AP
Hello,

I'm using .NET 1.1. I have a class that has these two members:

public bool FurtherActionsRequired;

[System.Xml.Serialization.XmlIgnoreAttribute()]

public bool FurtherActionsRequiredSpecified;

If I serialize the class as is, neither of the above items get serialized.
If I remove the 2nd item and its ignore attribute, FurtherActionsRequired
gets serialized as it should. Is the serializer doing some kind of string
matching that would cause this behavior? Why is this happening?

Thanks,

Adam
Nov 12 '05 #1
3 5310
The second item is how the serialization implements an integer/boolean type
element/attribute.
If your ElementNameSpecified is false, it doesn't get serialized even if
there is a value for ElementName.
If you set ElementNameSpecified to true, ElementName will be serialized.

I think the reason is that there are no null values for types like integer,
bool, or Guid. So I guess anything that cannot be assigned null would use
the pattern above.

Jiho

"AP" <ad***@indra.com> wrote in message
news:ee**************@TK2MSFTNGP12.phx.gbl...
Hello,

I'm using .NET 1.1. I have a class that has these two members:

public bool FurtherActionsRequired;

[System.Xml.Serialization.XmlIgnoreAttribute()]

public bool FurtherActionsRequiredSpecified;

If I serialize the class as is, neither of the above items get serialized.
If I remove the 2nd item and its ignore attribute, FurtherActionsRequired
gets serialized as it should. Is the serializer doing some kind of string
matching that would cause this behavior? Why is this happening?

Thanks,

Adam

Nov 12 '05 #2
AP
That doesn't make sense to me at all. Let me simply the example for you.
Take a class:

public class AClass {
public bool FurtherActionsRequired;
public bool FurtherActionsRequiredSpecified;
}

this class serialized to XML produces the following XML output:

<?xml version="1.0" encoding="utf-8"?>
<AClass xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<FurtherActionsRequiredSpecified>false</FurtherActionsRequiredSpecified>
</AClass>

Why does FurtherActionsRequired not get serialized to XML? Is this a bug?

Adam

"Jiho Han" <ji******@infinityinfo.com> wrote in message
news:uR**************@TK2MSFTNGP10.phx.gbl...
The second item is how the serialization implements an integer/boolean type element/attribute.
If your ElementNameSpecified is false, it doesn't get serialized even if
there is a value for ElementName.
If you set ElementNameSpecified to true, ElementName will be serialized.

I think the reason is that there are no null values for types like integer, bool, or Guid. So I guess anything that cannot be assigned null would use
the pattern above.

Jiho

"AP" <ad***@indra.com> wrote in message
news:ee**************@TK2MSFTNGP12.phx.gbl...
Hello,

I'm using .NET 1.1. I have a class that has these two members:

public bool FurtherActionsRequired;

[System.Xml.Serialization.XmlIgnoreAttribute()]

public bool FurtherActionsRequiredSpecified;

If I serialize the class as is, neither of the above items get serialized. If I remove the 2nd item and its ignore attribute, FurtherActionsRequired gets serialized as it should. Is the serializer doing some kind of string matching that would cause this behavior? Why is this happening?

Thanks,

Adam


Nov 12 '05 #3
Your example should like this:

public class AClass
{
public bool FurtherActionsRequired;

[System.Xml.Serialization.XmlIgnoreAttribute()]
public bool FurtherActionsRequiredSpecified;
}

assuming that the field that you're really interested is
"FurtherActionsRequired"

FurtherActionsRequiredSpecified is how .NET handles non-nullable types. For
reference types, if you set the value to null, then the field will not
serialize at all unless you specify otherwise - I don't know how for the
moment, if someone does, feel free to jump in. However, for value types you
can't specify null as the value - i.e. you can't set an integer variable to
null. So .NET uses the above mechanism to say that whether this value-type
field/property should be serialized or not. It's always "<your value-type
variablename>Specified" with the XmlIgnoreAttribute.

Sorry if the explanation isn't any clearer.

Jiho

"AP" <ad***@indra.com> wrote in message
news:ON**************@TK2MSFTNGP10.phx.gbl...
That doesn't make sense to me at all. Let me simply the example for you.
Take a class:

public class AClass {
public bool FurtherActionsRequired;
public bool FurtherActionsRequiredSpecified;
}

this class serialized to XML produces the following XML output:

<?xml version="1.0" encoding="utf-8"?>
<AClass xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<FurtherActionsRequiredSpecified>false</FurtherActionsRequiredSpecified>
</AClass>

Why does FurtherActionsRequired not get serialized to XML? Is this a bug?

Adam

"Jiho Han" <ji******@infinityinfo.com> wrote in message
news:uR**************@TK2MSFTNGP10.phx.gbl...
The second item is how the serialization implements an integer/boolean

type
element/attribute.
If your ElementNameSpecified is false, it doesn't get serialized even if
there is a value for ElementName.
If you set ElementNameSpecified to true, ElementName will be serialized.

I think the reason is that there are no null values for types like

integer,
bool, or Guid. So I guess anything that cannot be assigned null would use
the pattern above.

Jiho

"AP" <ad***@indra.com> wrote in message
news:ee**************@TK2MSFTNGP12.phx.gbl...
Hello,

I'm using .NET 1.1. I have a class that has these two members:

public bool FurtherActionsRequired;

[System.Xml.Serialization.XmlIgnoreAttribute()]

public bool FurtherActionsRequiredSpecified;

If I serialize the class as is, neither of the above items get

serialized. If I remove the 2nd item and its ignore attribute, FurtherActionsRequired gets serialized as it should. Is the serializer doing some kind of string matching that would cause this behavior? Why is this happening?

Thanks,

Adam



Nov 12 '05 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

37
by: Ben | last post by:
Hi, there. Recently I was working on a problem where we want to save generic closures in a data structure (a vector). The closure should work for any data type and any method with pre-defined...
1
by: andrewcw | last post by:
There is an error in XML document (1, 2). I used XML spy to create the XML and XSD. When I asked to have the XML validated it said it was OK. I used the .net SDK to generate the class. I have...
3
by: Aaron Clamage | last post by:
Hi, I'm not sure that if this is the right forum, but any help would be greatly appreciated. I am porting some java serialization code to c# and I can't figure out the correct way to do it. ...
6
by: Uttam | last post by:
Hello, We are at a very crucial decision making stage to select between .Net and Java. Our requirement is to download a class at runtime on the client computer and execute it using remoting or...
3
by: Alexander | last post by:
When i store rule on PC with .NET.SP1 i cant restore them from PC without SP1. An i get this Error: System.Runtime.Serialization.SerializationException: Possible Version mismatch. Type...
4
by: mijalko | last post by:
Hi, I have inherited my class from System.Drawing.Printing.PrintDocument and I wish to serialize this object using XmlSerializer. And I get exception "There was an error reflecting type ...". If I...
5
by: Nikola Skoric | last post by:
I ran in Mono a program developed on .NET Framework 2.0 and it ran OK until I tried to desirialize a object. There the program died abruptly dumping this: System.ArgumentOutOfRangeException:...
0
by: bharathreddy | last post by:
Before going to that i want to say few thing on serialization : Serialization is the process of converting an object into a form that can be readily transported. For example, you can serialize an...
1
by: kikisan | last post by:
I am developing a windows service which utilizes the following classes: interface IPersistable; abstract class PersistableObject : IPersistable;
2
by: mkvenkit.vc | last post by:
Hello, I hope this is the right place to post a question on Boost. If not, please let me know where I can post this message and I will do so. I am having a strange problem with std::string as...
0
by: DolphinDB | last post by:
Tired of spending countless mintues downsampling your data? Look no further! In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: Vimpel783 | last post by:
Hello! Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.