How do I pass a dataset to a webservices? I need to submit a shoppingcart
from a pocket PC to a webservice.
What is the right datatype?
II have tried dataset as a datatype, but I can't get it to compile.
<WebMethod()> _
Public Function VerifySku(ByVal skus As XmlDataDocument ) As DataSet
Test program :
Dim cartSet As DataSet
cartSet = ws.VerifySku(ca rtSet)
Error:
C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of type
'System.Data.Da taSet' cannot be converted to '1-dimensional array of
System.Object'.
22  25589 
You are probably better off using the DataSet's GetXML and ReadXML methods.
In other words, the web service returns the xml from a DataSet as a string.
This xml can then be very easily put back into a new DataSet.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E1******** *************** ***********@mic rosoft.com... How do I pass a dataset to a webservices? I need to submit a shoppingcart
from a pocket PC to a webservice.
What is the right datatype?
II have tried dataset as a datatype, but I can't get it to compile.
<WebMethod()> _
Public Function VerifySku(ByVal skus As XmlDataDocument ) As DataSet
Test program :
Dim cartSet As DataSet
cartSet = ws.VerifySku(ca rtSet)
Error:
C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of type
'System.Data.Da taSet' cannot be converted to '1-dimensional array of
System.Object'.
Scott,
That is the right answer to the wrong question. I you you read my question
you will find that I have a problem passing a dataset to a web services. I do
not have a problem returning a dataset from a web services.
Do you want to try again to get the right answer?
Arne
"Scott M." wrote: You are probably better off using the DataSet's GetXML and ReadXML methods.
In other words, the web service returns the xml from a DataSet as a string.
This xml can then be very easily put back into a new DataSet.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E1******** *************** ***********@mic rosoft.com... How do I pass a dataset to a webservices? I need to submit a shoppingcart
from a pocket PC to a webservice.
What is the right datatype?
II have tried dataset as a datatype, but I can't get it to compile.
<WebMethod()> _
Public Function VerifySku(ByVal skus As XmlDataDocument ) As DataSet
Test program :
Dim cartSet As DataSet
cartSet = ws.VerifySku(ca rtSet)
Error:
C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of type
'System.Data.Da taSet' cannot be converted to '1-dimensional array of
System.Object'.
Arne,
Wow! Thanks for the attitude. Do you want to try again and read my first
post and see that the answer you seek is in there?
Hint: "the DataSet's GetXML and ReadXML methods".
Perhaps you could think about what I wrote and try to see how it might fit
into your situation.
-Scott
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E7******** *************** ***********@mic rosoft.com... Scott,
That is the right answer to the wrong question. I you you read my question
you will find that I have a problem passing a dataset to a web services. I
do
not have a problem returning a dataset from a web services.
Do you want to try again to get the right answer?
Arne
"Scott M." wrote:
You are probably better off using the DataSet's GetXML and ReadXML
methods.
In other words, the web service returns the xml from a DataSet as a
string.
This xml can then be very easily put back into a new DataSet.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E1******** *************** ***********@mic rosoft.com... > How do I pass a dataset to a webservices? I need to submit a
> shoppingcart
> from a pocket PC to a webservice.
> What is the right datatype?
> II have tried dataset as a datatype, but I can't get it to compile.
> <WebMethod()> _
> Public Function VerifySku(ByVal skus As XmlDataDocument ) As DataSet
>
> Test program :
> Dim cartSet As DataSet
> cartSet = ws.VerifySku(ca rtSet)
>
> Error:
> C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of type
> 'System.Data.Da taSet' cannot be converted to '1-dimensional array of
> System.Object'.
>
>
Scott,
I reread your two posts, but I am not able to understand your answer. All I
am interested in is a datatype to use when sending a dataset to a web
services. Would that be an
XMLDocument
XMLElement
XMLDataDocument
String
or some other hocus pocus.
Arne.
"Scott M." wrote: Arne,
Wow! Thanks for the attitude. Do you want to try again and read my first
post and see that the answer you seek is in there?
Hint: "the DataSet's GetXML and ReadXML methods".
Perhaps you could think about what I wrote and try to see how it might fit
into your situation.
-Scott
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E7******** *************** ***********@mic rosoft.com... Scott,
That is the right answer to the wrong question. I you you read my question
you will find that I have a problem passing a dataset to a web services. I
do
not have a problem returning a dataset from a web services.
Do you want to try again to get the right answer?
Arne
"Scott M." wrote:
You are probably better off using the DataSet's GetXML and ReadXML
methods.
In other words, the web service returns the xml from a DataSet as a
string.
This xml can then be very easily put back into a new DataSet.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E1******** *************** ***********@mic rosoft.com...
> How do I pass a dataset to a webservices? I need to submit a
> shoppingcart
> from a pocket PC to a webservice.
> What is the right datatype?
> II have tried dataset as a datatype, but I can't get it to compile.
> <WebMethod()> _
> Public Function VerifySku(ByVal skus As XmlDataDocument ) As DataSet
>
> Test program :
> Dim cartSet As DataSet
> cartSet = ws.VerifySku(ca rtSet)
>
> Error:
> C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of type
> 'System.Data.Da taSet' cannot be converted to '1-dimensional array of
> System.Object'.
>
>
Arne,
If you have data in a DataSet, you have a couple of choices:
1. Just pass the entire DataSet object to a web service web method that
takes a DataSet as a parameter. (I don't recommend this approach if the
DataSet will be passed between 2 machines in the process because of
efficiency).
2. Use the DataSet.GetXML method (which returns an XML string representing
the DataSet) and pass that string to a web service web method. Then that
web method would declare a new DataSet and using the ReadXML method, it
could read the XML string into itself. You will need to load the XML string
into an XMLDocument and then pass it to an XMLNodeReader so that it can be
read into the DataSet using ReadXML.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:9E******** *************** ***********@mic rosoft.com... Scott,
I reread your two posts, but I am not able to understand your answer. All
I
am interested in is a datatype to use when sending a dataset to a web
services. Would that be an
XMLDocument
XMLElement
XMLDataDocument
String
or some other hocus pocus.
Arne.
"Scott M." wrote:
Arne,
Wow! Thanks for the attitude. Do you want to try again and read my
first
post and see that the answer you seek is in there?
Hint: "the DataSet's GetXML and ReadXML methods".
Perhaps you could think about what I wrote and try to see how it might
fit
into your situation.
-Scott
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E7******** *************** ***********@mic rosoft.com... > Scott,
> That is the right answer to the wrong question. I you you read my
> question
> you will find that I have a problem passing a dataset to a web
> services. I
> do
> not have a problem returning a dataset from a web services.
> Do you want to try again to get the right answer?
> Arne
>
> "Scott M." wrote:
>
>> You are probably better off using the DataSet's GetXML and ReadXML
>> methods.
>> In other words, the web service returns the xml from a DataSet as a
>> string.
>> This xml can then be very easily put back into a new DataSet.
>>
>>
>> "Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
>> news:E1******** *************** ***********@mic rosoft.com...
>> > How do I pass a dataset to a webservices? I need to submit a
>> > shoppingcart
>> > from a pocket PC to a webservice.
>> > What is the right datatype?
>> > II have tried dataset as a datatype, but I can't get it to compile.
>> > <WebMethod()> _
>> > Public Function VerifySku(ByVal skus As XmlDataDocument ) As
>> > DataSet
>> >
>> > Test program :
>> > Dim cartSet As DataSet
>> > cartSet = ws.VerifySku(ca rtSet)
>> >
>> > Error:
>> > C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of
>> > type
>> > 'System.Data.Da taSet' cannot be converted to '1-dimensional array of
>> > System.Object'.
>> >
>> >
>>
>>
>>
Scott,
Your second answer is very interesting and I will pursue it.
Your first answer doesn't compile on my computer.
Thanks.
Arne.
"Scott M." wrote: Arne,
If you have data in a DataSet, you have a couple of choices:
1. Just pass the entire DataSet object to a web service web method that
takes a DataSet as a parameter. (I don't recommend this approach if the
DataSet will be passed between 2 machines in the process because of
efficiency).
2. Use the DataSet.GetXML method (which returns an XML string representing
the DataSet) and pass that string to a web service web method. Then that
web method would declare a new DataSet and using the ReadXML method, it
could read the XML string into itself. You will need to load the XML string
into an XMLDocument and then pass it to an XMLNodeReader so that it can be
read into the DataSet using ReadXML.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:9E******** *************** ***********@mic rosoft.com... Scott,
I reread your two posts, but I am not able to understand your answer. All
I
am interested in is a datatype to use when sending a dataset to a web
services. Would that be an
XMLDocument
XMLElement
XMLDataDocument
String
or some other hocus pocus.
Arne.
"Scott M." wrote:
Arne,
Wow! Thanks for the attitude. Do you want to try again and read my
first
post and see that the answer you seek is in there?
Hint: "the DataSet's GetXML and ReadXML methods".
Perhaps you could think about what I wrote and try to see how it might
fit
into your situation.
-Scott
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:E7******** *************** ***********@mic rosoft.com...
> Scott,
> That is the right answer to the wrong question. I you you read my
> question
> you will find that I have a problem passing a dataset to a web
> services. I
> do
> not have a problem returning a dataset from a web services.
> Do you want to try again to get the right answer?
> Arne
>
> "Scott M." wrote:
>
>> You are probably better off using the DataSet's GetXML and ReadXML
>> methods.
>> In other words, the web service returns the xml from a DataSet as a
>> string.
>> This xml can then be very easily put back into a new DataSet.
>>
>>
>> "Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
>> news:E1******** *************** ***********@mic rosoft.com...
>> > How do I pass a dataset to a webservices? I need to submit a
>> > shoppingcart
>> > from a pocket PC to a webservice.
>> > What is the right datatype?
>> > II have tried dataset as a datatype, but I can't get it to compile.
>> > <WebMethod()> _
>> > Public Function VerifySku(ByVal skus As XmlDataDocument ) As
>> > DataSet
>> >
>> > Test program :
>> > Dim cartSet As DataSet
>> > cartSet = ws.VerifySku(ca rtSet)
>> >
>> > Error:
>> > C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value of
>> > type
>> > 'System.Data.Da taSet' cannot be converted to '1-dimensional array of
>> > System.Object'.
>> >
>> >
>>
>>
>>
Scott M. wrote: 2. Use the DataSet.GetXML method (which returns an XML string
representing the DataSet) and pass that string to a web service web
method. Then that web method would declare a new DataSet and using
the ReadXML method, it could read the XML string into itself. You
will need to load the XML string into an XMLDocument and then pass it
to an XMLNodeReader so that it can be read into the DataSet using
ReadXML.
Maybe I'm not reading this right, but are you proposing he send it as a string (xsd:string) rather than as a structured XML document? I hope not, because that approach would completely misses the point of XML altogether.
Now, technically you can make your web method signature take/return just DataSet and it should work since DataSet is IXmlSerializabl e. While this is nice that it "just works", it's not necessary optimal and you definitely haven't defined a strongly typed schema for the parameter of your web method. If this is purely a behind the scenes service and you don't expect any clients except your own, then basically you're done because maybe you don't care. However, if this is a service that you expect third parties to integrate with you should be defining a strongly typed schema which you then make sure that the DataSet correctly persists to.
HTH,
Drew
If you are interested in the first approach, just let me see your code for
the 2 methods and I'll bet we can make it work.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:98******** *************** ***********@mic rosoft.com... Scott,
Your second answer is very interesting and I will pursue it.
Your first answer doesn't compile on my computer.
Thanks.
Arne.
"Scott M." wrote:
Arne,
If you have data in a DataSet, you have a couple of choices:
1. Just pass the entire DataSet object to a web service web method that
takes a DataSet as a parameter. (I don't recommend this approach if the
DataSet will be passed between 2 machines in the process because of
efficiency).
2. Use the DataSet.GetXML method (which returns an XML string
representing
the DataSet) and pass that string to a web service web method. Then that
web method would declare a new DataSet and using the ReadXML method, it
could read the XML string into itself. You will need to load the XML
string
into an XMLDocument and then pass it to an XMLNodeReader so that it can
be
read into the DataSet using ReadXML.
"Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
news:9E******** *************** ***********@mic rosoft.com... > Scott,
> I reread your two posts, but I am not able to understand your answer.
> All
> I
> am interested in is a datatype to use when sending a dataset to a web
> services. Would that be an
> XMLDocument
> XMLElement
> XMLDataDocument
> String
> or some other hocus pocus.
> Arne.
>
> "Scott M." wrote:
>
>> Arne,
>>
>> Wow! Thanks for the attitude. Do you want to try again and read my
>> first
>> post and see that the answer you seek is in there?
>>
>> Hint: "the DataSet's GetXML and ReadXML methods".
>>
>> Perhaps you could think about what I wrote and try to see how it might
>> fit
>> into your situation.
>>
>> -Scott
>>
>>
>> "Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
>> news:E7******** *************** ***********@mic rosoft.com...
>> > Scott,
>> > That is the right answer to the wrong question. I you you read my
>> > question
>> > you will find that I have a problem passing a dataset to a web
>> > services. I
>> > do
>> > not have a problem returning a dataset from a web services.
>> > Do you want to try again to get the right answer?
>> > Arne
>> >
>> > "Scott M." wrote:
>> >
>> >> You are probably better off using the DataSet's GetXML and ReadXML
>> >> methods.
>> >> In other words, the web service returns the xml from a DataSet as a
>> >> string.
>> >> This xml can then be very easily put back into a new DataSet.
>> >>
>> >>
>> >> "Arne" <Ar**@discussio ns.microsoft.co m> wrote in message
>> >> news:E1******** *************** ***********@mic rosoft.com...
>> >> > How do I pass a dataset to a webservices? I need to submit a
>> >> > shoppingcart
>> >> > from a pocket PC to a webservice.
>> >> > What is the right datatype?
>> >> > II have tried dataset as a datatype, but I can't get it to
>> >> > compile.
>> >> > <WebMethod()> _
>> >> > Public Function VerifySku(ByVal skus As XmlDataDocument ) As
>> >> > DataSet
>> >> >
>> >> > Test program :
>> >> > Dim cartSet As DataSet
>> >> > cartSet = ws.VerifySku(ca rtSet)
>> >> >
>> >> > Error:
>> >> > C:\Projects\Sho ppingCartWeb\Sh oppingCartTest\ Test.vb(37): Value
>> >> > of
>> >> > type
>> >> > 'System.Data.Da taSet' cannot be converted to '1-dimensional array
>> >> > of
>> >> > System.Object'.
>> >> >
>> >> >
>> >>
>> >>
>> >>
>>
>>
>>
This approach works for passing the DataSet schema as well. We can the
DataSet's GetXML and we can use the DataSet's GetXMLSchema to send and then
we can use the DataSet's ReadXMLSchema as well as ReadXML to re-populate.
"Drew Marsh" <dr****@hotmail .no.spamming.co m> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Scott M. wrote:
2. Use the DataSet.GetXML method (which returns an XML string
representing the DataSet) and pass that string to a web service web
method. Then that web method would declare a new DataSet and using
the ReadXML method, it could read the XML string into itself. You
will need to load the XML string into an XMLDocument and then pass it
to an XMLNodeReader so that it can be read into the DataSet using
ReadXML.
Maybe I'm not reading this right, but are you proposing he send it as a
string (xsd:string) rather than as a structured XML document? I hope not,
because that approach would completely misses the point of XML altogether.
Now, technically you can make your web method signature take/return just
DataSet and it should work since DataSet is IXmlSerializabl e. While this
is nice that it "just works", it's not necessary optimal and you
definitely haven't defined a strongly typed schema for the parameter of
your web method. If this is purely a behind the scenes service and you
don't expect any clients except your own, then basically you're done
because maybe you don't care. However, if this is a service that you
expect third parties to integrate with you should be defining a strongly
typed schema which you then make sure that the DataSet correctly persists
to.
HTH,
Drew This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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