XML WebSvc Proxy Code Syntax Questions

[rJ]

I performed wsdl on SQL2000 reporting service and have a question regarding
the following proxy class. Right before render procedure declaration you
have code that looks like html or xml. What is this, how does compiler and
application interpret at run time, and how do I read it and understand what
I should specify if I were to write something similar.

Also, the public function declaration has a return value of
As <System.Xml.Ser ialization.XmlE lementAttribute ("Result",
DataType:="base 64Binary")> Byte().
What does this mean? Thank you.


<BEGIN SNIPPET>
..
..
..
<System.Web.Ser vices.Protocols .SoapHeaderAttr ibute("SessionH eaderValue",
Direction:=Syst em.Web.Services .Protocols.Soap HeaderDirection .InOut),
_System.Web.Ser vices.Protocols .SoapHeaderAttr ibute("ServerIn foHeaderValue",
Direction:=Syst em.Web.Services .Protocols.Soap HeaderDirection .Out),
_System.Web.Ser vices.Protocols .SoapDocumentMe thodAttribute(" http://schemas.microso ft.com/sqlserver/2003/12/reporting/reportingservic es/Render"
& _"",
RequestNamespac e:="http://schemas.microso ft.com/sqlserver/2003/12/reporting/reportingservic es",
ResponseNamespa ce:="http://schemas.microso ft.com/sqlserver/2003/12/reporting/reportingservic es",
Use:=System.Web .Services.Descr iption.SoapBind ingUse.Literal,
ParameterStyle: =System.Web.Ser vices.Protocols .SoapParameterS tyle.Wrapped)> _
Public Function Render(ByVal Report As String, ByVal Format As String, ByVal
HistoryID As String, ByVal DeviceInfo As String, ByVal Parameters() As
ParameterValue, ByVal Credentials() As DataSourceCrede ntials, ByVal
ShowHideToggle As String, ByRef Encoding As String, ByRef MimeType As
String, ByRef ParametersUsed( ) As ParameterValue, ByRef Warnings() As
Warning, ByRef StreamIds() As String) As
<System.Xml.Ser ialization.XmlE lementAttribute ("Result",
DataType:="base 64Binary")> Byte()

Dim results() As Object = Me.Invoke("Rend er", New Object() {Report,
Format, HistoryID, DeviceInfo, Parameters, Credentials, ShowHideToggle} )
Encoding = CType(results(1 ), String)
MimeType = CType(results(2 ), String)
ParametersUsed = CType(results(3 ), ParameterValue( ))
Warnings = CType(results(4 ), Warning())
StreamIds = CType(results(5 ), String())
Return CType(results(0 ), Byte())
End Function.
..
..
..

[Kevin Yu [MSFT]]

RE: XML WebSvc Proxy Code Syntax Questions

Hi RJ,

We have reviewed this issue and are currently researching on it. We will
update you ASAP. Thanks for your patience!

Kevin Yu
=======
"This posting is provided "AS IS" with no warranties, and confers no
rights."

[Kevin Yu [MSFT]]

RE: XML WebSvc Proxy Code Syntax Questions

Hi RJ,

These are the attributes in the <>. They defines how your objects are
serialized to SOAP. You can try to search in MSDN for each attribute name,
like SoapHeaderAttri bute, to see what it stands for.

For example, XmlElementAttri bute indicates that a public field or property
represents an XML element when the XmlSerializer serializes or deserializes
the object that contains it.

XmlElementAttri bute("Result", DataType:="base 64Binary")> means the property
will be serialized to an xml element. The name for the element is "Result",
and its value is serialized to a base64Binary string.

Kevin Yu
Microsoft Online Community Support

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