Error : Complex DataBinding accepts as a data source either an IList or an IListSource

[BS]

Hello everybody

I'm calling a webservice that returns complex data.
The goal is to populate a datagrid with it.

Using a loop for each record found ( such as For i = 0 To
oResponse.historicalData.Length - 1 )
no problem to load a datagrid.

However, when I try to bind directly the datasource to the web service
complex datatype, I have the following error:
Complex DataBinding accepts as a data source either an IList or an
IListSource

Any idea what I have to do to the webservice records in order for my
datagrid to load ?


Here is the code used to pupulate the grid.

Dim oES As SomeWebservice.EquipmentService = New
SomeWebservice.EquipmentService
Dim oResponse As SomeWebservice.responseHistoricalData = New
SomeWebservice.responseHistoricalData


'set response object with service response
oResponse = oES.historicalData(oRequest)

DataGrid1.DataSource = oResponse

 

[Ken Tucker [MVP]]

Hi,

You can an arraylist, collection, or array to a datagrid. Any
poperties in a class contained in class stored in one of the above will be
shown in the datagrid. What format are you getting you data in?

Ken

 

[BS]

Hello
I posted a "short" version of the definition on the "webservice" newsgroup.

http://www.google.com/groups?hl=en&lr=&ie=UTF-8&[email protected]

Thank you for your help

 

[Ken Tucker [MVP]]

Hi,

What is the format of this. I need to know more about
responseHistoricalData

Dim oResponse As SomeWebservice.responseHistoricalData = New
SomeWebservice.responseHistoricalData

Ken

 

[BS]

Here is the definitions: They are most of the time "complex data type".

----------------------------------------------------------------------------
---------------------------------------------------------
'<remarks/>

<System.Xml.Serialization.XmlTypeAttribute([Namespace]:="http://www.XXXXXX.c
om/integration/2.0")> _

Public Class responseHistoricalData

Inherits LegacyApiOutput


'<remarks/>

<System.Xml.Serialization.XmlElementAttribute("historicalData")> _

Public historicalData() As historicalData

End Class
----------------------------------------------------------------------------
---------------------------------------------------------

'<remarks/>

<System.Xml.Serialization.XmlTypeAttribute([Namespace]:="http://www.XXXXXX.c
om/integration/2.0")> _

Public Class historicalData


'<remarks/>

Public equipmentID As String


'<remarks/>

Public terminalID As String


'<remarks/>

Public arrivalTimestamp As String


'<remarks/>

Public position As positionAndProximityWithTimestamp


'<remarks/>

Public serviceMeterHours As serviceMeterHoursWithTimestamp

End Class



----------------------------------------------------------------------------
---------------------------------------------------------

'<remarks/>

<System.Xml.Serialization.XmlTypeAttribute([Namespace]:="http://www.XXXXXX..
com/integration/2.0")> _

Public Class positionAndProximityWithTimestamp

Inherits positionWithTimestamp


'<remarks/>

<System.Xml.Serialization.XmlElementAttribute("proximity")> _

Public proximity() As proximity

End Class

----------------------------------------------------------------------------
---------------------------------------------------------



'<remarks/>

<System.Xml.Serialization.XmlTypeAttribute([Namespace]:="http://www.XXXXXX..
com/integration/2.0")> _

Public Class proximity


'<remarks/>

Public type As proximityType


'<remarks/>

Public location As String


'<remarks/>

Public [region] As String


'<remarks/>

Public postalCode As String


'<remarks/>

<System.Xml.Serialization.XmlElementAttribute("kilometersFromLocation",
GetType(System.Decimal)), _

System.Xml.Serialization.XmlElementAttribute("milesFromLocation",
GetType(System.Decimal)), _

System.Xml.Serialization.XmlChoiceIdentifierAttribute("ItemElementName")> _

Public Item As Decimal


'<remarks/>

<System.Xml.Serialization.XmlIgnoreAttribute()> _

Public ItemElementName As ItemChoiceType1


'<remarks/>

Public directionFromLocation As proximityDirection

End Class



----------------------------------------------------------------------------
---------------------------------------------------------

 

[Ken Tucker [MVP]]

Hi,


First off if you can only bind to properties in a class class
not public variables.

For example change
Public equipmentID As String

To
Private mstr_equipmentId As String

Public Property equipmentID() As String
Get
Return mstr_equipmentId
End Get
Set(ByVal Value As String)
mstr_equipmentId = Value
End Set
End Property

Second Try loading the data into an arraylist and bind to that.

oResponse = oES.historicalData(oRequest)
dim arBindto as new ArrayList
arBindto.Add(oResponse)
DataGrid1.DataSource = arBindto

Hope that helps.

Ken
-------------------

 

[BS]

Thank you Ken,

yes I already tried your suggestion of creating a "buffer" class for each
webservices functions called.
It works very well.

But that method did not seems efficient to me...add a new layer in between
the 2.Also, I should maybe mention that we do not have control to the web
service definitions...we did not write it. I have to use it as is.

But if that is the only solution...

Thank you very much for your help !

 

[Cor Ligthert]

HI BS,

In my opinion is the solution Ken advises you is not inefficient however
very sufficient.

Cor