Need help with Repeater data binding question...

[Milsnips]

hi there,

i have a page with a repeater that is populated with my function called
GetList, that returns an arraylist of my custom object, lets say its called
Products{ProductID, Description, Price}

Now, if the datasource of the repeater is something like DataSet or
SQLDataReader and i'm returning the records, not the arraylist of "Products"
objects, in the aspx code i can use <%#
Container.DataItem("ProductID")%>....

How can i show the data in this forn <%# Container.Dataitem.....etc.%> so i
can read the Property value, eg. Products.Description, or Products.Price??

thanks for anyone's help.
Paul

 

[kferron]

Well, i'm not sure why people are still using ArrayList for
datasources, but you would be having a much easier time if you used
something typesafe, like Collection<Product> or List<Product>

The reason the databinder evaluations are failing is because it has no
idea what kind of type is stored in the arraylist, since theyre only
stored as objects.

 

[Karl Seguin [MVP]]

The databinding expressions are pretty smart..

you can actually do:

<%# DataBinder.Eval(Container.DataItem "Description") %> and it'll work (or
the short-hand Eval in 2.0)

you could always cast it directly:

<%# ((Product)Container.DataItem).Description %>

Karl

 

[Milsnips]

hi there,

i tried them both, with no success..
i used this line: <%# DataBinder.Eval(Container.DataItem, "Comment") %>

my error returned is: Exception Details: System.Web.HttpException:
DataBinder.Eval: 'Kolesino2006.PhotoAlbum+Photo' does not contain a property
with the name CommentID.

my class is called Photo, and it has readonly propertyies CommentID,
Comment, and so on.

thanks,
Paul


"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME
net> wrote in message news:[email protected]...

 

[Karl Seguin [MVP]]

Is it a property or a field???


public string CommentID

or

public string CommentId
{
get {return _commentId;}
}


?

The 1st won't work...

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/

hi there,

i tried them both, with no success..
i used this line: <%# DataBinder.Eval(Container.DataItem, "Comment") %>

my error returned is: Exception Details: System.Web.HttpException:
DataBinder.Eval: 'Kolesino2006.PhotoAlbum+Photo' does not contain a
property with the name CommentID.

my class is called Photo, and it has readonly propertyies CommentID,
Comment, and so on.

thanks,
Paul


"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME
net> wrote in message news:[email protected]...

 

[kferron]

so photo is an inner class to PhotoAlbum?

when you say readonly property, do mean a property with only a getter
or are you attempting to bind directly to a public field?

 

[Milsnips]

Hi,

yes it is a declared property, as such:
Private _comment As String

ReadOnly Property Comment() As String
Get
Return _comment
End Get
End Property

And to the other question from "kferron", yes its a class within another, so
"PhotoAlbum.Photo"

Also, if i just do <%# Container.DataItem%> it returns me
"mynamespace.PhotoAlbum+Photo" so it can see the object in the dataitem i
guess.

regards,
Paul


"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME
net> wrote in message news:[email protected]...