Repeater control in a web user control

[bill]

I have a Repeater control in a web user control.

The web user control has a public method named PopulateRepeater which takes
an ID as an parameter and populates the repeater control based on the
parameter.

When I call PopulateRepeater from the User Control page_load event it
populates the repeater without a problem.

When I call PopulateRepeater from a procedure in the web form which contains
the user control, I get an error in PopulateReader (which is in the User
Control code behind module):

Sub PopulateRepeater (iID as integer)
dim ds as DataSet = GetDataSet(iID)
Repeater1.DataSource = ds ' causes error "Object reference not set
to an instance of an object"
Repeater1.DataBind
Exit Sub

 

[Kevin Spencer]

Apparently, the method called is not returning a DataSet.

--
HTH,

Kevin Spencer
Microsoft MVP
Professional Numbskull

Show me your certification without works,
and I'll show my certification
*by* my works.

 

[bill]

It's not the dataset, its the Repeater which is 'nothing'.

I found the reason - the way a web user control is declared is different in
VS2005 than VS2003, I guess because of the partial class structure of the
web forms..

In VS2005, I find you just go ahead and call the user control directly using
its ID -- without creating an object variable--in order to call it's methods
from the host code behind:
ucUserControl1.PopulateRepeater

In VS 2003, the user control first had to be declared in the host code
behind in order to call its methods:
Protected ucUserControl1 as New ucUserControl

If you do this in VS2005, you get an error
"ucUserControl1 already declared as... in this class"
so I was using
dim ucUserControl1 as new ucUserControl
and getting the "Object reference not set to an instance of an object"
error.

I'm still getting used to partial classes.

 

[Kevin Spencer]

Glad you got it sorted out!

--
HTH,

Kevin Spencer
Microsoft MVP
Professional Numbskull

Show me your certification without works,
and I'll show my certification
*by* my works.

 

[bill]

Thanks!

Glad you got it sorted out!

--
HTH,

Kevin Spencer
Microsoft MVP
Professional Numbskull

Show me your certification without works,
and I'll show my certification
*by* my works.