Detecting empty CheckBoxList without data

[dbuchanan]

How, at rundime, do I capture the fact that the parametrized query that
fills a CheckBoxList results in an empty set. When the dataset is empty the
CheckBoxList does not appear. I would like to properly inform the user of
the fact.

How is ths done?

Thank you,
Doug

[Steven Cheng [MSFT]]

RE: Detecting empty CheckBoxList without data

Hi Doug,

Is this issue and continous one from the previous checkbox list query one?
I think you've now be able to query the data based on the checkboxlist's
selection status, and your current difficulty is how to do some
customization on the page depend on whether the returened query result is
empty or not, correct?

If this is the case, would you show me the code on how to query the result
and how to bind it to the databound control(DataGri d or Gridview) or are
you still using a SqlDataSource control?

If you are programmtically call ADO.NET SqlCommand or TableAdapdter to get
the DataSet, I think you can set the CheckBoxList.Vi sible to false in your
code after check whether the returned DataTable is empty.

If you're using SqlDataSource control, I think you may register its
"Selected" event, and use the "AffectedRo ws" parameter propertyto determine
whether there is any row get returned. e.g.

===============
protected void SqlDataSource1_ Selected(object sender,
SqlDataSourceSt atusEventArgs e)
{
Response.Write( "<br/>AffectedRows : " + e.AffectedRows) ;
}
=============== ==

If there is anything I have omited or if you have any parituclar
requirement, please feel free to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
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--------------------

>From: "dbuchanan" <dbuchanan@news group.nospam>
>Subject: Detecting empty CheckBoxList without data
>Date: Thu, 12 Jun 2008 01:12:38 -0400

>
>How, at rundime, do I capture the fact that the parametrized query that
>fills a CheckBoxList results in an empty set. When the dataset is empty

the

>CheckBoxList does not appear. I would like to properly inform the user of
>the fact.
>
>How is ths done?
>
>Thank you,
>Doug
>
>
>

[dbuchanan]

Re: Detecting empty CheckBoxList without data

Thank you Steve this works great.

Doug

[Steven Cheng [MSFT]]

Re: Detecting empty CheckBoxList without data

You're welcome Doug,

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsof t.com.

=============== =============== =============== =====
Get notification to my posts through email? Please refer to

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif

ications.

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

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

>From: "dbuchanan" <dbuchanan@news group.nospam>
>References: <#2O#CqEzIHA.40 40@TK2MSFTNGP04 .phx.gbl>

<i9GI#mFzIHA.17 84@TK2MSFTNGHUB 02.phx.gbl>

>Subject: Re: Detecting empty CheckBoxList without data
>Date: Fri, 13 Jun 2008 14:55:58 -0400
>
>Thank you Steve this works great.
>
>Doug
>
>
>