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Old October 15th, 2005, 09:14 AM
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Default SqlDatasource filter using formview control

Hi there.

I am a newbie :), and am struggling with a formview problem.

Basically I have created a webform with an SQLDataSource that lists three values, an ID field (integer), URL field (Text) and description field. This is Querying a SQL table called "Images"

I have a FormView (FormView1) on the page, which is bound to another sqlDatasource (table "Pages"), one field of which is an ID field relating to an Image in the Images Table.

I have a List Control within the form view which displays a list of Image Discriptions from the first table, and returns the ID as its selected value.

I also have a gridview with a single ImageField sourced from a third SqlDataSource which is essentially the IMAGES table, filtered by a Listcontrol's selected item, this datasource supplies the actual physical url to the image file associated with a particular ID, that the GridView uses to display the image.

If I use a ListControl OUTSIDE the form view, each time I select an image, it is displayed in the Formview.

However, what I want to do is have the drop down list as a template control within the formview.

When I do this, and try to configure the datasource, I am unable to apply the "WHERE" filter to the SQL, either by using "control" as the templated form control is not displayed in the drop down list, OR by selecting form and enetering something like:

Ctype(Me.FormView1.FindControl("SelectImageListBox "),ListControl.SelectedValue.ToString Where "SelectImageListBox" is the name/ID of the ListBox control within the formview.

Basically I want to access a Formview's templated controls selected value and use it to filter an SqlDataSource

I would be very greatful for any help!

Many Thanks,


Old October 15th, 2005, 12:01 PM
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I might be a bit thick, but I had trouble understanding your question. Somehow, I can't see how this page will look like and what you're trying to accomplish.

Can you describe the structure of your page in more detail and maybe post some code?

Is the CType code what you're using right now or did you just type that in? You're missing an additional )

Imar Spaanjaars
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Old October 17th, 2005, 05:55 AM
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Thanks for the quick reply.

Basically what I was tring to do was to get a List control within a formview to filter the data from an SQLDataSource, and then use the filtered data to bind a url to an Image in a gridview within the form.

Since I could find no way of referencing the formview control when configuring the sqldatasource, I was stuck.

I have worked around by using the list control in the formview to set a value into a hidden field (using its onclick event), outside of the formview, and used this as the filter criteria for the SQLDatasource. It all works fine now :)

Thanks once again.


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