R – ASP.NET – ObjectDataSource: using multi-select ListBox as ControlParameter

asp.netlistboxobjectdatasource

I have a form that contains a GridView control which is databound to an ObjectDataSource Control. There are several TextBox controls that are already being used as ControlParameters for the ObjectDataSource. I also have a custom data object that the ObjectDataSource is associated with {TypeName="myDataClass"}. The values are passed from the ObjectDataSource to myDataClass.

Now I need to also use a multi-select ListBox as a ControlParameter. When I use the SelectedValue parameter of the ListBox, the ObjectDataSource is only seeing the first selected item in the list.

Here's the question: How can I get all the multi-select ListBox values passed into my custom object "myDataClass" instead of just the first one selected? Hence the ["multi-select"]

Thanks for any help!

Best Answer

Multi-select list boxes are tricky. You need to loop through the items in code to build a list of selected values. So you will probably need to implement a custom parameter that does this for you.

You might end up needing to bind to the grid from code-behind, instead of doing it declaratively.

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what I needed to do was to remove/replace the

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