Hello,

I was hoping someone could shed some light on this situation.

I have a RadPageView with a RadListControl inside.  The list control is populated from a sql table that contains potential 'status' setting for a recordset that is filling a RadGridView also on the same page.  I have the list control MultiSelect set to 'Simple'. The idea is a fast, multi-select filter for the radgrid.

So as with most issues, 90% works great.  Using RadListControl1.SelectedIndexChanged as my event handler I am able to create a filter for the radgrid using OR to allow filtering for multiple status at one time.   If the user clicks status 'a' then status 'b' then status 'c' the Radgrid filters and only shows 'A',then adds 'B',then 'C'.  Perfect! (status LIKE 'A' or status LIKE 'B' or status LIKE 'C' is  the expression I end up with, again perfect)

Here is where is problem lies.  When a user un-selects items in the RadListControl in reverse order (Add, A,B,C then Remove C,B,A) things seem to work, the event handler fires properly.  However, if the user un-selects items in any other order the event wont fire (Add A,B,C  then unselect A,B,C).  I'm guessing this is by design.  Although I have a loop with a message box showing the RadLIstControl items each time the event fires (for debugging).  I don't know if this might have some unseen effect on the control.

So I am wondering, is there a solution for this situation, either using the RadListControl (it's fast) or would there be a better method, I just can't seem to get my head around this one.  My code is in VB if that matters.

Thanks in advance!

Dean.

Hi Richard,

Thanks for the input.

Just so I know, based on what I see, the first snippet manually adds an event handler to each item in the ListControl on the form load.  The second is the Sub that gets called. I notice there isn't a 'handles' in the sub, I guess this isn't necessary since the event handler is called directly?

So far your suggestion is working well.  I noticed the selecteditems.count() isn't accurate at the time this event fires though;  for example, I show a count of 2 when I have one selected.  I can figure out a workaround but is there another method related to your solution to iterate the selected collection?

Thanks again! 

Dean.

Here is an example of the code I am working on. I rem'ed out the the loop that wasn't working for debugging.  I tried both 1 and 0 for the loop.

Hi Dean,

No, you don't need a Handler for those that have had an event handler manually added.
The reason that the items count seems incorrect on the de-selection is because when you message out the selection the prioperty has changed but appear still to be selected.
You can get over this with the following
Declare a private int


Hope thast helps but let me know if you need anything else
Richard

Hey Richard,

That did make the count correct but I still keep hitting a brick wall.

Let me ask this; What is the best way to add/remove a filter to a datagrid using a ListControl with multiple simple select?  

Thanks again for the assistance!

Dean.

This is what I have so far but it seems the event is called several times and i am at a loss.

Hey Richard,

Thanks again for the assistance. The last example was great!

I decided with a hybrid of your original offering.  I like the filter method for RadGrid I was using (mainly because I understood it), it was the functionality of standard listcontrol event handler that was holding me up.

Your first example really solved the problem.  It provided me with an accurate representation of the events going on with the listcontrol. Taking that data, I created a second Sub that will handle popping the stack (an array) and then i'll build a new set of filters. It's a bit old school but should do the trick. It also let's me add other fields besides status to the filters.

Something like this.



Thanks again, 

Dean.

Hey Richard,

Here is my final code I came up with.  So far it seems to work. Thanks again, couldn't have gotten this far without your help!

Hi Dean,

Glad that you have this all sorted now. I'm glad i could help. It's also good to get some feedback and see your final version. Nothing wrong with it, but do have a look at the demos on your PC too for the Custom Filtering. The custom filtering is quite simple but powerful and is really useful for these situations which you may find useful in the future. Anyway, glad you have it all working now.
All the best
Richard