Data Access and ObjectDataSource Control

Re: DropDownList based on data Control inside another Control

emmav — Tue, 28 Nov 2006 07:36:45 GMT

What I couldn't do with FindControl I could do with this function:

1      protected static Control FindControlRecursive(string Id, Control Root)
2      {
3        if (Root.ID == Id)
4          return Root;
5    
6        foreach (Control Ctl in Root.Controls)
7        {
8          Control FoundCtl = FindControlRecursive(Id, Ctl);
9          if (FoundCtl != null)
10           return FoundCtl;
11       }
12       return null;
13     }

(lifted from http://www.west-wind.com/WebLog/posts/5127.aspx) and using

1    DropDownList Customer = FindControlRecursive("KundeDropList", FormView1) as DropDownList;

And setting selectedvalue manually.

Thanks for your help cwlaualex! (That's quite a nick, does it mean anything? Different language?)

Re: DropDownList based on data Control inside another Control

cwlaualex — Tue, 28 Nov 2006 02:33:23 GMT

Maybe you need to post some of your code here. The FindControl function should return the required DropDownList.

Re: DropDownList based on data Control inside another Control

emmav — Mon, 27 Nov 2006 07:53:00 GMT

By doing it programatically rather than using the designer?

I tried using FindControl as in:

DropDownList Customer = (DropDownList) FormView1.FindControl("KundeDropList");

But it won't have any of it, saying "Object reference not set to an instance of an object."

Re: DropDownList based on data Control inside another Control

cwlaualex — Sat, 25 Nov 2006 02:11:59 GMT

Do you use FormViewName.FindControl to locate your second DDL? You need to use FindControl for every controls inside the FormView.

DropDownList based on data Control inside another Control

emmav — Fri, 24 Nov 2006 14:45:15 GMT

Ok, so I have a FormView with a Customer dropdown, and a Location dropdown. The Location dropdown is dependant on the Customer dropdown.

"Easy," I think. But no. The Location drop down works when it and the Customer dropdown is placed outside the Formview. But when they are both inside the formview they don't as they aren't in the right scope(or whatever). I've tried CustomerDropDown, but to no avail.

Anyone have any ideas on how to manage this?