Another similar question, but with a UserControl.
<asp:datalist id="ProdList" runat="server" DataKeyField="productTypeID" OnItemCommand="ProdList_ItemCommand">
<ItemTemplate>
<nolimitengin:AlsoBought id="AlsoBought1" runat="server"></nolimitengin:AlsoBought>
<BR>
<asp:Button id="Button2" runat="server" CssClass="ProductListButton" ToolTip="Show/Hide Details" Width="65px" Text="Details" CommandName="also"></asp:Button>

In the attached .aspx code page is:
public UserControl itemBought;

public void ProdList_ItemCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e) {
// using that index, get a handle on the UserControl
UserControl itemBought = (UserControl)ProdList.Items[ProdList.SelectedIndex].FindControl("AlsoBought1");
. . . .
itemBought.alsoBoughtList.DataSource = productCatalogue.GetProductsAlsoPurchased(productT ypeID1, sqlConnectionType);

and in the UserControl pages _AlsoBought.ascx.cs is
protected System.Web.UI.WebControls.Repeater alsoBoughtList;
protected System.Web.UI.WebControls.HyperLink LinkBought;


and when I run this it gives an error saying itemBought does not have an .alsoBoughtList.

Why doesn't this work? What should the code be to obtain a handle to the repeater and it's hyperlink?

Thanks in advance for your help.


Sandy

__________________
Sandy

This question never did come up in the active list.

Sandy

It is in the active list now (whether or not it was before).

----------
---Snib---
----------

<><

Hi Sandy,

It looks like you are casting your AlsoBought1 control to a generic UserControl control. Of course, a User Control does not know anything about a alsoBoughtList property.
You'll need to cast your control to its original type:

MyCoolListControl itemBought = (MyCoolListControl)ProdList.Items[ProdList.SelectedIndex].FindControl("AlsoBought1");

(Assuming the type of your control is MyCoolListControl)

Does this help?

Imar


---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.

I've tried changing
public UserControl itemBought;
to
public AlsoBought1 itemBought; produces Error "The type or namespace could not be found"

And I've tried changing
UserControl itemBought = (UserControl)ProdList.Items[ProdList.SelectedIndex].FindControl("AlsoBought1");
to
AlsoBought1 itemBought = (AlsoBought1)ProdList.Items[ProdList.SelectedIndex].FindControl("AlsoBought1");produces Error "The type or namespace could not be found"


The .aspx file contains, at the top:
<%@ Register TagPrefix="NoLimitEngin" TagName="AlsoBought" Src="_AlsoBought.ascx" %>
and inside the DataList
<nolimitengin:AlsoBought id="AlsoBought1" runat="server"></nolimitengin:AlsoBought>



Sandy

Hi Sandy,

You shouldn't cast it to the instance name of the control, but to the type name. Of the class name of the control is AlsoBought, then you should cast it to AlsoBought, and not to AlsoBought1:

public AlsoBought1 itemBought; produces Error "The type or namespace could not be found"

AlsoBought itemBought = (AlsoBought) ProdList.Items[ProdList.SelectedIndex].FindControl("AlsoBought1");

This way, you cast the Control instance called AlsoBought1 to a Control type named AlsoBought.

Cheers,

Imar


---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.

Imar,

AlsoBought itemBought = (AlsoBought)ProdList.Items[ProdList.SelectedIndex].FindControl("AlsoBought1");

produces the same error.

And the declarations:
public AlsoBought AlsoBought1;
public AlsoBought itemBought;
public AlsoBought1 itemBought; and
public AlsoBought1 AlsoBought;
produces the same error.

In fact, the only declaration I can make up that does not produce that error is:
public UserControl itemBought;

I understand that UserControl itself does not have a AlsoBoughtList, but so far nothing does.



Sandy

Well, you should be able to cast the UserControl back to its own appropriate type.

Are you sure both controls are in the same namespace?
You can easily check that by looking at the code behind for for your control. You'll see the Namespace and the Class (like public AlsoBought : System.Web......). Make sure that the current page can *see* the User Control; e.g. they are either in the same namespace, or the page uses a using statement to import the namespace where the control lives.

If that doesn't help, can you post a part of the code for the User Control? That is, just the general skeleton, not the implementation?

Cheers,

Imar


---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.

Imar, I really appreciate your help. The .ascx.cs page has:
using System.Web.UI.WebControls;

namespace NoLimitEngin
{
    public abstract class C_AlsoBought : System.Web.UI.UserControl
    {
        protected System.Web.UI.WebControls.Repeater alsoBoughtList;
        protected System.Web.UI.WebControls.HyperLink LinkBought;
        public int ProductTypeID;
. . . . .
and no real code in it. The .aspx.cs page has:
using System.Web.UI.WebControls;

namespace NoLimitEngin
{
    public class ProductsList : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.DataList ProdList;
        public UserControl itemBought;
        public DataGrid itemGrid;
. . . .
So far there's no code in the UserControl. I'm still trying to get it to exist and compile and run.


Sandy

Hi Sandy,

Why are you using an abstract class for the User Control? At what point or location are you deriving from this class?

Usually, you'll use something like this in the Code Behind for the User Control:

public class MyControl : System.Web.UI.UserControl

This way, the type of your control is MyControl.

In your situation, your abstract class is called C_AlsoBought, so I would expect another control to derive from it, like this:

public class AlsoBought : C_AlsoBought
{
  // Implementation for non-abstract, implementing class here
}

Then in your ASPX pages, you would use AlsoBought as the type of the control.

However, I don't see the need for this abstract class (although I may be overlooking something). Instead, in your User Control, have a normal class called AlsoBought that directly derives from UserControl. Implement behavior for this class directly.
In your ASPX pages, use this type for your user control, like this:

public AlsoBought itemBought;

HtH,

Imar


---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.