Persisting collection

[kw]

The following WebControl contains a collection. On Page PostBack, the
collection is lost. I'm not sure how to persist this. Any ideas?

public class Grid: System.Web.UI.WebControls.WebControl
{
....
public ColumnCollection Columns{get{...}}
....
}
public class ColumnCollection : IDictionary, ICollection, IEnumerable,
ICloneable{...}

 

[Teemu Keiski]

Hi,

you would need to develop a state management mechanism for the collection.
It means implementing viewstate saving, loading and tracking for the
collection (which consists of simlar functionality for collection items)
using IStateManager interface. I've written an example of such at ASp.NET
Forums, if you want to check it out:

http://www.asp.net/Forums/ShowPost.aspx?tabindex=1&PostID=225520

 

[kw]

Thanks, I got it working now, but a new problem came up.

The custom WebControl that creates an array of textboxes (naming them
dynamically), for example:

<INPUT id="c0r0" type="text" runat=server value="Item A" ><INPUT id="c1r0"
type="text" runat=server value="100" ><br>

Now let's say the user changed the value of c1r0 to from '100' to '200' and
clicks an 'Update' button. In the Page_Load postback, none of the controls
are accessible.

How can I access the value of the text input element c1r0?

Or do you think I'm going about this the wrong way?

Thanks!

Dan

 

[Juno]

Hi,

try this: youcontrol.controls(0). It returns the first control in your
coustom webcontrol.Then you can convert it to textbox web control.