Re: Setting id in a dynmaically generated checkboxlist
From: Eirik Eldorsen (eirik_at_NO__SPAM__eldorsens.nettsider.no)
Date: 11/15/04
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Date: Mon, 15 Nov 2004 23:58:15 +0100
Thank you so much for the help :-D
It was a stupid bug. I forgot the where clause in my select statment :-)
"SELECT * " +
"FROM Elementes " +
"WHERE CategoriID = " + id +
"Scott Allen" <bitmask@[nospam].fred.net> wrote in message
news:p9bip0pl64deh56qm59lc96qpmu9eck2g6@4ax.com...
> >
>>For each listitem in the repeater I want write out Title, Explenation, and
>>a
>>checkboxlist containing the elementtext's. If i use a static name on the
>>checkboxlistid, every checkboxlist get all the elements. This is not what
>>I
>>want. I could use a hidde nfield to contain the id, but I still need a
>>uniqe
>>name for eah checkboxlist.
>>
>
> That's interesting - the ID of the control should not change the
> databinding behavior in any way. Here is an example (apologies for any
> wierd line breaks):
>
> <form id="Form1" method="post" runat="server">
> <table>
> <asp:Repeater ID="Repeater1" Runat="server">
> <ItemTemplate>
> <tr>
> <td><%# DataBinder.Eval(Container.DataItem, "Title") %></td>
> <td><%# DataBinder.Eval(Container.DataItem, "Explanation")
> %></td>
> <td>
> <asp:CheckBoxList ID="CheckBoxList1" Runat="server"
> DataSource='<%#DataBinder.Eval(Container.DataItem, "Elements")
> %>'
> DataTextField="Name">
> </asp:CheckBoxList>
> </td>
> </tr>
> </ItemTemplate>
> </asp:Repeater>
> </table>
> </form>
>
>
> The code behind this form is:
>
> using System;
> using System.Collections;
> using System.ComponentModel;
> using System.Data;
> using System.Drawing;
> using System.Web;
> using System.Web.SessionState;
> using System.Web.UI;
> using System.Web.UI.WebControls;
> using System.Web.UI.HtmlControls;
>
> namespace aspnet.repeaters
> {
> public class checkboxlist : System.Web.UI.Page
> {
> protected Repeater Repeater1;
>
> private void Page_Load(object sender, System.EventArgs e)
> {
> if(!Page.IsPostBack)
> {
> Category[] categories = GetCategories();
> Repeater1.DataSource = categories;
> Repeater1.DataBind();
> }
> }
>
> private Category[] GetCategories()
> {
> Category[] categories = new Category[3];
>
> for(int i = 0; i < categories.Length; i++)
> {
> categories[i] = GetCategory(i);
> }
>
> return categories;
> }
>
> private Category GetCategory(int i)
> {
> string title = i.ToString() + "CatTitle";
> string ex = i.ToString() + "Explanation";
> Element[] elements = GetElements(i);
>
> return new Category(title, ex, elements);
> }
>
> private Element[] GetElements(int i)
> {
> Element[] elements = new Element[i + 2];
>
> for(int j = 0; j < elements.Length; j++)
> {
> elements[j] = new Element(i.ToString() + j.ToString()
> + "Element");
> }
>
> return elements;
> }
>
> #region Web Form Designer generated code
> override protected void OnInit(EventArgs e)
> {
> InitializeComponent();
> base.OnInit(e);
> }
>
> private void InitializeComponent()
> {
> this.Load += new System.EventHandler(this.Page_Load);
> }
> #endregion
> }
>
> class Category
> {
> public Category(string title, string explanation,
> Element[] elements)
> {
> this.title = title;
> this.explanation = explanation;
> this.elements = elements;
> }
>
> public string Title
> {
> get { return title; }
> }
>
> public string Explanation
> {
> get { return explanation; }
> }
>
> public Element[] Elements
> {
> get { return elements; }
> }
>
> private string title;
> private string explanation;
> private Element[] elements;
> }
>
> class Element
> {
> public Element(string name)
> {
> this.name = name;
> }
>
> public string Name
> {
> get { return name; }
> }
>
> private string name;
> }
> }
>
>
> What I'll get is a Repeater with three rows. Each row has a
> CheckBoxList with different elements displayed (and they all have
> unique client IDs).
>
> --
> Scott
> http://www.OdeToCode.com/blogs/scott/
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