User control inside a listView

[Yann]

Hi !

I'm currently working on a website with asp.NET 4.0 and c#.
I need to implemente a User control in a listview. I want the listview to show a list of data from a table name Lignes (with a ligne_id as primary key) and the user control to show a list of data from a table name Blocks (with a block_id as primary key and a ligne_id as foreign key).

Here's the code I made :

My Listview :

<asp:ListView ID="ListView1" runat="server" DataKeyNames="ligne_id" DataSourceID="SqlDataSourceLigne">

    <ItemTemplate>

            <asp:Label ID="ligne_id" ClientIDMode="Static" runat="server" Text='<%# Eval("ligne_id") %>' />

            <uc1:UC_ListeBlock ID="UC_ListeBlock1" runat="server" Ligne_ID='<%# Eval("ligne_id") %>' />
    </ItemTemplate>


</asp:ListView>

My UserControl :

<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

My user control's code Behind :

public partial class UC_ListeBlock : System.Web.UI.UserControl
{
    public Int32 Ligne_ID;

    private Int32 ligne_ID
    {
        get { return Ligne_ID; }
        set { Ligne_ID = value; }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            Label1.Text = ligne_ID.ToString();
        }
    }
}

When I execute this code, the label ligne_id from the listview has the good ligne_id from the database (so Text='<%# Eval("ligne_id") %>' is working) but the Label1 from the user control is always at 0 (so Ligne_ID='<%# Eval("ligne_id") %>' doesn't seem to work).

Do you have an idea what is wrong with my code ?

Thanks in advance for you awnser

P.S : I'm french so I'm sorry if I'm not very clear in my explanation.

[Kostadin]

Hi Yann,

I noticed that your example the property ligne_ID is private and it should be public. Check out the following code snippet in order to fix it.
User Control Mark Up:

<asp:Label ID="Label1" runat="server" Text='<%# ligne_ID %>' ></asp:Label>

User Control Code Behind:

public Int32 Ligne_ID;

    public Int32 ligne_ID
    {
        get
        {
            return Ligne_ID;
        }
        set
        {
            Ligne_ID = value;
        }
    }

Greetings,
Kostadin
the Telerik team

[Yann]

Hi,

Thanks for your reply.

I also found that in that case, Ligne_ID is initialized after the Page_Load(). So I have to move the Label1.Text = ligne_ID.ToString(); to the Page_PreRender().

Regards

Yann