CODEWITHSUNDEEP
c#asp.netdata-bindingrepeater
Tys
Tys

Reputation: 3610

asp.net repeater data after postback

In my .ascx control:

<asp:Repeater ID="rptProducts" runat="server">
    <ItemTemplate>
        <asp:Label ID="lblProductName" runat="server">
            <%# Eval("Name") %>
        </asp:Label>
    </ItemTemplate>
</asp:Repeater>

<asp:Button ID="btnGo" runat="server" Text="Postback" onclick="btnGo_Click" />

And in the codebehind:

protected void Page_Load(object sender, EventArgs e)
{
    if(!this.IsPostBack){
        var products = (from p in context.Products
                        select p).Take(30);

        rptProducts.DataSource = products;
        rptProducts.DataBind();
    }
}

And i'm wondering why my repeater looses it's data after i click that button.(postback)

Upvotes: 4

Views: 7257

Answers (1)

Tim Schmelter
Tim Schmelter

Reputation: 460058

Bind the Repeater in OnInit instead.

http://codinglifestyle.wordpress.com/2009/10/08/repeaters-and-lost-data-after-postback-viewstate/

Edit: I assume that you're handling the UserControl's Load event which gets raised after the Page's Load event. Dynamic controls must be created in Page_Load at the latest.

http://forums.asp.net/t/1191194.aspx

So either bind your Repeater in Page_Init or -what i would recommend:

Provide a public function like BindData that can be called from your page's load-event. This is also the recommended way since the page is the controller of the UserControl.

public void BindData()
{
    var products = (from p in context.Products
                    select p).Take(30);

    rptProducts.DataSource = products;
    rptProducts.DataBind();
}

Upvotes: 4

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