CODEWITHSUNDEEP
c#asp.netwebforms
Mazen Elkashef
Mazen Elkashef

Reputation: 3499

Repeater Loses it's data on PostBacks

Repeater Markup:

<asp:Repeater ID="stat_Rptr" runat="server">
                <ItemTemplate>
                    <asp:CheckBox ID="IsSelected_ChkBx" runat="server" Text='<%# Eval("Item") %>' />
                    &nbsp;<asp:TextBox ID="Value_TxtBx" runat="server"></asp:TextBox>
                    <asp:HiddenField ID="ID_HdnFld" runat="server" Value='<%# Eval("ID") %>' />
                </ItemTemplate>
                <SeparatorTemplate>
                    <br></br>
                </SeparatorTemplate>
            </asp:Repeater>

Code-Behind:

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            PopulateStatRptr();
        }
     }


    private void PopulateStatRptr()
    {
        SqlConnection conn;
        SqlCommand comm;
        SqlDataReader reader;

        string _connString = "Data Source=localhost\\SqlExpress;Initial Catalog=MyDb;Integrated Security=True";

        conn = new SqlConnection(ConString);
        comm = new SqlCommand("SELECT ID, Item FROM Stats", conn);

        try
        {
            conn.Open();
            reader = comm.ExecuteReader();
            stat_Rptr.DataSource = reader;
            stat_Rptr.DataBind();
            reader.Close();
        }

        finally
        {
            conn.Close();
        }
    }

Upvotes: 2

Views: 17482

Answers (3)

SiN
SiN

Reputation: 3754

Bind on Page_Init instead of Page_Load.

Upvotes: 5

coder net
coder net

Reputation: 3475

Ok, it seems that Repeater is a dynamic control. If you are binding in the codebehind you have to realize that the textbox and checkboxes in the itemtemplate do not exist until you DataBind(). If you disable viewstate, you won't see them unless you databind on every page load. You are getting your values from viewstate in this case.

Check this link out.

Upvotes: 9

Joel Coehoorn
Joel Coehoorn

Reputation: 416131

Get rid of the if (!IsPostBack) code and call your function every time.

Upvotes: 2

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