Question

I have a repeater for different updates identified by “Update_ID”. Each “Update_ID” has a number of images associated to it.

Therefore, I decided to nest a repeater for the images inside the repeater for updates.

The problem is that the image repeater never shows up, even if there is data to show.

Here is the code in ASP.NET:

<asp:Repeater ID="RepeaterUpdates" runat="server" onitemcommand="RepeaterUpdates_ItemCommand">
    <ItemTemplate>
        <div style="border: thin solid #808080">
            <table id="TableUpdates_Repeater" runat="server" style="width:100%; margin:auto; background-image:url(Resources/Icons/white-background.gif)">
                <tr>
                    <td style="width:25%">
                        <br />
                        <asp:Label ID="LabelUpdateID_Repeater" runat="server" Text="Update ID" Enabled="false"></asp:Label>
                        <asp:TextBox ID="TextBoxUpdateID_Repeater" runat="server" Width="50px" Text='<%# Eval("Update_ID") %>' Enabled="false"></asp:TextBox>
                    </td>
                </tr>
        </table>

        <asp:Repeater ID="RepeaterImages" runat="server">
            <ItemTemplate>
                <label>Hello</label>
                <asp:TextBox Text='<%# DataBinder.Eval(Container.DataItem,"Image_ID") %>' runat="server"></asp:TextBox>
            </ItemTemplate>
        </asp:Repeater>
        </div>
    </ItemTemplate>
</asp:Repeater>

Here is the code-behind:

protected void RepeaterUpdates_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        SqlConnection conn5 = new SqlConnection(connString);
        SqlDataReader rdr5;
        RepeaterItem item = e.Item;
        TextBox Update_ID = (TextBox)item.FindControl("TextBoxUpdateID_Repeater");

        try
        {
            conn5.Open();
            SqlCommand cmd5 = new SqlCommand("SelectImages", conn5);
            cmd5.CommandType = CommandType.StoredProcedure;
            cmd5.Parameters.Add(new SqlParameter("@update_id", Update_ID.Text));

            rdr5 = cmd5.ExecuteReader();

            if ((item.ItemType == ListItemType.Item) || (item.ItemType == ListItemType.AlternatingItem))
            {
                Repeater ImageRepeater = (Repeater)item.FindControl("RepeaterImages");
                ImageRepeater.DataSource = rdr5;
                ImageRepeater.DataBind();
            }
        }

        finally
        {
            conn5.Close();
        }
}

As previously stated, the child repeater never shows up, even if there is data to display. How can I solve this problem please? Thanks

Answer 1

Rather than onitemcommand, call OnItemDataBound

Change RepeaterCommandEventArgs to RepeaterItemEventArgs