Question

I think this is a “doh” moment caused by me not having dome WebForms dev for a few years..

I have a repeater which which contains a bunch of checkboxes:

<asp:Repeater EnableViewState="true" ID="IDTypesRepeater" runat="server" OnItemDataBound="IdTypesRepeaterItemDataBound">
                        <HeaderTemplate/>
                        <ItemTemplate>
                            <asp:CheckBox EnableViewState="true" ID="chkIdType" Text="<%# ((KeyValuePair<string,int>)Container.DataItem).Key %>" runat="server" />
                            <asp:HiddenField ID="idType" Value="<%# ((KeyValuePair<string,int>)Container.DataItem).Value %>" runat="server"/>
                            <br />
                        </ItemTemplate>
                        </asp:Repeater>

I need to get the checkboxes that are selected in the code behind:

 foreach (RepeaterItem repeaterItem in IDTypesRepeater.Items)
        {
            if ( ((CheckBox)repeaterItem.FindControl("chkIdType")).Checked )
            {
                // Do something
            }
        }

But on postback, this code isn’t working! I know about always databinding a repeater, so I’ve done this:

protected void Page_Load(object sender, EventArgs e)
{
    IDTypesRepeater.DataSource = DocTemplateHelper.GetApplicableIDTypes().Where(type => type.Value != 0);
    IDTypesRepeater.DataBind();
}

So this repopulates the repeater, but the Update code never finds any checked checkboxes.. Any ideas?

Answer 1

Bind in the Page_Init event

protected void Page_Init(object sender, EventArgs e)
{
    IDTypesRepeater.DataSource = DocTemplateHelper.GetApplicableIDTypes().Where(type => type.Value != 0);
    IDTypesRepeater.DataBind();
}