e.Row.findcontrol() returns null after databind but all databound fields work properly

Question

I am trying to get a gridview to populate text from the database call to my Label as shown The Results have been tested and are returning the correct names

protected void Page_Load(object sender, EventArgs e)
{
    DataTable t = DBProductLink.ListWithOptions(ProductId, LinkType, null);
    TestList.DataSource = t ;
    TestList.DataBind();
}

The labels are created in the Gridview like this:

<asp:GridView ID="TestList" runat="server" OnRowDataBound="testDataBound" AutoGenerateColumns="false" DataKeyNames="Id">
    <Columns>
        <asp:TemplateField HeaderText="Sizes">
            <asp:ItemTemplate>
                <asp:Label ID="sizeLabel" runat="server" Text='<%# Eval("size") %>' />
            </asp:ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

I then tried to loop through the gridview and access the label using the ondatarowbound, however in this it is null.

protected void testDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType != DataControlRowType.DataRow)
        return;

    Label sizeLabel = e.Row.FindControl("sizeLabel") as Label;
    sizeLabel.Text = "test";
}

I am using the exact same set up with 2 drop boxes and 2 labels on another gridview with a different name on the same page which is not having this problem. Anyone got an idea on this? The other Gridview is as follows:

<asp:GridView ID="SearchList" runat="server" AutoGenerateColumns="False"
    DataKeyNames="Id"  OnRowDataBound="SearchList_RowDataBound"
    OnRowCommand="SearchList_RowCommand" Width="100%"  PageSize="20" >
    <Columns>
        <asp:BoundField DataField="Code" HeaderText="Code" SortExpression="Code" />
        <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
        <asp:TemplateField HeaderText="Price" SortExpression="Price">
            <ItemTemplate>
                <robo:MoneyLabel ID="MoneyLabel2" runat="server" 
                    Value='<%# Eval("Price") %>' />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Type">
            <ItemTemplate>
                <asp:Label ID="typeLabel" runat="server" Text='<%# Eval("Type") %>' />
                <asp:HiddenField ID="productId" runat="server" Value='<%# Eval("Id") %>' />
                <asp:HiddenField ID="isFabric" runat="server" Value='<%# Eval("IsFabric") %>' />
                <asp:HiddenField ID="isOldWizard" runat="server" Value='<%# Eval("IsOldWizard") %>' />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Options/Color/Size">
            <ItemTemplate>
                <asp:LinkButton runat="server" ID="GetOptions" Text="Get Options" CausesValidation="false" CommandName="Options"  />
                <asp:Label ID="OptionLabel" Visible="false" runat="server" Text="Option: " />
                <asp:DropDownList ID="ProductOptions" runat="server" Visible="false" />
                <asp:Label ID="ColorLabel" Visible="false" runat="server" Text="Color: "  />
                <asp:DropDownList  ID="RibbonColors" runat="server" Visible="false" AutoPostBack="true" />&nbsp;&nbsp;&nbsp;&nbsp;
                <asp:Label ID="SizeLabel" Visible="false" runat="server" Text="Size: " />
                <asp:DropDownList ID="RibbonSizes" runat="server" Visible="false" AutoPostBack="true"  />
            </ItemTemplate>
            <ItemStyle HorizontalAlign="Center" />
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Add">
            <ItemStyle Width="60px" />
            <ItemTemplate>
                <asp:LinkButton ID="LinkButton1" runat="server" Text="Add" CommandName="Add" CommandArgument='<%# Eval("Id") %>' />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

.cs is

protected void SearchList_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType != DataControlRowType.DataRow)
        return;
    int productId = (int)SearchList.DataKeys[e.Row.RowIndex].Value;
    LinkButton GetOptions = e.Row.FindControl("GetOptions") as LinkButton;
    DropDownList RibbonColors = e.Row.FindControl("RibbonColors") as DropDownList;
    DropDownList  RibbonSizes = e.Row.FindControl("RibbonSizes") as DropDownList;
    DropDownList ProductOptions = e.Row.FindControl("ProductOptions") as DropDownList;
    Label typeLabel = e.Row.FindControl("typeLabel") as Label;
    HiddenField isFabric = e.Row.FindControl("isFabric") as HiddenField;
    HiddenField isOldWizard = e.Row.FindControl("isOldWizard") as HiddenField;

    ProductType typeValue = DBConvert.ToEnum<ProductType>(typeLabel.Text);
    bool isFabricValue = Convert.ToBoolean(isFabric.Value.ToString());
    bool isOldWizardValue = Convert.ToBoolean(isOldWizard.Value.ToString());       
}

Answer 1

I just found the problem

Your markup is wrong it was tricky... I admit it

This tag: <asp:ItemTemplate> should be <ItemTemplate>

Change this:

<asp:TemplateField HeaderText="Sizes">
    <asp:ItemTemplate>
         <asp:Label ID="sizeLabel" runat="server" Text='<%# Eval("size") %>' />
    </asp:ItemTemplate>
</asp:TemplateField>

Into

<asp:TemplateField HeaderText="Sizes">
    <ItemTemplate>
         <asp:Label ID="sizeLabel" runat="server" Text='<%# Eval("size") %>' />
    </ItemTemplate>
</asp:TemplateField>

This should raise an exception... but instead, the ItemTemplate was completely ignored