Get value of TemplateFields in Gridview

I have a problem with gett开发者_如何学Going value of template field; Gridview is in ContentPlaceHolder1;

I'm trying to get value in GridView1_RowCreated event

int RowIndex = GridView1.Rows.Count - 1;
GridView1.Rows[RowIndex].Cells[0].Text = " " + AltKatLinkler;

But this code returns me null or empty.

There is my column, column index is 0. Note: I fill GridView by using SqlDataSource. There is no problem i can see row content in browser but i cant access from codebehind.

<asp:templatefield headertext="Haberler" sortexpression="KategoriID" xmlns:asp="#unknown">
    <ItemTemplate>
       < a href='<%# "KategoriGoster.aspx?KategoriID=" + Eval("KategoriID")%>'>
       <%# Eval("KategoriAd")%>
       <%# Eval("Açıklama")%>
    </ItemTemplate>
</asp:TemplateField>

see another way to do it

<asp:templatefield headertext="Haberler" sortexpression="KategoriID" xmlns:asp="#unknown">
    <ItemTemplate>
       < a href='<%# "KategoriGoster.aspx?KategoriID=" + Eval("KategoriID")%>'>
       <asp:Label ID="lbKategori" runat="server" Text='<%# Eval("KategoriAd").ToString() %>'></asp:Label>
       <asp:Label ID="lbAçıklama" runat="server" Text='<%# Eval("Açıklama").ToString() %>'></asp:Label>
    </ItemTemplate>
</asp:TemplateField>

Codebehind

   protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {

            var lbKategori = e.Row.FindControl("lbKategori") as Label;
            var lbAçıklama = e.Row.FindControl("lbAçıklama") as Label;
        }
    }