2.0 GridView

[rravenn]

I got to playing with ASP.NET 2.0. So I have the following code:

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataKeyNames="QuestionID" OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating">
<Columns>
<asp:BoundField DataField="Description" HeaderText="??????"></asp:BoundField>
<asp:CheckBoxField DataField="IsActive" HeaderText="???." />
<asp:CommandField ButtonType="Image" CancelImageUrl="img/button_cancel.png" EditImageUrl="img/edit.png"
ShowEditButton="True" UpdateImageUrl="img/button_ok.png" />
</Columns>
</asp:GridView>

In .cs file:

SqlDataSource ds;

protected void BindData()
{
ds = new SqlDataSource(WebConfigurationManager.ConnectionStrings["AnketaDBConnectionString"].ToString(), "SELECT QuestionID,Description,IsActive FROm Question");
GridView1.DataSource = ds;
GridView1.DataBind();

}

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

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
Response.Write(e.Keys.Count.ToString());
Response.Write(e.NewValues.Count.ToString());
}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindData();
}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
BindData();
}

You see that it outputs number of keys and new values on update. Problem is, both numbers is zero, I cnanot update anything. What's wrong with that?