Add To The Top in the DataList - asp.net

Question

This My code For binding My DataList ,and every item in datalist have a different button ,
the items sorted correctly by date but the index for each item not sorted with it ,
ex:
when insert a new data in employees table the data shows correct(sorted by date),the last employee was insert into employee table shows in the first item and take the index 0.
I want to know how i can to make his index The Last Index in my old data + 1 ?
private void bind()
{
da2 = new SqlDataAdapter("select * from employees order by insert_date desc", m_SqlConnection);
DataSet dataSet2 = new DataSet();
da2.Fill(dataSet2, "det");
DataList1.DataSource = dataSet2.Tables["det"];
DataList1.DataBind();
}
protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
{
Button btn = (Button)e.Item.FindControl("button4");
Button btn2 = (Button)e.Item.FindControl("button1");
da2 = new SqlDataAdapter("select insert_stat from insert_detail where user_id='" + int.Parse(Session["id"].ToString()) + "'", m_SqlConnection);
DataSet dataSet2 = new DataSet();
da2.Fill(dataSet2, "chk");
if (dataSet2.Tables["chk"].Rows[e.Item.ItemIndex]["insert_stat"].ToString() == "accept")
{
btn.Visible = true;
btn2.Visible = true;
}
else
{
if (dataSet2.Tables["chk"].Rows[e.Item.ItemIndex]["insert_stat"].ToString() == "reject")
{
btn.Visible = false;
btn2.Visible = false;
}
}
}

Answer 1

This is more a SQL problem than a DataList issue.
I recommend that you rewrite your SQL in the bind() method to do a JOIN on the insert_detail table to get the accept or reject value out of the table and into the bound data set for the data list. This serves two benefits:
It eliminates the database call in the DataList1_ItemDataBound() method, which if you have dozens or hundreds of rows, then that is dozens or hundreds less database calls.
It allows you to put the insert_stat value into a HiddenField control in your DataList and then check the value in the DataList1_ItemDataBound event, like this:
HiddenField theHiddenField = e.Item.FindControl("HiddenField1") as HiddenField;
// Make sure we found the control, because the as operator
// returns null for a failed cast
if(theHiddenField != null)
{
if(theHiddenField.Value.ToLower() == "accept")
{
btn.Visible = true;
btn2.Visible = true;
}
else
{
btn.Visible = false;
btn2.Visible = false;
}
}