Providing "create new" option in the dropdownlist.

<asp:DropDownList ID="DropDownList1" AppendDataBoundItems="true" runat="server" DataSourceID="SqlDataSource1" DataTextField="state" DataValueField="state">

    <asp:ListItem Text="(Select a State)" Value="" />

</asp:DropDownList>

The Dropdownlist Items can be added through codebehind...But, one main point is

you cant add the items in page load.

Ex: ddl_type.Items.Insert(0,"Create New");

It can be added on Page_PreRenderComplete stage of the Page Life Cycle.

The Items Will Be Bounded in this stage of Page Life Cycle.

Reason: The Page_PreRenderComplete() here the datasource id will be appended to the required controls.

For Detailed Description Go through this link.
http://msdn.microsoft.com/en-us/library/ms178472(v=vs.100).aspx[^]

To Open new page Enable the Autopostback = true and in code behind on dropdownlist selected index change.

All The Best
With Regards

Just Do the follow:

this will be on page load of the page :

 if(!ispostback)
 {

  DataSet ds = new DataSet();
  SqlDataAdapter myda = new SqlDataAdapter("select field name from table", connection object);
  myda.Fill(ds);
  drop_down1.DataSource = ds;
  drop_down1.DataValueField = "field name";
  drop_down1.DataBind();
  drop_down1.Items.Insert(0, new ListItem("Create New", "0"));
}

if any problem, please post it.


Mitesh