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<!-- Inspired by bug #42246 -->
<%@ Page Language="C#" %>
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Data" %>
<script runat="server">
void Page_Load (object s, EventArgs e)
{
if (IsPostBack) {
txt.Text = ddl.SelectedItem.Value;
return;
}
DataTable t = new DataTable ("t");
t.Columns.Add (new DataColumn ("Symbol", typeof (string)));
t.Columns.Add (new DataColumn ("Company", typeof (string)));
t.Columns.Add (new DataColumn ("Price", typeof (double)));
DataSet ds = new DataSet ("ds");
ds.Tables.Add (t);
AddStock (t, "MSFT", "Microsoft Corp.", 25.81);
AddStock (t, "NOVL", "Novell Inc.", 6.17);
AddStock (t, "GOOG", "Google", 300.95);
ddl.DataSource = ds;
ddl.DataTextField = "Company";
ddl.DataBind ();
}
void AddStock (DataTable dt, string symbol, string co, double price)
{
DataRow dr = dt.NewRow ();
dr [0] = symbol;
dr [1] = co;
dr [2] = price;
dt.Rows.Add (dr);
}
</script>
<html>
<body>
<form runat="server">
<asp:dropdownlist appenddatabounditems="true" id="ddl" runat="server">
<asp:ListItem Text="(Select a Ticker)" Value="" />
</asp:dropdownlist>
<asp:button id="lookup" Text="Lookup Ticker" runat="server" />
<asp:requiredfieldvalidator ControlToValidate="ddl" ErrorMessage="Please select a ticker" runat="server" />
<asp:label id="txt" runat="server" />
</form>
</body>
</html>
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