Himalaya
دوشنبه 16 فروردین 1389, 12:49 عصر
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript">function clickHiddenButton(){ var btn = document.getElementById('btnHidden'); var ddl = document.getElementById('ddlTest'); if (ddl.length == 1) { btn.click(); }} </script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div>
<asp:UpdatePanel ID="upHidden" runat="server">
<ContentTemplate>
<asp:DropDownList ID="ddlTest" runat="server" onclick="javascript:clickHiddenButton();">
<asp:ListItem Text="[Select language]"></asp:ListItem>
</asp:DropDownList>
<div style="display: none;">
<asp:Button ID="btnHidden" runat="server" Text="Button"
onclick="btnHidden_Click" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
protected void btnHidden_Click(object sender, EventArgs e)
{
ArrayList a = new ArrayList();
a.Clear();
a.Add("c#");
a.Add("vb");
a.Add("java");
a.Add("delphi");
ddlTest.DataSource = a;
ddlTest.DataBind();
}