<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<%= DateTime.Now %>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click1" />
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<%= DateTime.Now %>
</ContentTemplate>
</asp:UpdatePanel>
</form>
protected void Button1_Click1(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(this.UpdatePanel1, this.GetType(), "UpdatePanel1", "alert(1)", true);
ScriptManager.RegisterStartupScript(this.UpdatePanel2, this.GetType(), "UpdatePanel2", "alert(2)", true);
}
In this code, when Button1 is clicked, only 'alert 1' will pop up, because UpdatePanel2 is conditional.
