LinkButton OnCommand UpdatePanel

Somehow, the OnCommand method of a LinkButton never fires in the following code. I believe I'm running the latest of Ajax (1.0) and the Microsoft.Web.Preview.dll is there in my Bin directory. Any clue? I'm pretty sure I got this working when I didn't have UpdatePanel.

.ASPX code:

1<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">2 <asp:ScriptManager ID="ScriptManager1" runat="server">3 </asp:ScriptManager>4 <asp:UpdatePanel ID="up1" runat="server">5 <ContentTemplate>6 <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="false" Font-Size="X-Small"7 Width="100%" ShowHeader="false" BorderStyle="none">8 <RowStyle BackColor="#ffffff" />9 <Columns>10 <asp:ImageField DataImageUrlField="status" DataImageUrlFormatString="~/Images/{0}.png"11 NullDisplayText=" - " ItemStyle-HorizontalAlign="center" DataAlternateTextField="description" />12 <asp:TemplateField>13 <ItemTemplate>14 <asp:Literal runat="server" ID="appName" EnableViewState="false" Text='<%# Eval("app_name") + " (" + Eval("application_id") + ")"%>'></asp:Literal>15 </ItemTemplate>16 </asp:TemplateField>17 <asp:TemplateField ItemStyle-HorizontalAlign="center">18 <ItemTemplate>19 <asp:LinkButton runat="server" ID="linkPromote" Text='<%# this.GetLink(Convert.ToInt32(Eval("status")))%>'20 Visible='<%# this.ShowLink(Convert.ToInt32(Eval("status")))%>' OnClientClick="Ask();"21 CommandArgument='<%# Eval("application_id") + "|" + Eval("run_date") + "|" + Eval("status")%>'22 CommandName='<%# this.GetLink(Convert.ToInt32(Eval("status")))%>' OnCommand="ChangeStatus" />23 </ItemTemplate>24 </asp:TemplateField>25 <asp:TemplateField ItemStyle-HorizontalAlign="center">26 <ItemTemplate>27 <asp:HyperLink ID="details" runat="server" NavigateUrl='<%# "javascript:MasterList(" + this.GetRowData(Container) + ");"%>'28 ImageUrl="~/Images/more.gif" ToolTip="Details" Visible='<%# this.ShowDetails(Convert.ToInt32(Eval("status")))%>' />29 </ItemTemplate>30 </asp:TemplateField>31 </Columns>32 </asp:GridView>33 </ContentTemplate>34 </asp:UpdatePanel>35 <asp:ObjectDataSource ID="ObjectDataSource2" runat="server" SelectMethod="GetListOfRunningAppsNotCompleted"36 TypeName="AnalyticsBizOb.StatusMonitorImp"></asp:ObjectDataSource>3738 <script type="text/javascript">39 function Ask()40 {41 return confirm('Are you sure you want to change status for this App?');42 }43 </script>4445</asp:Content>

Code-behind:

1protected void Page_Load(object sender, EventArgs e)2 {3if (!IsPostBack)4 {5 PopulateRunningAppsGrid();6 }7 }8void PopulateRunningAppsGrid()9 {10 ObjectDataSource2.SelectParameters.Clear();11 ObjectDataSource2.SelectParameters.Add("runDate","20070419");12 ObjectDataSource2.DataBind();13 GridView2.DataSourceID ="ObjectDataSource2";14 GridView2.DataBind();1516 }17protected void ChangeStatus(object sender, CommandEventArgs e)18 {19if (e.CommandName =="Restart" || e.CommandName =="Promote")20 {21 StatusMonitorImp smi =new StatusMonitorImp();22string[] args = e.CommandArgument.ToString().Split('|');23int statusTo = e.CommandName =="Restart" ? 19 : 20;2425 ScriptManager.RegisterStartupScript(up1, up1.GetType(),"success","alert('Successfully changed the status of app " + args[0] +" from " + args[2] +" to " + statusTo.ToString() +" for date " + args[1] +".');",true);2627 }28 GridView2.DataBind();29 }30public string GetRowData(IDataItemContainer iic)31 {32if (iic !=null)33 {34return DataBinder.Eval(iic.DataItem,"run_date").ToString() +", "35 + DataBinder.Eval(iic.DataItem,"application_id").ToString() +", '"36 + DataBinder.Eval(iic.DataItem,"app_name").ToString() +"'";37 }38else39 return"";40 }41protected bool ShowLink(int status)42 {43if (status == 19 || status == 50 || status == 500)44return true;45else46 return false;47 }4849protected bool ShowDetails(int status)50 {51if (status > 0 && status != 999)52return true;53else54 return false;55 }56protected string GetLink(int status)57 {58string ret ="";59if (status == 500 || status == 50)60 ret ="Restart";61if (status == 19)62 ret ="Promote";63return ret;64 }

Found the reason why it was not working. In my MasterPage, I've turn off the ViewState (EnableViewState = "false"), that's why the code above (OnCommand="ChangeStatus") was not firing up.

I don't know whether it is by design but I think it's bug in ASP.Net and something is not right in the core.