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Responding to Cancel button click on server-side

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ColinBowern asked on 13 Apr 2010, 08:12 PM

When using the RadProgressArea in a custom monitoring scenario what is the prescribed way to handle the cancel operation on the server side? I am looping through a collection of items, doing stuff and I want to check something like RadProgressContext.Current.HasCancelBeenClicked. Here is what I have so far. I am getting some odd behavior on cancel along with the progress bar percentage part not updating. If you try to invoke it a second time nothing updates.

Default.aspx:

    
            <%@ Page Language="C#" AutoEventWireup="true" %> 
        
            <%@ Import Namespace="System.Collections.Generic" %> 
        
            <%@ Import Namespace="System.Threading" %> 
        
            <%@ Import Namespace="Telerik.Web.UI" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title>Long running operation with Cancel support example</title> 
        
                <style type="text/css"> 
        
                    .Hide 
        
                    { 
        
                        display: none; 
        
                    } 
        
                </style> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="ScriptManager" runat="server" EnableHistory="true" 
        
                    EnableScriptCombine="true" OutputCompression="AutoDetect"> 
        
                    <Scripts> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" /> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" /> 
        
                    </Scripts> 
        
                </telerik:RadScriptManager> 
        
                <telerik:RadAjaxLoadingPanel ID="AjaxLoadingPanel" runat="server" Skin="Default" /> 
        
                <telerik:RadAjaxManager ID="AjaxManager" runat="server" DefaultLoadingPanelID="AjaxLoadingPanel"> 
        
                    <AjaxSettings> 
        
                        <telerik:AjaxSetting AjaxControlID="DoWork"> 
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="DoWork" UpdatePanelRenderMode="Inline" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                        <telerik:AjaxSetting AjaxControlID="CancelWork"> 
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="CancelWork" UpdatePanelRenderMode="Inline" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                    </AjaxSettings> 
        
                </telerik:RadAjaxManager> 
        
                <telerik:RadWindowManager ID="WindowManager" runat="server" /> 
        
                <asp:Button ID="ShowOptionsDialog" runat="server" CausesValidation="false" OnClientClick="ShowOptionsDialog_Click(); return false;" 
        
                    Text="Go!" /> 
        
                <asp:Button ID="DoWork" runat="server" CausesValidation="false" CssClass="Hide" OnClick="DoWork_Click" /> 
        
                <asp:Button ID="CancelWork" runat="server" CausesValidation="false" CssClass="Hide" 
        
                    OnClick="CancelWork_Click" /> 
        
                <asp:HiddenField ID="DoWorkParameters" runat="server" /> 
        
                <asp:HiddenField ID="OperationId" runat="server" /> 
        
                <telerik:RadCodeBlock runat="server"> 
        
                    <script type="text/javascript"> 
        
                        window.$ = $telerik.$; 
        
                        function ShowOptionsDialog_Click() { 
        
                            var optionsDialog = $find('<%= OptionsDialog.ClientID %>'); 
        
                            optionsDialog.show(); 
        
                        } 
        
                        function OptionsDialog_Close(sender, e) { 
        
                            var result = e.get_argument(); 
        
                            if (result) { 
        
                                var progressArea = $find($('[id$=_ProgressArea]').attr('id')); 
        
                                progressArea.show(); 
        
                                var cancelButton = progressArea._findElement("CancelButton"); 
        
                                $addHandlers(cancelButton, { "click": ProgressDialog_Cancel }, this); 
        
                                var progressDialog = $find('<%= ProgressDialog.ClientID %>'); 
        
                                progressDialog.show(); 
        
                                $('<%= "#" + DoWorkParameters.ClientID %>').val(result); 
        
                                // TODO: get an operation ID with AJAX 
        
                                var operationId = "{EE1B4300-CF80-4CF1-9C01-5E6412DAEC00}"; 
        
                                $('<%= "#" + OperationId.ClientID %>').val(operationId); 
        
                                $get('<%= DoWork.ClientID %>').click(sender, e); 
        
                            } 
        
                        } 
        
                        function ProgressDialog_Cancel(sender, e) { 
        
                            $get('<%= CancelWork.ClientID %>').click(sender, e); 
        
                            return false; 
        
                        } 
        
                        function ProgressDialog_Close(title, message) { 
        
                            var progressArea = $find($('[id$=_ProgressArea]').attr('id')); 
        
                            progressArea.hide(); 
        
                            var progressDialog = $find('<%= ProgressDialog.ClientID %>'); 
        
                            progressDialog.close(); 
        
                            var resultsDialog = $find('<%= ResultsDialog.ClientID %>'); 
        
                            resultsDialog.set_title(title); 
        
                            resultsDialog.argument = message; 
        
                            resultsDialog.show(); 
        
                        } 
        
                        Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler); 
        
                        function BeginRequestHandler(sender, args) { 
        
                            var elem = args.get_postBackElement(); 
        
                            if (elem.id == '<%= CancelWork.ClientID %>') { 
        
                                args.set_cancel(false); 
        
                            } 
        
                        } 
        
                    </script> 
        
                </telerik:RadCodeBlock> 
        
                <telerik:RadWindow ID="OptionsDialog" runat="server" Behaviors="Move, Resize, Close" 
        
                    KeepInScreenBounds="true" Modal="true" NavigateUrl="~/Options.aspx" OnClientClose="OptionsDialog_Close" 
        
                    ReloadOnShow="true" ShowContentDuringLoad="false" Title="Operation Options" VisibleStatusbar="false" /> 
        
                <telerik:RadWindow ID="ProgressDialog" runat="server" Behaviors="None" KeepInScreenBounds="true" 
        
                    Height="250px" Modal="true" ShowContentDuringLoad="false" VisibleTitlebar="false" 
        
                    VisibleStatusbar="false" Width="500px"> 
        
                    <ContentTemplate> 
        
                        <telerik:RadProgressArea ID="ProgressArea" runat="server" DisplayCancelButton="true" 
        
                            ProgressIndicators="CurrentFileName,TimeElapsed,TimeEstimated,TotalProgress,TotalProgressBar,TotalProgressPercent" 
        
                            Width="100%" /> 
        
                        <telerik:RadProgressManager ID="ProgressManager" runat="server" /> 
        
                    </ContentTemplate> 
        
                </telerik:RadWindow> 
        
                <telerik:RadWindow ID="ResultsDialog" runat="server" Behaviors="Move, Resize, Close" 
        
                    KeepInScreenBounds="true" Modal="true" NavigateUrl="~/Results.aspx" ReloadOnShow="true" 
        
                    ShowContentDuringLoad="false" VisibleStatusbar="false" /> 
        
                </form> 
        
            </body> 
        
            </html> 
        
            <script runat="server"> 
        
                static Dictionary<Guid, WorkState> stateDictionary = new Dictionary<Guid, WorkState>(); 
        
                protected void DoWork_Click(object sender, EventArgs e) 
        
                { 
        
                    var stateId = new Guid(OperationId.Value); 
        
                    stateDictionary.Add(stateId, new WorkState { Argument = DoWorkParameters.Value }); 
        
                    ThreadPool.QueueUserWorkItem(DoActualWork, stateId); 
        
                    var state = stateDictionary[stateId]; 
        
                    while (!state.IsComplete) 
        
                    { 
        
                        RadProgressContext.Current.CurrentOperationText = state.Message ?? string.Empty; 
        
                        RadProgressContext.Current.PrimaryPercent = state.PercentComplete; 
        
                        Thread.Sleep(500); 
        
                    } 
        
                    var resultTitle = !state.IsAborted ? "Operation successful!" : "Operation failed."; 
        
                    var resultMessage = !state.IsAborted ? "Your request was fulfilled." : "Your request was canceled"; 
        
                    RadProgressContext.Current.OperationComplete = true; 
        
                    RadAjaxManager.GetCurrent(this).ResponseScripts.Add(string.Format("ProgressDialog_Close('{0}', '{1}');", resultTitle, resultMessage)); 
        
                    stateDictionary.Remove(stateId); 
        
                } 
        
                protected void CancelWork_Click(object sender, EventArgs e) 
        
                { 
        
                    var stateId = new Guid(OperationId.Value); 
        
                    if (stateDictionary.ContainsKey(stateId)) 
        
                    { 
        
                        stateDictionary[stateId].AbortRequested = true; 
        
                    } 
        
                } 
        
                void DoActualWork(object o) 
        
                { 
        
                    var state = stateDictionary[(Guid)o]; 
        
                    var maxItems = 20; 
        
                    for (var itemIndex = 0; itemIndex < maxItems; itemIndex++) 
        
                    { 
        
                        System.Diagnostics.Debug.Write(itemIndex); 
        
                        state.Message = string.Format("Operation {0} - {1}", state.Argument, itemIndex); 
        
                        state.PercentComplete = itemIndex / maxItems * 100; 
        
                        Thread.Sleep(1000); 
        
                        if (state.AbortRequested) 
        
                        { 
        
                            state.IsAborted = true; 
        
                            break; 
        
                        } 
        
                    } 
        
                    state.IsComplete = true; 
        
                } 
        
                class WorkState 
        
                { 
        
                    public object Argument; 
        
                    public string Message; 
        
                    public int PercentComplete; 
        
                    public bool IsComplete; 
        
                    public bool AbortRequested; 
        
                    public bool IsAborted; 
        
                } 
        
            </script>

Options.aspx:

    
            <%@ Page Language="C#" AutoEventWireup="true" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <div> 
        
                    <input id="Name" type="text" value="Calculate Pii" /> 
        
                </div> 
        
                <div> 
        
                    <button onclick="Close(document.getElementById('Name').value);"> 
        
                        Go!</button> 
        
                    <button onclick="Close(null);"> 
        
                        Cancel</button> 
        
                </div> 
        
                <script type="text/javascript"> 
        
                    function GetRadWindow() { 
        
                        var radWindow = null; 
        
                        if (window.radWindow) { 
        
                            radWindow = window.radWindow; 
        
                        } 
        
                        else if (window.frameElement.radWindow) { 
        
                            radWindow = window.frameElement.radWindow; 
        
                        } 
        
                        return radWindow; 
        
                    } 
        
                    function Close(returnValue) { 
        
                        var radWindow = GetRadWindow(); 
        
                        if (returnValue == undefined) { 
        
                            radWindow.argument = null; 
        
                            radWindow.close(); 
        
                        } 
        
                        else { 
        
                            radWindow.close(returnValue); 
        
                        } 
        
                    } 
        
                </script> 
        
                </form> 
        
            </body> 
        
            </html>

Result.aspx:

    
            <%@ Page Language="C#" AutoEventWireup="true" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="ScriptManager" runat="server" EnableHistory="true" 
        
                    EnableScriptCombine="true" OutputCompression="AutoDetect"> 
        
                    <Scripts> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" /> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" /> 
        
                    </Scripts> 
        
                </telerik:RadScriptManager> 
        
                <div id="Message"> 
        
                </div> 
        
                <input type="button" value="Close" onclick="Close(null);" /> 
        
                <script type="text/javascript"> 
        
                    window.$ = $telerik.$; 
        
                    function GetRadWindow() { 
        
                        var radWindow = null; 
        
                        if (window.radWindow) { 
        
                            radWindow = window.radWindow; 
        
                        } 
        
                        else if (window.frameElement.radWindow) { 
        
                            radWindow = window.frameElement.radWindow; 
        
                        } 
        
                        return radWindow; 
        
                    } 
        
                    function Close(returnValue) { 
        
                        var radWindow = GetRadWindow(); 
        
                        if (returnValue == undefined) { 
        
                            radWindow.argument = null; 
        
                            radWindow.close(); 
        
                        } 
        
                        else { 
        
                            radWindow.close(returnValue); 
        
                        } 
        
                    } 
        
                    $(document).ready(function () { 
        
                        var window = GetRadWindow(); 
        
                        $("#Message").text(window.argument); 
        
                    }); 
        
                </script> 
        
                </form> 
        
            </body> 
        
            </html>

2 Answers, 1 is accepted

answered on 14 Apr 2010, 05:10 PM

I have managed to get a bit further on this. The only thing I am struggling with is that the progress bar isn't updating at all.

    
            <%@ Page Language="C#" AutoEventWireup="true" Async="true" %> 
        
            <%@ Import Namespace="System.Collections.Generic" %> 
        
            <%@ Import Namespace="System.Threading" %> 
        
            <%@ Import Namespace="Telerik.Web.UI" %> 
        
            <%@ Import Namespace="System.ComponentModel" %> 
        
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
        
            <html xmlns="http://www.w3.org/1999/xhtml"> 
        
            <head runat="server"> 
        
                <title>Long running operation with Cancel support example</title> 
        
                <style type="text/css"> 
        
                    .Hide 
        
                    { 
        
                        display: none; 
        
                    } 
        
                </style> 
        
            </head> 
        
            <body> 
        
                <form id="form1" runat="server"> 
        
                <telerik:RadScriptManager ID="ScriptManager" runat="server" EnableHistory="true" 
        
                    EnableScriptCombine="true" OutputCompression="AutoDetect"> 
        
                    <Scripts> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" /> 
        
                        <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" /> 
        
                    </Scripts> 
        
                </telerik:RadScriptManager> 
        
                <telerik:RadAjaxLoadingPanel ID="AjaxLoadingPanel" runat="server" Skin="Default" /> 
        
                <telerik:RadAjaxManager ID="AjaxManager" runat="server" DefaultLoadingPanelID="AjaxLoadingPanel"> 
        
                    <AjaxSettings> 
        
                        <telerik:AjaxSetting AjaxControlID="DoWork"> 
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="DoWork" UpdatePanelRenderMode="Inline" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                        <telerik:AjaxSetting AjaxControlID="CancelWork"> 
        
                            <UpdatedControls> 
        
                                <telerik:AjaxUpdatedControl ControlID="CancelWork" UpdatePanelRenderMode="Inline" /> 
        
                            </UpdatedControls> 
        
                        </telerik:AjaxSetting> 
        
                    </AjaxSettings> 
        
                </telerik:RadAjaxManager> 
        
                <telerik:RadWindowManager ID="WindowManager" runat="server" /> 
        
                <asp:Button ID="ShowOptionsDialog" runat="server" CausesValidation="false" OnClientClick="ShowOptionsDialog_Click(); return false;" 
        
                    Text="Go!" /> 
        
                <asp:Button ID="DoWork" runat="server" CausesValidation="false" CssClass="Hide" OnClick="DoWork_Click" /> 
        
                <asp:HiddenField ID="DoWorkParameters" runat="server" /> 
        
                <asp:HiddenField ID="OperationId" runat="server" /> 
        
                <telerik:RadCodeBlock runat="server"> 
        
                    <script type="text/javascript"> 
        
                        window.$ = $telerik.$; 
        
                        function ShowOptionsDialog_Click() { 
        
                            var optionsDialog = $find('<%= OptionsDialog.ClientID %>'); 
        
                            optionsDialog.show(); 
        
                        } 
        
                        function OptionsDialog_Close(sender, e) { 
        
                            var result = e.get_argument(); 
        
                            if (result) { 
        
                                $('<%= "#" + DoWorkParameters.ClientID %>').val(result); 
        
                                var progressArea = $find($('[id$=_ProgressArea]').attr('id')); 
        
                                // Replace cancel button to prevent original POST from being aborted 
        
                                var cancelButton = progressArea._findElement("CancelButton"); 
        
                                $('#' + cancelButton.id).after('<input id="ProgressDialog_C_ProgressArea_Panel_CancelButton" class="ruButton ruCancel" type="button" value="Cancel" tabindex="-1" />').remove();  
        
                                $('#' + cancelButton.id).bind('click', ProgressDialog_Cancel); 
        
                                // Reset the progress area view in case this is the second operation 
        
                                progressArea.update({ PrimaryPercent: 0, CurrentOperationText: 'Initializing...', InProgress: true }); 
        
                                progressArea.show(); 
        
                                var progressDialog = $find('<%= ProgressDialog.ClientID %>'); 
        
                                progressDialog.show(); 
        
                                // Get a new operation ID and kick off the work operation 
        
                                $.ajax({ 
        
                                    contentType: "application/json; charset=utf-8", 
        
                                    data: "{}", 
        
                                    type: "POST", 
        
                                    url: "Default.aspx/GetOperationId", 
        
                                    success: function (msg) { 
        
                                        $('<%= "#" + OperationId.ClientID %>').val(msg.d); 
        
                                        $get('<%= DoWork.ClientID %>').click(sender, e); 
        
                                    } 
        
                                }); 
        
                            } 
        
                        } 
        
                        function ProgressDialog_Cancel(sender, e) { 
        
                            $.ajax({ 
        
                                contentType: 'application/json; charset=utf-8', 
        
                                data: '{\'operationId\':\'' + $('<%= "#" + OperationId.ClientID %>').val() + '\'}', 
        
                                type: 'POST', 
        
                                url: 'Default.aspx/CancelOperation', 
        
                            }); 
        
                        } 
        
                        function ProgressDialog_Close(title, message) { 
        
                            var progressArea = $find($('[id$=_ProgressArea]').attr('id')); 
        
                            progressArea.hide(); 
        
                            var progressDialog = $find('<%= ProgressDialog.ClientID %>'); 
        
                            progressDialog.close(); 
        
                            var resultsDialog = $find('<%= ResultsDialog.ClientID %>'); 
        
                            resultsDialog.set_title(title); 
        
                            resultsDialog.argument = message; 
        
                            resultsDialog.show(); 
        
                        } 
        
                    </script> 
        
                </telerik:RadCodeBlock> 
        
                <telerik:RadWindow ID="OptionsDialog" runat="server" Behaviors="Move, Resize, Close" 
        
                    KeepInScreenBounds="true" Modal="true" NavigateUrl="~/Options.aspx" OnClientClose="OptionsDialog_Close" 
        
                    ReloadOnShow="true" ShowContentDuringLoad="false" Title="Operation Options" VisibleStatusbar="false" /> 
        
                <telerik:RadWindow ID="ProgressDialog" runat="server" Behaviors="None" KeepInScreenBounds="true" 
        
                    Height="250px" Modal="true" ShowContentDuringLoad="false" VisibleTitlebar="false" 
        
                    VisibleStatusbar="false" Width="500px"> 
        
                    <ContentTemplate> 
        
                        <telerik:RadProgressArea ID="ProgressArea" runat="server" DisplayCancelButton="true" 
        
                            ProgressIndicators="CurrentFileName,TimeElapsed,TotalProgressBar,TotalProgressPercent" 
        
                            Width="100%" /> 
        
                        <telerik:RadProgressManager ID="ProgressManager" runat="server" /> 
        
                    </ContentTemplate> 
        
                </telerik:RadWindow> 
        
                <telerik:RadWindow ID="ResultsDialog" runat="server" Behaviors="Move, Resize, Close" 
        
                    KeepInScreenBounds="true" Modal="true" NavigateUrl="~/Results.aspx" ReloadOnShow="true" 
        
                    ShowContentDuringLoad="false" VisibleStatusbar="false" /> 
        
                </form> 
        
            </body> 
        
            </html> 
        
            <script runat="server"> 
        
                static Dictionary<Guid, WorkState> stateDictionary = new Dictionary<Guid, WorkState>(); 
        
                [System.Web.Services.WebMethod] 
        
                public static string GetOperationId() 
        
                { 
        
                    var stateId = Guid.NewGuid(); 
        
                    stateDictionary.Add(stateId, new WorkState()); 
        
                    return stateId.ToString("B"); 
        
                } 
        
                protected void DoWork_Click(object sender, EventArgs e) 
        
                { 
        
                    RadProgressContext.Current.OperationComplete = false; 
        
                    var stateId = new Guid(OperationId.Value); 
        
                    var state = stateDictionary[stateId]; 
        
                    state.Argument = DoWorkParameters.Value; 
        
                    ThreadPool.QueueUserWorkItem(DoActualWork, stateId); 
        
                    while (!state.IsComplete) 
        
                    { 
        
                        RadProgressContext.Current.CurrentOperationText = state.Message ?? string.Empty; 
        
                        RadProgressContext.Current.PrimaryPercent = state.PercentComplete; 
        
                        Thread.Sleep(500); 
        
                    } 
        
                    var resultTitle = !state.IsAborted ? "Operation successful!" : "Operation failed."; 
        
                    var resultMessage = !state.IsAborted ? "Your request was fulfilled." : "Your request was canceled"; 
        
                    RadProgressContext.Current.OperationComplete = true; 
        
                    RadAjaxManager.GetCurrent(this).ResponseScripts.Add(string.Format("ProgressDialog_Close('{0}', '{1}');", resultTitle, resultMessage)); 
        
                    stateDictionary.Remove(stateId); 
        
                } 
        
                protected void DoActualWork(object o) 
        
                { 
        
                    var state = stateDictionary[(Guid)o]; 
        
                    try 
        
                    { 
        
                        var maxItems = 15; 
        
                        for (var itemIndex = 0; itemIndex < maxItems; itemIndex++) 
        
                        { 
        
                            System.Diagnostics.Debug.Write(itemIndex); 
        
                            state.Message = string.Format("{0} - {1}", state.Argument, itemIndex); 
        
                            state.PercentComplete = itemIndex / maxItems * 100; 
        
                            Thread.Sleep(1000); 
        
                            if (state.AbortRequested) 
        
                            { 
        
                                state.IsAborted = true; 
        
                                break; 
        
                            } 
        
                        } 
        
                    } 
        
                    catch (Exception exception) 
        
                    { 
        
                        state.Error = exception; 
        
                        state.IsAborted = true; 
        
                    } 
        
                    finally 
        
                    { 
        
                        state.IsComplete = true; 
        
                    } 
        
                } 
        
                [System.Web.Services.WebMethod] 
        
                public static void CancelOperation(string operationId) 
        
                { 
        
                    var stateId = new Guid(operationId); 
        
                    if (stateDictionary.ContainsKey(stateId)) 
        
                    { 
        
                        stateDictionary[stateId].AbortRequested = true; 
        
                    } 
        
                } 
        
                class WorkState 
        
                { 
        
                    public object Argument; 
        
                    public string Message; 
        
                    public int PercentComplete; 
        
                    public bool IsComplete; 
        
                    public bool AbortRequested; 
        
                    public bool IsAborted; 
        
                    public Exception Error; 
        
                } 
        
            </script>

answered on 15 Apr 2010, 03:41 PM

Hello ColinBowern,

The code that you have posted throws JavaScript errors. They come from the following function, the last line:

function ProgressDialog_Cancel(sender, e) {

$.ajax({

contentType: 'application/json; charset=utf-8',

data: '{\'operationId\':\'' + $('<%= "#" + OperationId.ClientID %>').val() + '\'}',

type: 'POST',

url: 'Default.aspx/CancelOperation',

});

There is one extra comma on the last line, you need to remove it in order to function properly. So, the last line should look like this:

url: 'Default.aspx/CancelOperation'

});

without the comma.

Is the area still failing to appear?

Greetings,
Genady Sergeev
the Telerik team

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