protected void Page_Load(object sender, EventArgs e)
    {
        // Register script for pendingCallbacks repair
        ScriptHelper.FixPendingCallbacks(Page);

        // Handle Import settings
        if (!RequestHelper.IsCallback() && !RequestHelper.IsPostBack())
        {
            // Initialize import settings
            ImportSettings = GetNewSettings();
        }

        if (!RequestHelper.IsCallback())
        {
            if (!VirtualPathHelper.UsingVirtualPathProvider)
            {
                SetWarningLabel(GetString("ImportSite.VirtualPathProviderNotRunning"));
            }

            ctrlAsyncUnzip.OnFinished += CtrlAsyncUnzipOnFinished;
            ctrlAsyncUnzip.OnError    += CtrlAsyncUnzipOnError;

            ctlAsyncImport.OnCancel += ctlAsyncImport_OnCancel;

            bool notTempPermissions = false;

            if (wzdImport.ActiveStepIndex < 3)
            {
                stpConfigImport.Settings = ImportSettings;
                stpSiteDetails.Settings  = ImportSettings;
                stpImport.Settings       = ImportSettings;

                // Ensure directory
                try
                {
                    DirectoryHelper.EnsureDiskPath(ImportSettings.TemporaryFilesPath + "\\temp.file", ImportSettings.WebsitePath);
                }
                catch (IOExceptions.IOException ex)
                {
                    pnlWrapper.Visible = false;
                    SetAlertLabel(lblErrorBlank, ex.Message);
                    return;
                }

                // Check permissions
                notTempPermissions = !DirectoryHelper.CheckPermissions(ImportSettings.TemporaryFilesPath, true, true, false, false);
            }

            if (notTempPermissions)
            {
                pnlWrapper.Visible     = false;
                pnlPermissions.Visible = true;
                SetAlertLabel(lblErrorBlank, String.Format(GetString("ImportSite.ErrorPermissions"), ImportSettings.TemporaryFilesPath, WindowsIdentity.GetCurrent().Name));
                lnkPermissions.Target      = "_blank";
                lnkPermissions.Text        = GetString("Install.ErrorPermissions");
                lnkPermissions.NavigateUrl = DocumentationHelper.GetDocumentationTopicUrl(HELP_TOPIC_DISKPERMISSIONS_LINK);
            }
            else
            {
                if (!RequestHelper.IsPostBack())
                {
                    // Delete temporary files
                    try
                    {
                        // Delete only folder structure if there is not special folder
                        bool onlyFolderStructure = !Directory.Exists(DirectoryHelper.CombinePath(ImportSettings.TemporaryFilesPath, ImportExportHelper.FILES_FOLDER));
                        ImportProvider.DeleteTemporaryFiles(ImportSettings, onlyFolderStructure);
                    }
                    catch (Exception ex)
                    {
                        pnlWrapper.Visible = false;
                        SetAlertLabel(lblErrorBlank, GetString("ImportSite.ErrorDeletionTemporaryFiles") + " " + ex.Message);
                        return;
                    }
                }

                // Javascript functions
                string script = String.Format(
                    @"
function Finished(sender) {{
    var errorElement = document.getElementById('{2}');

    var errorText = sender.getErrors();
    if (errorText != '') {{ 
        errorElement.innerHTML = errorText;
        document.getElementById('{4}').style.removeProperty('display');
    }}

    var warningElement = document.getElementById('{3}');
    
    var warningText = sender.getWarnings();
    if (warningText != '') {{ 
        warningElement.innerHTML = warningText;
        document.getElementById('{5}').style.removeProperty('display');
    }}    

    var actDiv = document.getElementById('actDiv');
    if (actDiv != null) {{ 
        actDiv.style.display = 'none'; 
    }}

    BTN_Disable('{0}');
    BTN_Enable('{1}');

    if ((errorText == null) || (errorText == '')) {{ 
        BTN_Enable('{6}');
    }}
}}
",
                    CancelButton.ClientID,
                    FinishButton.ClientID,
                    lblError.LabelClientID,
                    lblWarning.LabelClientID,
                    pnlError.ClientID,
                    pnlWarning.ClientID,
                    NextButton.ClientID
                    );

                // Register the script to perform get flags for showing buttons retrieval callback
                ScriptHelper.RegisterClientScriptBlock(this, GetType(), "Finished", ScriptHelper.GetScript(script));

                // Add cancel button attribute
                CancelButton.Attributes.Add("onclick", ctlAsyncImport.GetCancelScript(true) + "return false;");

                wzdImport.NextButtonClick     += wzdImport_NextButtonClick;
                wzdImport.PreviousButtonClick += wzdImport_PreviousButtonClick;
                wzdImport.FinishButtonClick   += wzdImport_FinishButtonClick;

                if (!RequestHelper.IsPostBack())
                {
                    stpConfigImport.InitControl();
                }
            }
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        // Register script for pendingCallbacks repair
        ScriptHelper.FixPendingCallbacks(Page);

        // Handle Import settings
        if (!RequestHelper.IsCallback() && !RequestHelper.IsPostBack())
        {
            // Initialize import settings
            ImportSettings = GetNewSettings();
        }

        if (!RequestHelper.IsCallback())
        {
            if (!VirtualPathHelper.UsingVirtualPathProvider)
            {
                SetWarningLabel(GetString("ImportSite.VirtualPathProviderNotRunning"));
            }

            ctrlAsync.OnFinished += ctrlAsync_OnFinished;
            ctrlAsync.OnError    += ctrlAsync_OnError;

            bool notTempPermissions = false;

            if (wzdImport.ActiveStepIndex < 3)
            {
                stpConfigImport.Settings = ImportSettings;
                stpSiteDetails.Settings  = ImportSettings;
                stpImport.Settings       = ImportSettings;

                // Ensure directory
                try
                {
                    DirectoryHelper.EnsureDiskPath(ImportSettings.TemporaryFilesPath + "\\temp.file", ImportSettings.WebsitePath);
                }
                catch (IOExceptions.IOException ex)
                {
                    pnlWrapper.Visible = false;
                    SetErrorLabel(ex.Message);
                    return;
                }

                // Check permissions
                notTempPermissions = !DirectoryHelper.CheckPermissions(ImportSettings.TemporaryFilesPath, true, true, false, false);
            }

            if (notTempPermissions)
            {
                pnlWrapper.Visible = false;
                SetErrorLabel(LocalizationHelper.GetStringFormat("ImportSite.ErrorPermissions", ImportSettings.TemporaryFilesPath, WindowsIdentity.GetCurrent().Name));
                pnlPermissions.Visible     = true;
                lnkPermissions.Target      = "_blank";
                lnkPermissions.Text        = GetString("Install.ErrorPermissions");
                lnkPermissions.NavigateUrl = UIContextHelper.GetDocumentationTopicUrl(HELP_TOPIC_DISKPERMISSIONS_LINK);
            }
            else
            {
                if (!RequestHelper.IsPostBack())
                {
                    // Delete temporary files
                    try
                    {
                        // Delete only folder structure if there is not special folder
                        bool onlyFolderStructure = !Directory.Exists(DirectoryHelper.CombinePath(ImportSettings.TemporaryFilesPath, ImportExportHelper.FILES_FOLDER));
                        ImportProvider.DeleteTemporaryFiles(ImportSettings, onlyFolderStructure);
                    }
                    catch (Exception ex)
                    {
                        pnlWrapper.Visible = false;
                        SetErrorLabel(GetString("ImportSite.ErrorDeletionTemporaryFiles") + ex.Message);
                        return;
                    }
                }

                // Javascript functions
                string script =
                    "var imMessageText = '';\n" +
                    "var imErrorText = '';\n" +
                    "var imWarningText = '';\n" +
                    "var imMachineName = '" + SystemContext.MachineName.ToLowerCSafe() + "';\n" +
                    "var getBusy = false;\n" +
                    "function GetImportState(cancel)\n" +
                    "{ if(window.Activity){window.Activity();} if (getBusy && !cancel) return; getBusy = true; setTimeout(\"getBusy = false;\", 2000); var argument = cancel + ';' + imMessageText.length + ';' + imErrorText.length + ';' + imWarningText.length + ';' + imMachineName; return " + Page.ClientScript.GetCallbackEventReference(this, "argument", "SetImportStateMssg", "argument", true) + " }\n";

                script +=
                    "function SetImportStateMssg(rValue, context)\n" +
                    "{\n" +
                    "   getBusy = false;\n" +
                    "   if(rValue != '')\n" +
                    "   {\n" +
                    "       var args = context.split(';');\n" +
                    "       var values = rValue.split('" + SiteExportSettings.SEPARATOR + "');\n" +
                    "       var messageElement = document.getElementById('" + lblProgress.ClientID + "');\n" +
                    "       var errorElement = document.getElementById('" + lblError.ClientID + "');\n" +
                    "       var warningElement = document.getElementById('" + lblWarning.ClientID + "');\n" +
                    "       var messageText = imMessageText;\n" +
                    "       messageText = values[1] + messageText.substring(messageText.length - args[1]);\n" +
                    "       if(messageText.length > imMessageText.length){ imMessageText = messageElement.innerHTML = messageText; }\n" +
                    "       var errorText = imErrorText;\n" +
                    "       errorText = values[2] + errorText.substring(errorText.length - args[2]);\n" +
                    "       if(errorText.length > imErrorText.length){ imErrorText = errorElement.innerHTML = errorText; document.getElementById('" + pnlError.ClientID + "').style.removeProperty('display'); }\n" +
                    "       var warningText = imWarningText;\n" +
                    "       warningText = values[3] + warningText.substring(warningText.length - args[3]);\n" +
                    "       if(warningText.length > imWarningText.length){ imWarningText = warningElement.innerHTML = warningText; document.getElementById('" + pnlWarning.ClientID + "').style.removeProperty('display'); }\n" +
                    "       if((values=='') || (values[0]=='F'))\n" +
                    "       {\n" +
                    "           StopImportStateTimer();\n" +
                    "           var actDiv = document.getElementById('actDiv'); \n" +
                    "           if (actDiv != null) { actDiv.style.display = 'none'; } \n" +
                    "           BTN_Disable('" + CancelButton.ClientID + "');\n" +
                    "           BTN_Enable('" + FinishButton.ClientID + "');\n" +
                    "       }\n" +
                    "   }\n" +
                    "}\n";

                // Register the script to perform get flags for showing buttons retrieval callback
                ScriptHelper.RegisterClientScriptBlock(this, GetType(), "GetSetImportState", ScriptHelper.GetScript(script));

                // Add cancel button attribute
                CancelButton.Attributes.Add("onclick", "BTN_Disable('" + CancelButton.ClientID + "');" + "return CancelImport();");

                wzdImport.NextButtonClick     += wzdImport_NextButtonClick;
                wzdImport.PreviousButtonClick += wzdImport_PreviousButtonClick;
                wzdImport.FinishButtonClick   += wzdImport_FinishButtonClick;

                if (!RequestHelper.IsPostBack())
                {
                    stpConfigImport.InitControl();
                }
            }
        }
    }