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  • Javassist: how to create proxy of proxy?

    - by Bozho
    I'm creating proxies with javassist ProxyFactory. When creating a single proxy all works fine. However, when I pass a proxied class to the proxying mechanism, it fails with javassist.bytecode.DuplicateMemberException: duplicate method: setHandler in com.mypackage.Bean_$$_javassist_0_$$_javassist_1 I'm creating the proxies with this: public Object createProxiedInstance(Object originalInstance) throws Exception { Class<?> originalClass = instance.getClass(); ProxyFactory factory = new ProxyFactory(); factory.setSuperclass(originalClass); factory.setHandler(new MethodHandler() {..}); Class<T> proxyClass = factory.createClass(); return proxyClass.newInstance(); } So, how do I create proxies of proxies? Update: The actual problems is that each proxy implements the ProxyObject which defines setHandler(..) method. So the 2nd proxy is trying to redefine the method, instead of overriding it in the subclass.

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  • What does it take to prove this Contract.Requires?

    - by John Gietzen
    I have an application that runs through the rounds in a tournament, and I am getting a contract warning on this simplified code structure: public static void LoadState(IList<Object> stuff) { for(int i = 0; i < stuff.Count; i++) { // Contract.Assert(i < stuff.Count); // Contract.Assume(i < stuff.Count); Object thing = stuff[i]; Console.WriteLine(thing.ToString()); } } The warning is: contracts: requires unproven: index < @this.Count What am I doing wrong? How can I prove this on an IList<T>? Is this a bug in the static analyzer? How would I submit a bug report to Microsoft?

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  • jQuery Javascript array 'contains' functionality?

    - by YourMomzThaBomb
    I'm trying to use the jQuery $.inArray function to iterate through an array and if there's an element whose text contains a particular keyword, remove that element. $.inArray is only returning the array index though if the element's text is equal to the keyword. For example given the following array named 'tokens': - tokens {...} Object [0] "Starbucks^25^http://somelink" String [1] "McDonalds^34^" String [2] "BurgerKing^31^https://www.somewhere.com" String And a call to removeElement(tokens, 'McDonalds'); would return the following array: - tokens {...} Object [0] "Starbucks^25^http://somelink" String [1] "BurgerKing^31^https://www.somewhere.com" String I'm guessing this may be possible using the jQuery $.grep or $.each function, or maybe regex. However, I'm not familiar enough with jQuery to accomplish this. Any help would be appreciated!

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  • Find a HTML control using FindControl in ASP.NET

    - by Yongwei Xing
    Hi akk I add a select control to a ASPX page like below: hgc = new HtmlGenericControl(); hgc.InnerHtml = @"<select runat='server' id='my_selectlist'> \ <option value='volvo'>Volvo</option> \ <option value='saab'>Saab</option> \ <option value='mercedes'>Mercedes</option> \ <option value='audi'>Audi</option> \ </select>"; Then in a Button click event, I use the code below, try to get the value selected HtmlSelect s = (HtmlSelect)hgc.FindControl("my_selectlist"); label.Text = s.Value; I get a error:"Object reference not set to an instance of an object." Does anyone try it before? Best Regards

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  • Good example usage of get_or _create in Django views and raising a Form error

    - by Rik Wade
    I would like to use get_or_create to check whether an object already exists in my database. If it does not, then it will be created. If it does exist, then I will not create the new object, but need to raise a form error to inform the user that they need to enter different data (for example, a different username). The view contains: p, created = Person.objects.get_or_create( email = registration_form.cleaned_data['email'], defaults = { 'creationDate': datetime.datetime.now(), 'dateOfBirth': datetime.date(1970,1,1) }) So 'p' will contain the existing Person if it exists, or the new Person if not. I would like to act on the boolean value in 'created' in order to skip over saving the Person and re-display the registration_form and raise an appropriate form validation error. The alternative I'm considering is doing a check in a custom Form validation method to see whether a Person exists with the data in the provided 'email' field, and just raising a validation error.

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  • Building an XML editor in java and RichFaces

    - by Mark Lewis
    Hello I'm building an XML editor using the above technologies. In essence, I want to read in a whole XML file to a java object, and refer using this object to each element in the XML node tree (grouped into entries) to display the content locked, have separate padlocks for the user to click to 'unlock' an entry allow overwriting of the data, and to submit this entry. 'Add entry', 'Duplicate entry', 'Delete entry' are also functions I'd like to add. I already use dom4j and XPath to access areas of the XML file so some of the work in theory is already done. Given the above, I was going to use these two together with inplaceInputs to allow the user to edit the XML and JSF validators to check the data coming in. Is this the best way to approach this problem, or is there a more straightforward route than XPathing a whole record? I started looking at jaxb but I'm new at java and jsf but I've got the feeling I won't be by the end.. Thanks

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  • client ip address in ASP.NET (.asmx) webservices

    - by Zain Shaikh
    I am using ASP.Net (.asmx) web services with Silverlight. since there is no way to find client ip address in Silverlight, therefore I had to log this on service end. these are some methods I have tried: Request.ServerVariables(”REMOTE_HOST”) HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"] HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; Request.UserHostAddress() Request.UserHostName() string strHostName = System.Net.Dns.GetHostName(); string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString(); All the above methods work fine on my local system, but when I publish my service on production server. it starts giving errors. Error: Object reference not set to an instance of an object. StackTrace: at System.Web.Hosting.ISAPIWorkerRequestInProc.GetAdditionalServerVar(Int32 index) at System.Web.Hosting.ISAPIWorkerRequestInProc.GetServerVariable(String name) at System.Web.Hosting.ISAPIWorkerRequest.GetRemoteAddress() at System.Web.HttpRequest.get_UserHostAddress()

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  • Working with jTempalte and objects

    - by Dejan.S
    EDITSolved the one object question I had at first Hi I'm using jTemplate for the first time. I been reading and it's not that hard to use it BUT I just found a examaple on one object use. <script type="text/html" id="TemplateREsultTable"> <div style="background-color: #ccc">{$T.Email}</div> <div style="background-color: #ddd">{$T.Password}</div> </script> One question about jTempaltes I got is what is better to do them in htm file or script? Another thought I got, is jTemplate the way to go?

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  • Retrieve EF4 POCOs using WCF REST services starter kit

    - by muruge
    I am using WCF REST service (GET method) to retrieve my EF4 POCOs. The service seem to work just fine. When I query the uri in my browser I get the results as expected. In my client application I am trying to use WCF REST Starter Kit's HTTPExtension method - ReadAsDataContract() to convert the result back into my POCO. This works fine when the POCO's navigation property is a single object of related POCO. The problem is when the navigation property is a collection of related POCOs. The ReadAsDataContract() method throws an exception with message "Object reference not set to an instance of an object." Below are my POCOs. [DataContract(Namespace = "", Name = "Trip")] public class Trip { [DataMember(Order = 1)] public virtual int TripID { get; set; } [DataMember(Order = 2)] public virtual int RegionID { get; set; } [DataMember(Order = 3)] public virtual System.DateTime BookingDate { get; set; } [DataMember(Order = 4)] public virtual Region Region { // removed for brevity } } [DataContract(Namespace = "", Name = "Region")] public class Region { [DataMember(Order = 1)] public virtual int RegionID { get; set; } [DataMember(Order = 2)] public virtual string RegionCode { get; set; } [DataMember(Order = 3)] public virtual FixupCollection<Trip> Trips { // removed for brevity } } [CollectionDataContract(Namespace = "", Name = "{0}s", ItemName = "{0}")] [Serializable] public class FixupCollection<T> : ObservableCollection<T> { protected override void ClearItems() { new List<T>(this).ForEach(t => Remove(t)); } protected override void InsertItem(int index, T item) { if (!this.Contains(item)) { base.InsertItem(index, item); } } } And this is how I am trying retrieve a Region POCO. static void GetRegion() { string uri = "http://localhost:8080/TripService/Regions?id=1"; HttpClient client = new HttpClient(uri); using (HttpResponseMessage response = client.Get(uri)) { Region region; response.EnsureStatusIsSuccessful(); try { region = response.Content.ReadAsDataContract<Region>(); // this line throws exception because Region returns a collection of related trips Console.WriteLine(region.RegionName); } catch (Exception ex) { Console.WriteLine(ex.Message); } } } Would appreciate any pointers.

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  • Spring MVC return ajax response using Jackson

    - by anshumn
    I have a scenario where I am filling a dropdown box in JSP through AJAX response from the server. In the controller, I am retuning a Collection of Product objects and have annotated the return type with @ResponseBody. Controller - @RequestMapping(value="/getServicesForMarket", method = RequestMethod.GET) public @ResponseBody Collection<Product> getServices(@RequestParam(value="marketId", required=true) int marketId) { Collection<Product> products = marketService.getProducts(marketId); return products; } And Product is @Entity @Table(name = "PRODUCT") public class Product implements Serializable { private static final long serialVersionUID = 1L; private int id; private Market market; private Service service; private int price; @Id @GeneratedValue(strategy = GenerationType.AUTO) public int getId() { return id; } public void setId(int id) { this.id = id; } @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name = "MARKET_ID") public Market getMarket() { return market; } public void setMarket(Market market) { this.market = market; } @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name = "SERVICE_ID") public Service getService() { return service; } public void setService(Service service) { this.service = service; } @Column(name = "PRICE") public int getPrice() { return price; } public void setPrice(int price) { this.price = price; } } Service is @Entity @Table(name="SERVICE") public class Service implements Serializable { /** * */ private static final long serialVersionUID = 1L; private int id; private String name; private String description; @Id @GeneratedValue @Column(name="ID") public int getId() { return id; } public void setId(int id) { this.id = id; } @Column(name="NAME") public String getName() { return name; } public void setName(String name) { this.name = name; } @Column(name="DESCRIPTION") public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } } In the JSP, I need to get the data from the service field of Product also. So I in my JQuery callback function, I have written like product.service.description to get the data. It seems that by default Jackson is not mapping the associated service object (or any other custom object). Also I am not getting any exception. In the JSP, I do not get the data. It is working fine when I return Collection of some object which does not contain any other custom objects as its fields. Am I missing any settings for this to work? Thanks!

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  • Does OpenRasta support Mono?

    - by Earlz
    Although Mono support is not a big deal for us, I figured OpenRasta supported it cause it has some commit messages about it.. Well, I tried to build it on Mono and got Ambiguous type references(after manually creating like 10 obj directories.) So I tried just using the prebuilt assemblies I had on hand and that gave me an Object Reference Not Set To Instance of an Object (the usual error I have with mono.. ) at OpenRasta.Diagnostics.DebuggerLoggingTraceListener.WriteAll (using xsp2) Is there official support for Mono or am I missing some sorta extra step for deployment?

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  • How to make the subview in a UIScrollView to refresh when we zoom it?

    - by wolverine
    I have subclassed UIView object inside a uiscrollview which displays a pdf page. I can zoom that page. But when I do so, the inside view is zoomed and is getting blurred. I understood that the inner view shud be refreshed and i called setNeedsDisplay. But no change have happened and its the same even now. Below is the code for drawRect for the subclassed uiview. - (void)drawRect:(CGRect)rect { if(document)//the pdf document object { CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextSaveGState(ctx); CGContextTranslateCTM(ctx, 0.00, [self bounds].size.height); NSLog(@"%f",[self bounds].size.height); CGContextScaleCTM(ctx, 1.0, -1.0); CGContextConcatCTM(ctx, CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, [self bounds], 0, true)); CGContextDrawPDFPage(ctx, page); CGContextRestoreGState(ctx); } }

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  • how to change a button into a imagebutton in asp.net c#

    - by sweetsecret
    How to change the button into image button... the button in the beginning has "Pick a date" when clicked a calender pops out and the when a date is selected a label at the bottom reading the date comes in and the text on the button changes to disabled... i want to palce a imagebutton having a image icon of the calender and rest of the function will be the same.... the code as follows: using System; using System.Collections.Generic; using System.ComponentModel; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; [assembly: TagPrefix("DatePicker", "EWS")] namespace EclipseWebSolutions.DatePicker { [DefaultProperty("Text")] [ToolboxData("<{0}:DatePicker runat=server")] [DefaultEvent("SelectionChanged")] [ValidationProperty("TextValue")] public class DatePicker : WebControl, INamingContainer { #region Properties public TextBox txtDate = new TextBox(); public Calendar calDate = new Calendar(); public Button btnDate = new Button(); public Panel pnlCalendar = new Panel(); private enum ViewStateConstants { ValidationGroup, RegularExpression, ErrorMessage, RegExText, CalendarPosition, FormatString, ExpandLabel, CollapseLabel, ApplyDefaultStyle, CausesValidation, } /// <summary> /// Defines the available display modes of this calendar. /// </summary> public enum CalendarDisplay { DisplayRight, DisplayBelow } /// <summary> /// Where to display the popup calendar. /// </summary> [Category("Behaviour")] [Localizable(true)] public CalendarDisplay CalendarPosition { get { if (ViewState[ViewStateConstants.CalendarPosition.ToString()] == null) { ViewState[ViewStateConstants.CalendarPosition.ToString()] = CalendarDisplay.DisplayRight; } return (CalendarDisplay)ViewState[ViewStateConstants.CalendarPosition.ToString()]; } set { ViewState[ViewStateConstants.CalendarPosition.ToString()] = value; } } /// <summary> /// Text version of the control's value, for use by ASP.NET validators. /// </summary> public string TextValue { get { return txtDate.Text; } } /// <summary> /// Holds the current date value of this control. /// </summary> [Category("Behaviour")] [Localizable(true)] [Bindable(true, BindingDirection.TwoWay)] public DateTime DateValue { get { try { if (txtDate.Text == "") return DateTime.MinValue; DateTime val = DateTime.Parse(txtDate.Text); return val; } catch (ArgumentNullException) { return DateTime.MinValue; } catch (FormatException) { return DateTime.MinValue; } } set { if (value == DateTime.MinValue) { txtDate.Text = ""; } else { txtDate.Text = value.ToShortDateString(); } } } [Category("Behavior"), Themeable(false), DefaultValue("")] public virtual string ValidationGroup { get { if (ViewState[ViewStateConstants.ValidationGroup.ToString()] == null) { return string.Empty; } else { return (string)ViewState[ViewStateConstants.ValidationGroup.ToString()]; } } set { ViewState[ViewStateConstants.ValidationGroup.ToString()] = value; } } /// <summary> /// The label of the exand button. Shown when the calendar is hidden. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("PickDate")] [Localizable(true)] public string ExpandButtonLabel { get { String s = (String)ViewState[ViewStateConstants.ExpandLabel.ToString()]; return ((s == null) ? "PickDate" : s); } set { ViewState[ViewStateConstants.ExpandLabel.ToString()] = value; } } /// <summary> /// The label of the collapse button. Shown when the calendar is visible. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("Disabled")] [Localizable(true)] public string CollapseButtonLabel { get { String s = (String)ViewState[ViewStateConstants.CollapseLabel.ToString()]; return ((s == null) ? "Disabled" : s); } set { ViewState[ViewStateConstants.CollapseLabel.ToString()] = value; } } /// <summary> /// Whether to apply the default style. Disable this if you want to apply a custom style, or to use themes and skins /// to style the control. /// </summary> [Category("Appearance")] [DefaultValue(true)] [Localizable(true)] public bool ApplyDefaultStyle { get { if (ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] == null) { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = true; } return (bool)ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()]; } set { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = value; } } /// <summary> /// Causes Validation /// </summary> [Category("Appearance")] [DefaultValue(false)] [Localizable(false)] public bool CausesValidation { get { if (ViewState[ViewStateConstants.CausesValidation.ToString()] == null) { ViewState[ViewStateConstants.CausesValidation.ToString()] = false; } return (bool)ViewState[ViewStateConstants.CausesValidation.ToString()]; } set { ViewState[ViewStateConstants.CausesValidation.ToString()] = value; btnDate.CausesValidation = value; } } #endregion #region Events /// <summary> /// A day was selected from the calendar control. /// </summary> public event EventHandler SelectionChanged; protected virtual void OnSelectionChanged() { if (SelectionChanged != null) // only raise the event if someone is listening. { SelectionChanged(this, EventArgs.Empty); } } #endregion #region Event Handlers /// <summary> /// The +/- button was clicked. /// </summary> protected void btnDate_Click(object sender, System.EventArgs e) { if (!calDate.Visible) { // expand the calendar calDate.Visible = true; txtDate.Enabled = false; btnDate.Text = CollapseButtonLabel; if (DateValue != DateTime.MinValue) { calDate.SelectedDate = DateValue; calDate.VisibleDate = DateValue; } } else { // collapse the calendar calDate.Visible = false; txtDate.Enabled = true; btnDate.Text = ExpandButtonLabel; } } /// <summary> /// A date was selected from the calendar. /// </summary> protected void calDate_SelectionChanged(object sender, System.EventArgs e) { calDate.Visible = false; txtDate.Visible = true; btnDate.Text = ExpandButtonLabel; txtDate.Enabled = true; txtDate.Text = calDate.SelectedDate.ToShortDateString(); OnSelectionChanged(); } #endregion /// <summary> /// Builds the contents of this control. /// </summary> protected override void CreateChildControls() { btnDate.Text = ExpandButtonLabel; btnDate.CausesValidation = CausesValidation; txtDate.ID = "txtDate"; calDate.Visible = false; if (ApplyDefaultStyle) { calDate.BackColor = System.Drawing.Color.White; calDate.BorderColor = System.Drawing.Color.FromArgb(10066329); calDate.CellPadding = 2; calDate.DayNameFormat = DayNameFormat.Shortest; calDate.Font.Name = "Verdana"; calDate.Font.Size = FontUnit.Parse("8pt"); calDate.ForeColor = System.Drawing.Color.Black; calDate.Height = new Unit(150, UnitType.Pixel); calDate.Width = new Unit(180, UnitType.Pixel); calDate.DayHeaderStyle.BackColor = System.Drawing.Color.FromArgb(228, 228, 228); calDate.DayHeaderStyle.Font.Size = FontUnit.Parse("7pt"); calDate.TitleStyle.Font.Bold = true; calDate.WeekendDayStyle.BackColor = System.Drawing.Color.FromArgb(255, 255, 204); } ConnectEventHandlers(); pnlCalendar.Controls.Add(calDate); pnlCalendar.Style["position"] = "absolute"; pnlCalendar.Style["filter"] = "alpha(opacity=95)"; pnlCalendar.Style["-moz-opacity"] = ".95"; pnlCalendar.Style["opacity"] = ".95"; pnlCalendar.Style["z-index"] = "2"; pnlCalendar.Style["background-color"] = "White"; if (CalendarPosition == CalendarDisplay.DisplayBelow) { pnlCalendar.Style["margin-top"] = "27px"; } else { pnlCalendar.Style["display"] = "inline"; } Controls.Add(txtDate); Controls.Add(pnlCalendar); Controls.Add(btnDate); base.CreateChildControls(); } /// <summary> /// Render the contents of this control. /// </summary> /// <param name="output">The HtmlTextWriter to use.</param> protected override void RenderContents(HtmlTextWriter output) { switch (CalendarPosition) { case CalendarDisplay.DisplayRight: { txtDate.RenderControl(output); btnDate.RenderControl(output); pnlCalendar.RenderControl(output); break; } case CalendarDisplay.DisplayBelow: { pnlCalendar.RenderControl(output); txtDate.RenderControl(output); btnDate.RenderControl(output); break; } } } /// <summary> /// Connect event handlers to events. /// </summary> private void ConnectEventHandlers() { btnDate.Click += new System.EventHandler(btnDate_Click); calDate.SelectionChanged += new System.EventHandler(calDate_SelectionChanged); } } } using System; using System.Collections.Generic; using System.ComponentModel; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; [assembly: TagPrefix("DatePicker", "EWS")] namespace EclipseWebSolutions.DatePicker { [DefaultProperty("Text")] [ToolboxData("<{0}:DatePicker runat=server")] [DefaultEvent("SelectionChanged")] [ValidationProperty("TextValue")] public class DatePicker : WebControl, INamingContainer { #region Properties public TextBox txtDate = new TextBox(); public Calendar calDate = new Calendar(); public Button btnDate = new Button(); public Panel pnlCalendar = new Panel(); private enum ViewStateConstants { ValidationGroup, RegularExpression, ErrorMessage, RegExText, CalendarPosition, FormatString, ExpandLabel, CollapseLabel, ApplyDefaultStyle, CausesValidation, } /// <summary> /// Defines the available display modes of this calendar. /// </summary> public enum CalendarDisplay { DisplayRight, DisplayBelow } /// <summary> /// Where to display the popup calendar. /// </summary> [Category("Behaviour")] [Localizable(true)] public CalendarDisplay CalendarPosition { get { if (ViewState[ViewStateConstants.CalendarPosition.ToString()] == null) { ViewState[ViewStateConstants.CalendarPosition.ToString()] = CalendarDisplay.DisplayRight; } return (CalendarDisplay)ViewState[ViewStateConstants.CalendarPosition.ToString()]; } set { ViewState[ViewStateConstants.CalendarPosition.ToString()] = value; } } /// <summary> /// Text version of the control's value, for use by ASP.NET validators. /// </summary> public string TextValue { get { return txtDate.Text; } } /// <summary> /// Holds the current date value of this control. /// </summary> [Category("Behaviour")] [Localizable(true)] [Bindable(true, BindingDirection.TwoWay)] public DateTime DateValue { get { try { if (txtDate.Text == "") return DateTime.MinValue; DateTime val = DateTime.Parse(txtDate.Text); return val; } catch (ArgumentNullException) { return DateTime.MinValue; } catch (FormatException) { return DateTime.MinValue; } } set { if (value == DateTime.MinValue) { txtDate.Text = ""; } else { txtDate.Text = value.ToShortDateString(); } } } [Category("Behavior"), Themeable(false), DefaultValue("")] public virtual string ValidationGroup { get { if (ViewState[ViewStateConstants.ValidationGroup.ToString()] == null) { return string.Empty; } else { return (string)ViewState[ViewStateConstants.ValidationGroup.ToString()]; } } set { ViewState[ViewStateConstants.ValidationGroup.ToString()] = value; } } /// <summary> /// The label of the exand button. Shown when the calendar is hidden. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("PickDate")] [Localizable(true)] public string ExpandButtonLabel { get { String s = (String)ViewState[ViewStateConstants.ExpandLabel.ToString()]; return ((s == null) ? "PickDate" : s); } set { ViewState[ViewStateConstants.ExpandLabel.ToString()] = value; } } /// <summary> /// The label of the collapse button. Shown when the calendar is visible. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("Disabled")] [Localizable(true)] public string CollapseButtonLabel { get { String s = (String)ViewState[ViewStateConstants.CollapseLabel.ToString()]; return ((s == null) ? "Disabled" : s); } set { ViewState[ViewStateConstants.CollapseLabel.ToString()] = value; } } /// <summary> /// Whether to apply the default style. Disable this if you want to apply a custom style, or to use themes and skins /// to style the control. /// </summary> [Category("Appearance")] [DefaultValue(true)] [Localizable(true)] public bool ApplyDefaultStyle { get { if (ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] == null) { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = true; } return (bool)ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()]; } set { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = value; } } /// <summary> /// Causes Validation /// </summary> [Category("Appearance")] [DefaultValue(false)] [Localizable(false)] public bool CausesValidation { get { if (ViewState[ViewStateConstants.CausesValidation.ToString()] == null) { ViewState[ViewStateConstants.CausesValidation.ToString()] = false; } return (bool)ViewState[ViewStateConstants.CausesValidation.ToString()]; } set { ViewState[ViewStateConstants.CausesValidation.ToString()] = value; btnDate.CausesValidation = value; } } #endregion #region Events /// <summary> /// A day was selected from the calendar control. /// </summary> public event EventHandler SelectionChanged; protected virtual void OnSelectionChanged() { if (SelectionChanged != null) // only raise the event if someone is listening. { SelectionChanged(this, EventArgs.Empty); } } #endregion #region Event Handlers /// <summary> /// The +/- button was clicked. /// </summary> protected void btnDate_Click(object sender, System.EventArgs e) { if (!calDate.Visible) { // expand the calendar calDate.Visible = true; txtDate.Enabled = false; btnDate.Text = CollapseButtonLabel; if (DateValue != DateTime.MinValue) { calDate.SelectedDate = DateValue; calDate.VisibleDate = DateValue; } } else { // collapse the calendar calDate.Visible = false; txtDate.Enabled = true; btnDate.Text = ExpandButtonLabel; } } /// <summary> /// A date was selected from the calendar. /// </summary> protected void calDate_SelectionChanged(object sender, System.EventArgs e) { calDate.Visible = false; txtDate.Visible = true; btnDate.Text = ExpandButtonLabel; txtDate.Enabled = true; txtDate.Text = calDate.SelectedDate.ToShortDateString(); OnSelectionChanged(); } #endregion /// <summary> /// Builds the contents of this control. /// </summary> protected override void CreateChildControls() { btnDate.Text = ExpandButtonLabel; btnDate.CausesValidation = CausesValidation; txtDate.ID = "txtDate"; calDate.Visible = false; if (ApplyDefaultStyle) { calDate.BackColor = System.Drawing.Color.White; calDate.BorderColor = System.Drawing.Color.FromArgb(10066329); calDate.CellPadding = 2; calDate.DayNameFormat = DayNameFormat.Shortest; calDate.Font.Name = "Verdana"; calDate.Font.Size = FontUnit.Parse("8pt"); calDate.ForeColor = System.Drawing.Color.Black; calDate.Height = new Unit(150, UnitType.Pixel); calDate.Width = new Unit(180, UnitType.Pixel); calDate.DayHeaderStyle.BackColor = System.Drawing.Color.FromArgb(228, 228, 228); calDate.DayHeaderStyle.Font.Size = FontUnit.Parse("7pt"); calDate.TitleStyle.Font.Bold = true; calDate.WeekendDayStyle.BackColor = System.Drawing.Color.FromArgb(255, 255, 204); } ConnectEventHandlers(); pnlCalendar.Controls.Add(calDate); pnlCalendar.Style["position"] = "absolute"; pnlCalendar.Style["filter"] = "alpha(opacity=95)"; pnlCalendar.Style["-moz-opacity"] = ".95"; pnlCalendar.Style["opacity"] = ".95"; pnlCalendar.Style["z-index"] = "2"; pnlCalendar.Style["background-color"] = "White"; if (CalendarPosition == CalendarDisplay.DisplayBelow) { pnlCalendar.Style["margin-top"] = "27px"; } else { pnlCalendar.Style["display"] = "inline"; } Controls.Add(txtDate); Controls.Add(pnlCalendar); Controls.Add(btnDate); base.CreateChildControls(); } /// <summary> /// Render the contents of this control. /// </summary> /// <param name="output">The HtmlTextWriter to use.</param> protected override void RenderContents(HtmlTextWriter output) { switch (CalendarPosition) { case CalendarDisplay.DisplayRight: { txtDate.RenderControl(output); btnDate.RenderControl(output); pnlCalendar.RenderControl(output); break; } case CalendarDisplay.DisplayBelow: { pnlCalendar.RenderControl(output); txtDate.RenderControl(output); btnDate.RenderControl(output); break; } } } /// <summary> /// Connect event handlers to events. /// </summary> private void ConnectEventHandlers() { btnDate.Click += new System.EventHandler(btnDate_Click); calDate.SelectionChanged += new System.EventHandler(calDate_SelectionChanged); } } } <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" % <%@ Register Assembly="EclipseWebSolutions.DatePicker" Namespace="EclipseWebSolutions.DatePicker" TagPrefix="ews" % Untitled Page       using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void DatePicker1_SelectionChanged(object sender, EventArgs e) { Label1.Text = DatePicker1.DateValue.ToShortDateString(); pnlLabel.Update(); } }

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  • WPF -- Event Threading, GUI updating question

    - by LSTayon
    I'm trying to send two events to the main window so that I can show some kind of animation that will let the user know that I'm updating the data. This is an ObservableCollection object so the OnPropertyChanged is immediately picked up by the bindings on the main window. The sleep is only in there so that the user can see the animation. However, the first OnPropetyChanged is never seen. I'm assuming this is because we're in a single thread here and the timer_Tick has to finish before the GUI updates. Any suggetions? In VB6 land we would use a DoEvents or a Form.Refresh. Thanks! private void timer_Tick(object sender, EventArgs e) { Loading = "Before: " + DateTime.Now.ToString(); OnPropertyChanged("Loading"); LoadData(); Thread.Sleep(1000); //Loading = Visibility.Hidden; Loading = "After: " + DateTime.Now.ToString(); OnPropertyChanged("Loading"); }

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  • Asynchronous sockets in C#

    - by IVlad
    I'm confused about the correct way of using asynchronous socket methods in C#. I will refer to these two articles to explain things and ask my questions: MSDN article on asynchronous client sockets and devarticles.com article on socket programming. My question is about the BeginReceive() method. The MSDN article uses these two functions to handle receiving data: private static void Receive(Socket client) { try { // Create the state object. StateObject state = new StateObject(); state.workSocket = client; // Begin receiving the data from the remote device. client.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state); } catch (Exception e) { Console.WriteLine(e.ToString()); } } private static void ReceiveCallback( IAsyncResult ar ) { try { // Retrieve the state object and the client socket // from the asynchronous state object. StateObject state = (StateObject) ar.AsyncState; Socket client = state.workSocket; // Read data from the remote device. int bytesRead = client.EndReceive(ar); if (bytesRead > 0) { // There might be more data, so store the data received so far. state.sb.Append(Encoding.ASCII.GetString(state.buffer,0,bytesRead)); // Get the rest of the data. client.BeginReceive(state.buffer,0,StateObject.BufferSize,0, new AsyncCallback(ReceiveCallback), state); } else { // All the data has arrived; put it in response. if (state.sb.Length > 1) { response = state.sb.ToString(); } // Signal that all bytes have been received. receiveDone.Set(); } } catch (Exception e) { Console.WriteLine(e.ToString()); } } While the devarticles.com tutorial passes null for the last parameter of the BeginReceive method, and goes on to explain that the last parameter is useful when we're dealing with multiple sockets. Now my questions are: What is the point of passing a state to the BeginReceive method if we're only working with a single socket? Is it to avoid using a class field? It seems like there's little point in doing it, but maybe I'm missing something. How can the state parameter help when dealing with multiple sockets? If I'm calling client.BeginReceive(...), won't all the data be read from the client socket? The devarticles.com tutorial makes it sound like in this call: m_asynResult = m_socClient.BeginReceive (theSocPkt.dataBuffer,0,theSocPkt.dataBuffer.Length, SocketFlags.None,pfnCallBack,theSocPkt); Data will be read from the theSocPkt.thisSocket socket, instead of from the m_socClient socket. In their example the two are one and the same, but what happens if that is not the case? I just don't really see where that last argument is useful or at least how it helps with multiple sockets. If I have multiple sockets, I still need to call BeginReceive on each of them, right?

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  • cannot evaluate expression because a native frame is on top of the call stack and system.accessviolationexception

    - by Joseph
    I have this code using c#. public partial class MainForm : Form { private CvCapture VideoCapture; private IplImage frame; private IplImage imgMain; public MainForm() { InitializeComponent(); } private void btnVideo_Click(object sender, EventArgs e) { double vidWidth, vidHeight; try { VideoCapture = highgui.CvCreateCameraCapture(0); } catch (Exception except) { MessageBox.Show(except.Message); } if (btnVideo.Text.CompareTo("Start Video") == 0) { if (VideoCapture.ptr == IntPtr.Zero) { MessageBox.Show("badtrip ah!!!"); return; } btnVideo.Text = "Stop Video"; highgui.CvSetCaptureProperty(ref VideoCapture, highgui.CV_CAP_PROP_FRAME_WIDTH, 640); highgui.CvSetCaptureProperty(ref VideoCapture, highgui.CV_CAP_PROP_FRAME_HEIGHT, 480); highgui.CvQueryFrame(ref VideoCapture); vidWidth = highgui.cvGetCaptureProperty(VideoCapture, highgui.CV_CAP_PROP_FRAME_WIDTH); vidHeight = highgui.cvGetCaptureProperty(VideoCapture, highgui.CV_CAP_PROP_FRAME_HEIGHT); picBoxMain.Width = (int)vidWidth; picBoxMain.Height = (int)vidHeight; timerGrab.Enabled = true; timerGrab.Interval = 42; timerGrab.Start(); } else { btnVideo.Text = "Start Video"; timerGrab.Enabled = false; if (VideoCapture.ptr == IntPtr.Zero) { highgui.CvReleaseCapture(ref VideoCapture); VideoCapture.ptr = IntPtr.Zero; } } } private void timerGrab_Tick(object sender, EventArgs e) { try { frame = highgui.CvQueryFrame(ref VideoCapture); if (frame.ptr == IntPtr.Zero) { timerGrab.Stop(); MessageBox.Show("??"); return; } imgMain = cxcore.CvCreateImage(cxcore.CvGetSize(ref frame), 8, 3); picBoxMain.Image = highgui.ToBitmap(imgMain, false); cxcore.CvReleaseImage(ref imgMain); //cxcore.CvReleaseImage(ref frame); } catch (Exception excpt) { MessageBox.Show(excpt.Message); } } } The problem is after i break all and step through the debugger the program stops at a certain code. the code where it stops is here: frame = highgui.CvQueryFrame(ref VideoCapture); the error is that it says that cannot evaluate expression because a native frame is on top of the call stack. and then when i try to shift+F11 it. there is another error saying that system.accessviolationexception. the stack trace says that: at System.Runtime.InteropServices.Marshal.CopyToManaged(IntPtr source, Object destination, Int32 startIndex, Int32 length) at CxCore.IplImage.get_ImageDataDb()

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  • WPF Error when implementing Login.xaml

    - by LnDCobra
    I am getting the following exception: "Nullable object must have a value" Everything was working when I was using StartupURI="MainWindow.xaml" but I wanted to implement a login screen so I changed this to Startup="Application_Startup" and then created the following method in App.xaml.cs: private void Application_Startup(object sender, StartupEventArgs e) { UpdateAccounts(); bool result = true; ///* LoginWindow login = new LoginWindow(); result = login.ShowDialog().Value; /* */ if (!result) { return; } MainWindow window = new MainWindow(); bool main = window.ShowDialog().Value; } Does anyone have any idea what is going on? Or any suggestions on what is the best practice for implementing login interface.

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  • How to dispose NHibernate ISession in an ASP.NET MVC App

    - by Joe Young
    I have NHibernate hooked up in my asp.net mvc app. Everything works fine, if I DON'T dispose the ISession. I have read however that you should dispose, but when I do, I get random "Session is closed" exceptions. I am injecting the ISession into my other objects with Windsor. Here is my current NHModule: public class NHibernateHttpModule : IHttpModule { public void Init(HttpApplication context) { context.BeginRequest += context_BeginRequest; context.EndRequest += context_EndRequest; } static void context_EndRequest(object sender, EventArgs e) { CurrentSessionContext.Unbind(MvcApplication.SessionFactory); } static void context_BeginRequest(object sender, EventArgs e) { CurrentSessionContext.Bind(MvcApplication.SessionFactory.OpenSession()); } public void Dispose() { // do nothing } } Registering the ISession: container .Register(Component.For<ISession>() .UsingFactoryMethod(() => MvcApplication.SessionFactory.GetCurrentSession()).LifeStyle.Transient); The error happens when I tack the Dispose on the unbind in the module. Since I keep getting the session is closed error I assume this is not the correct way to do this, so what is the correct way? Thanks, Joe

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  • Using HTMLAgility Pack to Extract Links

    - by Soham
    Hi Folks, Consider this simplest piece of code: using System; using System.Collections.Generic; using System.Linq; using System.Text; using HtmlAgilityPack; namespace WebScraper { class Program { static void Main(string[] args) { HtmlDocument doc = new HtmlDocument(); doc.LoadHtml("http://www.google.com"); foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//a[@href]")) { } } } } This effectively doesnt do anything at all, and is copied/inspired from various other StackOverflow questions like this. When compiling this, there is a runtime error which says "Object reference not set to an instance of an object." highlighting the foreach line. I can't understand, why the environment has become irritable to this humble,innocent and useless piece of code. I would also like to know, does HTMLAgilityPack accept HTML classes as nodes?

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  • Lucene's nested query evaluation regarding negation

    - by ponzao
    Hi, I am adding Apache Lucene support to Querydsl (which offers type-safe queries for Java) and I am having problems understanding how Lucene evaluates queries especially regarding negation in nested queries. For instance the following two queries in my opinion are semantically the same, but only the first one returns results. +year:1990 -title:"Jurassic Park" +year:1990 +(-title:"Jurassic Park") The simplified object tree in the second example is shown below. query : Query clauses : ArrayList [0] : BooleanClause "MUST" occur : BooleanClause.Occur "year:1990" query : TermQuery [1] : BooleanClause "MUST" occur : BooleanClause.Occur query : BooleanQuery clauses : ArrayList [0] : BooleanClause "MUST_NOT" occur : BooleanClause.Occur "title:"Jurassic Park"" query : TermQuery Lucene's own QueryParser seems to evaluate "AND (NOT" into the same kind of object trees. Is this a bug in Lucene or have I misunderstood Lucene's query evaluation? I am happy to give more information if necessary.

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  • Send parameters in order in HTTPService

    - by Suraj Chandran
    I am trying to work with a simple HTTPService. The problem is that my webservice is conscious of the order of arguments it gets. I will tell the problem with an example: var service:HTTPService = new HTTPService(); var params:Object = new Object(); params.rows = 0; params.facet = "true"; service.send(params); Note that in the above code I have mentioned the parameter rows before facet, but the url I recieve is facet=true&rows=0. So I recieve the argument rows before facet and hence my webservice does not work. I figured out that the contents of array is always sent in alphabetical order, which I dont want. Is there any way I can achieve explict ordering of parameters sent? Note that I am not in power of changing the logic of webservice(its basically a RPC service supporting both desktop and web client). Thanks.

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  • How do I modify my WCF service to work with ASP.NET pages?

    - by Scott
    I created a WCF service (.NET 3.5) that grabs data from a db and returns a list of objects. It works just fine. I tested it using the WCFTestClient application and got the desired results. Now, I tried to create an ASP.NET web application and consume the service. After enabling <serviceDebug includeExceptionDetailInFaults="true"/> in the config file, the error message is "Object reference not set to an instance of an object." How do I modify the service to work with ASP.NET? Thanks!

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  • Redirect output logs of javax.xml.ws and com.sun.xml.ws

    - by chrisnfoneur
    I am working on a SOAP based web service, with Sun's Metro. I am facing an annoying bug, each time I send a malformed SOAP object to my web service, sun's api spam the System.out with logs like this: javax.xml.ws.WebServiceException: com.sun.istack.XMLStreamException2: org.xml.sax.SAXParseException: cvc-complex-type.4: Attribute 'type' must appear on element 'object'. at com.sun.xml.ws.util.pipe.AbstractSchemaValidationTube.doProcess(AbstractSchemaValidationTube.java:206) at com.sun.xml.ws.util.pipe.AbstractSchemaValidationTube.processRequest(AbstractSchemaValidationTube.java:175) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:595) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:554) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:539) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:436) at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:243) at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:444) at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:244) at com.sun.xml.ws.transport.http.server.WSHttpHandler.handleExchange(WSHttpHandler.java:106) at com.sun.xml.ws.transport.http.server.WSHttpHandler.handle(WSHttpHandler.java:91) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:65) at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:54) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:68) at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:555) at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:65) at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:527) at sun.net.httpserver.ServerImpl$DefaultExecutor.execute(ServerImpl.java:119) at sun.net.httpserver.ServerImpl$Dispatcher.handle(ServerImpl.java:349) at sun.net.httpserver.ServerImpl$Dispatcher.run(ServerImpl.java:321) at java.lang.Thread.run(Thread.java:619) Caused by: com.sun.istack.XMLStreamException2: org.xml.sax.SAXParseException: cvc-complex-type.4: Attribute 'type' must appear on element 'object'. at com.sun.xml.ws.util.xml.StAXSource$1.parse(StAXSource.java:185) at com.sun.xml.ws.util.xml.StAXSource$1.parse(StAXSource.java:170) at org.apache.xerces.jaxp.validation.ValidatorHandlerImpl.validate(Unknown Source) at org.apache.xerces.jaxp.validation.ValidatorImpl.validate(Unknown Source) at javax.xml.validation.Validator.validate(Validator.java:127) at com.sun.xml.ws.util.pipe.AbstractSchemaValidationTube.doProcess(AbstractSchemaValidationTube.java:204) ... 20 more I would like to switch off this log or redirect it to my error/warn/debug.log files used by log4j. I tried to add a rule in my log4j.xml file : <category name="javax.xml.ws"> <priority value="error" /> </category> It didn't worked. So I tried the following trick: java.util.logging.Logger.getLogger("javax.xml.ws.WebServiceException").setLevel( java.util.logging.Level.OFF); it didn't worked neither. Any ideas ? It is not a big issue but it makes my catalina.log getting bigger & bigger and it's not the appropriate place for this kind of log. Chris

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  • Scheme Formatting Help

    - by Logan
    I've been working on a project for school that takes functions from a class file and turns them into object/classes. The assignment is all about object oriented programming in scheme. My problem however is that my code doesn't format right. The output it gives me whenever I give it a file to pass in wraps the methods of the class in a list, making it so that the class never really gets declared. I can't for the life of me figure out how to get the parenthesis wrapping the method list to remove. I would really appreciate any help. Below is the code and the class file. ;;;; PART1 --- A super-easy set of classes. Just models points and lines. Tests all of the ;; basics of class behavior without touching on anything particularly complex. (class pointInstance (parent:) (constructor_args:) (ivars: (myx 1) (myy 2)) (methods: (getx () myx) (gety () myy) (setx (x) (set! myx x)) (show () (begin (display "[") (display myx) (display ",") (display myy) (display "]"))) )) (require (lib "trace.ss")) ;; Continue reading until you hit the end of the file, all the while ;; building a list with the contents (define load-file (lambda (port) (let ((rec (read port))) (if (eof-object? rec) '() (cons rec (load-file port)))))) ;; Open a port based on a file name using open-input-file (define (load fname) (let ((fport (open-input-file fname))) (load-file fport))) ;(define lis (load "C:\\Users\\Logan\\Desktop\\simpletest.txt")) ;(define lis (load "C:\\Users\\Logan\\Desktop\\complextest.txt")) (define lis (load "C:\\Users\\Logan\\Desktop\\pointinstance.txt")) ;(display (cdaddr (cdddar lis))) (define makeMethodList (lambda (listToMake retList) ;(display listToMake) (cond [(null? listToMake) retList ;(display "The list passed in to parse was null") ] [else (makeMethodList (cdr listToMake) (append retList (list (getMethodLine listToMake)))) ] ) )) ;(trace makeMethodList) ;this works provided you just pass in the function line (define getMethodLine (lambda (functionList) `((eq? (car msg) ,(caar functionList)) ,(caddar functionList)))) (define load-classes (lambda paramList (cond [(null? paramList) (display "Your parameters are null, man.")] [(null? (car paramList))(display "Done creating class definitions.")] [(not (null? (car paramList))) (begin (let* ((className (cadaar paramList)) (classInstanceVars (cdaddr (cddaar paramList))) (classMethodList (cdr (cadddr (cddaar paramList)))) (desiredMethodList (makeMethodList classMethodList '())) ) ;(display "Classname: ") ;(display className) ;(newline)(newline) ;(display "Class Instance Vars: ") ;(display classInstanceVars) ;(newline)(newline) ;(display "Class Method List: ") ;(display classMethodList) ;(newline) ;(display "Desired Method List: ") ;(display desiredMethodList)) ;(newline)(newline) ;---------------------------------------------------- ;do not delete the below code!` `(define ,className (let ,classInstanceVars (lambda msg ;return the function list here (cond ,(makeMethodList classMethodList '()))) )) ;--------------------------------------------------- ))] ) )) (load-classes lis) ;(load-classes lis) ;(load-classes-helper lis) ;(load-classes "simpletest.txt") ;(load-classes "complextest.txt") ;method list ;(display (cdr (cadddr (cddaar <class>))))

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