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  • Access Elements inside a DataTemplate... How to for more than 1 DataTemplate?

    - by GaaTY
    I've got 2 DataTemplates defined for a Listbox Control. 1 Template is for the UnSelected State and the other one is for the Selected State(showing more detail than the UnSelected State). I followed the example here: http://blogs.msdn.com/b/wpfsdk/archive/2007/04/16/how-do-i-programmatically-interact-with-template-generated-elements-part-ii.aspx about how to access the Elements inside the DataTemplates from Code behind. I get it right, but it only finds and returns an element of the UnSelected DataTemplate. But when i search for an element in the Selected DataTemplate i get a NullReferenceException. What could i be doing wrong?

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  • Custom jQuery dropdown

    - by Coughlin
    I am creating a custom simple dropdown using jQuery that hides/shows a element based on over state. The problem I have now is that when you go over the shown element it hides, you cant move your mouse in to the dropdown that was created. Any thoughts on how to fix that also, is there an easier way to do what I have? I am going to be reusing this and not sure the best way to set the code up for I dont need to copy/paste six times. $(function(){ $("#dog-nav").hover( function(){ $(".sub-drop-box-dog").show("fast"); }, function(){ $(".sub-drop-box-dog").hide("fast"); } ); $("#cat-nav").hover( function(){ $(".sub-drop-box-cat").show("fast"); }, function(){ $(".sub-drop-box-cat").hide("fast"); } ); });

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  • php multidimensional arrays, memory management

    - by srk
    i need a structure like this array(){ [0] = array(){ [0] = array(){ // this array will have 'n' values(n is large, like 2000) } [1] = array(){ // this array will have 'n' values(n is large, like 2000) } } . . . . [n] = ............ n arrays will each have a 2 element array, where each element has an array of n values. I used $list[$m][0][$n] and $list[$m][1][$n] inside 2 for loops where $m,$n vary from 0...2000 this crosses the allowed memory size.. i can change the size in php.ini, but i want to optimize my memory usage and not change the limit. will using objects help ? Please provide some sample code to understand. Thank you.

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  • Python: create a function to modify a list by reference not value

    - by Jonathan
    Hey all- I'm doing some performance-critical Python work and want to create a function that removes a few elements from a list if they meet certain criteria. I'd rather not create any copies of the list because it's filled with a lot of really large objects. Functionality I want to implement: def listCleanup(listOfElements): i = 0 for element in listOfElements: if(element.meetsCriteria()): del(listOfElements[i]) i += 1 return listOfElements myList = range(10000) myList = listCleanup(listOfElements) I'm not familiar with the low-level workings of Python. Is myList being passed by value or by reference? How can I make this faster? Is it possible to somehow extend the list class and implement listCleanup() within that? myList = range(10000) myList.listCleanup() Thanks- Jonathan

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  • DataTable C# Empty column type

    - by Dested
    I am trying build a DataTable one row at a time using the following code. foreach (var e in Project.ProjectElements[hi.FakeName].Root.Elements()) { index = 0; object[] obj=new object[count]; foreach (var holdingColumn in names) { string d = e.Attribute(holdingColumn.Key).Value; obj[index++] = d; } dt.Rows.Add(obj); } The problem is the DataTable has types tied to the columns. Sometimes im passing null (or an empty string) in that object index and it is telling me that it cant be converted properly to a DateTime (in this case). My question is what should I default this value to, or is there some way to have the DataTable ignore empty values.

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  • WPF Accessing Items inside Listbox which has a UserControl as ItemTemplate

    - by Turker
    I have Window that has a ListBox ListBox(MyListBox) has a DataTable for its DataContext ListBox's ItemSource is : {Binding} Listbox has a UserControl(MyUserControl) as DataTemplate UserControl has RadioButtons and TextBoxes (At first They're filled with values from DataTable and then user can change them) Window has one Submit Button What I want to do is, when user clicks the submit button For each ListBox Item, get the values form UserControl's TextBoxes and RadioButtons. I was using that method for this job : foreach(var element in MyListBox.Items) { var border = MyListBox.ItemContainerGenerator.ContainerFromItem(element)as FrameworkElement; MyUserControl currentControl = VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(myBorder,0) as Border,0)as ContentPresenter,0)as MyUserControl; //And use currentControl } I realised nothing when using 3-5 items in Listbox. But when I used much more items, I saw that "var border" gets "null" after some elements looped in foreach function. I found the reason here : http://stackoverflow.com/questions/1675926/listview-itemcontainergenerator-containerfromitemitem-return-null-after-20-item So what can I do now? I want to access all items and get their values sitting on user controls. Thanks

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  • Is there a more efficient way to set variables on a RadioButton's CheckChanged event?

    - by C Patton
    I have 16 radio buttons in an application of mine.. I have to set a variable based on which one was selected.. and I've produced some very ugly code doing this.. private void Foo_CheckedChanged(object sender, EventArgs e) { convertSource = 1; } private void Bar_CheckedChanged(object sender, EventArgs e) { convertSource = 2; } private void Baz_RadioButton_CheckedChanged(object sender, EventArgs e) { convertSource = 3; } Now, I've been thinking about it and to be honest I thought there might have been a way to do it with a switch.. I just can't conceptualize it in my mind. If anyone could show me a more efficient way of doing this, I'd really appreciate it. It's just really bugging me that such a simple thing as this is taking up fifty to seventy lines of code. thanks, cpatton

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  • Casting to generic type in Java doesn't raise ClassCastException?

    - by Kip
    I have come across a strange behavior of Java that seems like a bug. Is it? Casting an Object to a generic type (say, K) does not throw a ClassCastException even if the object is not an instance of K. Here is an example: import java.util.*; public final class Test { private static<K,V> void addToMap(Map<K,V> map, Object ... vals) { for(int i = 0; i < vals.length; i += 2) map.put((K)vals[i], (V)vals[i+1]); //Never throws ClassCastException! } public static void main(String[] args) { Map<String,Integer> m = new HashMap<String,Integer>(); addToMap(m, "hello", "world"); //No exception System.out.println(m.get("hello")); //Prints "world", which is NOT an Integer!! } }

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  • winForms Booking Class Help

    - by cameron
    Hi, I am using C# Windows Forms in visual studio with different classes performing different functions in my program. I have a "Program" main class with the following information: static class Program { /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } } and a Screen class with the following information class Screen { public List<Show> shows { get; private set; } public int ScreenNumber { get; private set; } public Screen(int screenNumber, params Show[] schedule) { this.ScreenNumber = screenNumber; this.shows = schedule.ToList<Show>(); } } and a Seat class with the following information public class Seat { private string name; public bool IsAvailable { get; set; } public decimal Price { get; private set; } public int Number { get; private set; } public Seat(bool isAvailable, int number) { this.IsAvailable = isAvailable; this.name = String.Format("Seat {0}",number); this.Price = 7.50m; this.Number = number; } public override string ToString() { return this.name; } } and finally a Show class with the following information public class Show { private List<Seat> seats = new List<Seat>(); public string Title { get; private set; } public string Time { get; private set; } public int ScreenNumber { get; private set; } public List<Seat> Seats { get { return this.seats; } } public Show(string title, DateTime time, int screenNumber, int numberOfSeats) { this.Title = title; this.Time = time.ToShortTimeString(); this.ScreenNumber = screenNumber; this.initSeats(numberOfSeats); } private void initSeats(int numberOfSeats) { for (int i = 0; i < numberOfSeats; i++) this.seats.Add(new Seat(true, i + 1)); } }` these all feed into two different winForms to create a booking system for shows. therefore i need to collate the data given in program and output it into a txt file. any help will be much appreciated NOTE: the code for FORM1 which allows the user to select which show they want is: namespace CindysSeats { public partial class Form1 : Form { private Cinema cinema = new Cinema(); //booked show could be added to booking object when you create it so that it is easily writable to the external file private Show selectedShow; public Form1() { InitializeComponent(); this.showList_dg.DataSource = this.cinema.GetShowList(); } private void showList_dg_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) { Show selectedShow = this.selectedShow = this.cinema.GetShowList()[e.RowIndex]; this.showTitle_lbl.Text = selectedShow.Title; this.showTime_lbl.Text = selectedShow.Time; this.showScreen_lbl.Text = selectedShow.ScreenNumber.ToString(); } private void confirmShow_btn_Click(object sender, EventArgs e) { if (this.selectedShow == null) return; Form2 seats = new Form2(this.selectedShow); seats.Show(); } And the code for FORM2 which is where the user selects their seats they want is: namespace CindysSeats { public partial class Form2 : Form { //booked seats could be added to booking object when you create it so that it is easily writable to the external file private List<Seat> bookedSeats = new List<Seat>(); private Show selectedShow; public Form2(Show selectedShow) { InitializeComponent(); this.selectedShow = selectedShow; this.showSeats_dg.DataSource = this.selectedShow.Seats; } private void showSeats_dg_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) { Seat selectedSeat = this.selectedShow.Seats[e.RowIndex]; if(this.bookedSeats.Contains(selectedSeat)) return; if(!selectedSeat.IsAvailable) return; this.bookedSeats.Add(selectedSeat); this.bookedSeats_lv.Items.Add(selectedSeat.ToString() + " " + selectedSeat.Price.ToString()+"\n"); this.bookedSeats_lv.Invalidate(); } private void bookSeats_btn_Click(object sender, EventArgs e) { } } thank you for helping

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  • Classic ASP result set - ultimate confusion!

    - by Paul
    Consider a simple result set from a mysql query. rs("description") and rs("description").Value should be considered as the same thing. However, depending on how you access them, you get different results (!!) Access rs("description") directly and you are returned a "Field" object. Or, more importantly, use it directly in a call, and you are returned a "Field" object. mydescription = rs("description") + " is the description" Assign it to another variable, and the Value of that object is assigned... mydescription = rs("description") the contents of "mydescription" is a string. Why this difference? At one point in the life of ASP they must have both worked exactly the same, so why have they changed, and how can I change it back?

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  • How to get login password in servlets

    - by Dusk
    I've successfully implemented form based authentication, and now I want to get the username and password to initialize session object in javamail from servlets. How can I do that? I can getlogin username by using method request.getRemoteUser(), but I don't know how to get the password. If I create any session object like: authentication = new PasswordAuthentication(user,password); Properties props = new Properties(); props.put("mail.host", "localhost"); props.put("mail.debug",true); props.put("mail.store.protocol", "pop3"); props.put("mail.transport.protocol", "smtp"); Session session = Session.getInstance(props, this); then how can I get inbox messages from mail server based upon particular username and password, if I don't pass any password from servlets to PasswordAuthentication object?

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  • Auto populate input based on file name with AngularJS

    - by LouieV
    I am playing around with AngularJS and have not been able to solve this problem. I have a view that has a form to upload a file to a node server. So far I have manage to do this using some directives and a service. I allow the user to send a custom name to the POST data if they desire. What I wan to accomplish is that when the user selects a file the filename models auto populates. My view looks like: <div> <input file-model="phpFile" type="file"> <input name="filename" type="text" ng-model="filename"> <button ng-click="send()">send</button> </div> file-model is my directive that allows the file to be assigned to a scope. myApp.directive('fileModel', ['$parse', function($parse) { return { restrict: 'A', link: function(scope, element, attrs) { var model = $parse.(attrs.fileModel); var modelSetter = model.assign; element.bind('change', function() { scope.$apply(function() { modelSetter(scope, element[0].files[0]); }); }); } }]); The service: myApp.service('fileUpload', ['$http', function($http){ this.uploadFileToUrl = function(file, uploadUrl, optionals) { var fd = new FormData(); fd.append('file', file); for (var key in file) { fd.append(key, file[key]); } for(var i = 0; i < optionals.length; i++){ fd.append(optionals[i].name, optionals[i].data); } }); }]); Here as you can see I pass the file, append its properties, and append any optional properties. In the controller is where I am having the troubles. I have tried $watch and using the file-model but I get the same error either way. myApp.controller('AddCtrl', function($scope, $location, PEberry, fileUpload){ //$scope.$watch(function() { // return $scope.phpFile; //},function(newValue, oldValue) { // $scope.filename = $scope.phpFile.name; //}, true); // if ($scope.phpFiles) { // $scope.filename = $scope.phpFiles.name; // } $scope.send = function() { var uploadUrl = "/files"; var file = $scope.phpFile; //var opts = [{ name: "uname", data: file.name }] fileUpload.uploadFileToUrl(file, uploadUrl); }; }); Thank you for your help!

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  • Rails 3.1. Cocoon link_to_add_association example needed

    - by BazZy
    pls show any example of using Cocoon's 'link_to_add_association' with html_options. https://github.com/nathanvda/cocoon Documentation says: html_options: extra html-options (see link_to) There are two extra options that allow to conrol the placement of the new link-data: data-association-insertion-node : the jquery selector of the node data-association-insertion-position : insert the new data before or after the given node. But i can not understand what to do, if i want insert partial just before my "add element" link. Not just after parent's div begin. This not gonna work: <%= link_to_add_association "add element", f, :production_years, :position = "after_all" %

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  • When using the getInstance() method of the abstract java.text.NumberFormat class, what is the actual

    - by iamchuckb
    This question expands upon the one at abstract-class-numberformat-very-confused-about-getinstance. I feel that this question is different enough to merit being asked on its own. In the answers to that question, it was stated that a code statement such as NumberFormat en = NumberFormat.getInstance(Locale.US); returns an object that is a subclass of the java.text.NumberFormat class. It makes sense to me why the return type can't be just an instance of NumberFormat since that is an abstract class. Rather, it was stated that the returned object is at least an instance of NumberFormat, but actually something else. My question is this: what specifically is the class of the object that is returned? In the Sun documentation the only subclasses I see are ChoicesFormat and DecimalFormat. Is there some sort of behind the scenes compiler voodoo going on here? Thanks in advance!

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  • Can Ruby on Rails handle AJAX Response by Static Javascript code? by using RJS?

    - by Jian Lin
    So it looks like on RoR, when Ajax (using form_remote_tag) returns a success code, Javascript is also returned to handle the visual effects. (this is the RJS mechanism) using Fiddler, I do see the following response: try { Element.update("vote_score", "Score 58"); $("vote_score").visualEffect("highlight"); } catch (e) { alert('RJS error:\n\n' + e.toString()); alert('Element.update(\"vote_score\", \"Score 58\");\n$(\"vote_score\").visualEffect(\"highlight\");'); throw e } Will there be situation where the code is quite big (like 1 or 2k) that RJS can use some sort of static Javascript already loaded to handle the effect? Is there any other ways to use static Javascript already loaded with the page? Must it be just raw Javascript and use the Prototype's Ajax success response to call the static Javascript code, or can it be some Rails mechanism related to RJS?

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  • Nhibernate not tracking changes

    - by Lavinski
    I'm using nhibernate and it appears that changes to my new object are not persisted. After creating and saving an object I then modify it and commit the transaction. However none of the modifications are saved. The strange thing is this code was working previously and I have no idea what could cause this. Nothing was changed that's obviously related.. As an attempted work around I saved the object later in the procedure after all the changes where made however I was greeted with an Assertion Failure collection [] was not processed by flush. Any ideas?

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  • Unable to get the DspStatus Field in the Task document properties.

    - by Pari
    Hi, I am using Interop.Domino.dll API to read the NSF file and able to read the properties of the Task Document. When i view the Task Document properties in the Lotus Notes, i am able to view the Status Field, Importance Field and few others, but when i programatically dump all the Field Names and their values i am unable to get few of them as mentioned above. So, how to get all the Field Names and their values as i iterate through all the document properties. Is this the problem of IBM Lotus Notes Application or the Domino API ? Here is my sample code to iterate the TODO document properties : object[] TaskItems = docTodoDoc.Items as object[]; foreach (NotesItem objItem in TaskItems) { m_objLogFile.Debug(objItem.Name + " - "); m_objLogFile.Debug("Values :: " + ((object[])docTodoDoc.GetItemValue(objItem.Name))[0] as String); } Please help me out to over come this issue as i need to access the status value of the TODO Item from the NSF file. Thanks.

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  • Getting Session in Http Handler ashx

    - by prakash
    Hi All, I am using Http Handler ashx file for showing the images. I was using Session object to get image and return in the response Now problem is i need to use custom Session object its nothing but the Wrapper on HttpSession State But when i am trying to get existing custom session object its creating new ... its not showing session data , i checked the session Id which is also different Please adive how can i get existing session in ashx file ? Note: When i use ASP.NET Sesssion its working fine [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] public class GetImage : IHttpHandler, System.Web.SessionState.IRequiresSessionState {

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  • "Cannot convert to IComparer"

    - by Odrade
    I have the following IComparer defined for boxed RegistryItem objects: public class BoxedRegistryItemComparer : IComparer<object> { public int Compare(object left, object right) { RegistryItem leftReg = (RegistryItem)left; RegistryItem rightReg = (RegistryItem)right; return string.Compare(leftReg.Name, rightReg.Name); } } I want to use this to sort an ArrayList of boxed RegistryItems (It really should be a List<RegistryItem, but that's out of my control). ArrayList regItems = new ArrayList(); // fill up the list ... BoxedRegistryItemComparer comparer = new BoxedRegistryItemComparer(); ArrayList.sort(comparer); However, the last line gives the compiler error: "Cannot convert from BoxedRegistryItemComparer to System.Collections.IComparer". I would appreciate it if someone could point out my mistake.

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  • vectorized approach to binning with numpy/scipy in Python

    - by user248237
    I am binning a 2d array (x by y) in Python into the bins of its x value (given in "bins"), using np.digitize: elements_to_bins = digitize(vals, bins) where "vals" is a 2d array, i.e.: vals = array([[1, v1], [2, v2], ...]). elements_to_bins just says what bin each element falls into. What I then want to do is get a list whose length is the number of bins in "bins", and each element returns the y-dimension of "vals" that falls into that bin. I do it this way right now: points_by_bins = [] for curr_bin in range(min(elements_to_bins), max(elements_to_bins) + 1): curr_indx = where(elements_to_bins == curr_bin)[0] curr_bin_vals = vals[:, curr_indx] points_by_bins.append(curr_bin_vals) is there a more elegant/simpler way to do this? All I need is a list of of lists of the y-values that fall into each bin. thanks.

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  • JavaScript: Change to Absolute Positioning

    - by Doug
    I'm trying to center a page on any resolution while still being able to use absolute positioning to move pictures. I figure that the best way would be to have a table positioned relatively in the beginning in the center of the page, then change it to absolute positioning in the onload of the page. I think the correct line is: document.getElementById("Object").style.position = "absolute"; However, I put an alert box after it asking where the left side of the object is, I get undefined. But, if I directly assign it to a position (Object.style.left = 500) I will get that number. So I can assign it a value, meaning it is in absolute position, but I cannot pull a value out of that. Kind of confusing but hopefully it makes sense and someone knows what to do. Thanks.

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  • Access event.target in IE8 unobstrusive Javascript

    - by Mirko
    The following function gets the target element in a dropdown menu: function getTarget(evt){ var targetElement = null; //if it is a standard browser if (typeof evt.target != 'undefined'){ targetElement = evt.target; } //otherwise it is IE then adapt syntax else{ targetElement = evt.srcElement; } //return id of element when hovering over or if (targetElement.nodeName.toLowerCase() == 'li'){ return targetElement; } else if (targetElement.parentNode.nodeName.toLowerCase() == 'li'){ return targetElement.parentNode; } else{ return targetElement; } Needless to say, it works in Firefox, Chrome, Safari and Opera but it does not in IE8 (and I guess in previous versions as well). When I try to debug it with IE8 I get the error "Member not Found" on the line: targetElement = evt.srcElement; along with other subsequent errors, but I think this is the key line. Any help will be appreciated.

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  • JDOM Parser and Namespace how to get clean Content

    - by senzacionale
    MY xml: <?xml version="1.0"?> <company xmlns="http://www.xx.com/xx"> <staff> <firstname>yong</firstname> <lastname>mook kim</lastname> <nickname>mkyong</nickname> <salary>100000</salary> </staff> <staff> <firstname>low</firstname> <lastname>yin fong</lastname> <nickname>fong fong</nickname> <salary>200000</salary> </staff> </company> Reader in = new StringReader(message); Document document = (Document)saxBuilder.build(in); Element rootNode = document.getRootElement(); List<?> list = rootNode.getChildren("staff", Namespace.getNamespace("xmlns="http://www.infonova.com/MediationFeed"")); XMLOutputter outp = new XMLOutputter(); outp.setFormat(Format.getCompactFormat()); for (int ii = 0; ii < list.size(); ii++) { Element node = (Element)list.get(ii); StringWriter sw = new StringWriter(); outp.output(node.getContent(), sw); StringBuffer sb = sw.getBuffer(); String xml = sb.toString(); } but my xml object looks like this <firstname xmlns="http://www.xx.com/xx">yong</firstname> <lastname xmlns="http://www.xx.com/xx">mook kim</lastname> <nickname xmlns="http://www.xx.com/xx">mkyong</nickname> <salary xmlns="http://www.xx.com/xx">100000</salary> every elemnt has namespace. why this? i don't want namespace... I want the same output as is in xml example like <firstname>yong</firstname> <lastname>mook kim</lastname> <nickname>mkyong</nickname> <salary>100000</salary>

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  • Delphi - COM/OLE starting example needed

    - by durumdara
    Hi! 10 years have ellapsed since I used COM/OLE, and I forget 90% of them. Now we need to make a COM object to access some data from PHP/Python (this is specific thing, the php ODBC don't access the output params of a DataBase - like stored proc output), and my idea the I realize a minimal object with one method, and PHP/Python can call this to get the output... procedure ExecSQL(Config, IP, Port, DBName, SQL, IDFieldName : variant) : output output is [IDValue, ErrorMsg, HResult] Please help me a very little example, how to start it? I need only this, but I'm confused by many ActiveX/COM in the palette. What I need to use to make a simple COM DLL, and how to register my COM object with this DLL? Thanks: dd

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  • In C#, can I hide/modify accessors in subclasses?

    - by Diego
    I'm not even sure what this principle is called or how to search for it, so I sincerely apologize if it has been brought up before, but the best way to do it is with an example. class Properties { public string Name { get; set; } } class MyClass { class SubProperties: Properties { public override Name { get { return GetActualName(); } set { _value = SetActualName(value); } } } public SubProperties ClassProperties; private GetActualName() { ClassProperties.Name = "name"; } private SetActualName(string s) { ClassProperties.Name = SomeOtherFunction(s); } } The idea is to have any object that instantiates MyClass have a fully accessible property ClassProperties. To that object, it would look exactly like a Properties object, but behind the scenes, MyClass is actually computing and modifying the results of the fields. This method of declaration is obviously wrong since I can't access GetActualName() and SetActualName() from within the SubProperties definition. How would I achieve something like this?

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