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  • Model View Presenter plus ASP.NET Web Service; where does the asmx live?

    - by Dirk
    I've been slowly transitioning from a traditional web forms architecture to the MVP pattern (Passive View). So far, it's been fairly easy to implement b/c the views I've dealt with have all employed a classic PostBack model. However, I've come across my first view that will refresh portions of itself via web services. I can't grok where the web service should live (Presenter I think) or how to expose that asmx end point to my View while still maintaining the clean separation of concerns/testability that MVP affords me. I've searched far and wide for some examples on how this might be implemented and have come up with nothing. Please help!

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  • Custom components vs default components in GUI Design. Which is more practical? (.NET)

    - by AlexRednic
    Ok, so is it better to create my own components (Either inherit them from existing ones or creating them from scratch) or to use the ones that come by default? I'm asking this under the umbrella of scalability, overhead and other factors that my contribute on each of the choices. UPDATE: Sorry if I'm to vague. I don't really know how to explain myself better. Isn't it a good idea to inherit each default component? For example what if I'm to design a rather large application and for example i need to change the display format on a DateTimePicker. Wouldn't it better to think ahead and inherit it and use the inherited component instead of the defaults? But, wouldn't it add a lot of overhead in small applications?

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  • Small, editable table of strings. Which Forms control do I want? (.NET)

    - by I. J. Kennedy
    I have a small array of structs, each struct has three fields, all strings. I want to display these structs in a grid, let the user edit the strings a la Excel, and then retrieve the edited strings of course. Which WinForms control is best for this? Tried a DataGridView but setting the DataSource to the array of structs doesn't seem to work. There are myriad controls with similar names but I can't figure out what does what. All the examples I've found are geared toward using a database as the data source--I just have a simple array.

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  • EntityFramework gives IDisposable error

    - by Snoop Dogg
    I use EF for the back-end DataLayer in my asp.net websites. I create a class library and add the Model in it, reference it and use it from the ASP.NET Website. But this time, I generated the model from database but it seems does not implement IDisposable, and the methods I used to see are not there. DeleteObject , SaveChanges etc. There are only Two tables in the DB and the Model was generated with only the TableSets and two methods AddToTableSet ... Had anybody encountered such a problem?

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  • ASP.NET MVC / Linq-to-SQL classes: Can I get it to infer readable display names?

    - by Gary McGill
    If I have a table Orders with fields CustomerID, OrderID and OrderDate, then the "Linq-to-SQL classes" generated class will be called Orders, with members called CustomerID, OrderID and OrderDate. So far so good. However, if I then do Html.LabelFor(m => m.OrderDate) then the generated text will be "OrderDate" instead of "Order Date". I tried using Order_Date as the field name, but that didn't work. Is there any way to get it to infer a better display name? [I know that I can use data annotations to specify the display name explicitly, but I really don't want to do that for all my classes/members - I just want it to work by convention.]

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  • MySQL: How can fetch SUM() of all fields in one Query?

    - by takpar
    Hi, I just want somthing like this: select SUM(*) from `mytable` group by `year` any suggestion? (I am using Zend Framework; if you have a suggestion using ZF rather than pure query would be great!) Update: I have a mass of columns in table and i do not want to write their name down one by one. No Idea??

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  • .NET: efficient way to produce a string from a Dictionary<K,V> ?

    - by Cheeso
    Suppose I have a Dictionary<String,String>, and I want to produce a string representation of it. The "stone tools" way of doing it would be: private static string DictionaryToString(Dictionary<String,String> hash) { var list = new List<String> (); foreach (var kvp in hash) { list.Add(kvp.Key + ":" + kvp.Value); } var result = String.Join(", ", list.ToArray()); return result; } Is there an efficient way to do this in C# using existing extension methods? I know about the ConvertAll() and ForEach() methods on List, that can be used to eliminate foreach loops. Is there a similar method I can use on Dictionary to iterate through the items and accomplish what I want?

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  • How do I strip multiple (optional) parts of a SQL string using .NET Regular Expressions?

    - by Luc
    I've been working on this for a few hours now and can't find any help on it. Basically, I'm trying to strip a SQL string into various parts (fields, from, where, having, groupBy, orderBy). I refuse to believe that I'm the first person to ever try to do this, so I'd like to ask for some advise from the StackOverflow community. :) To understand what I need, assume the following SQL string: select * from table1 inner join table2 on table1.id = table2.id where field1 = 'sam' having table1.field3 > 0 group by table1.field4 order by table1.field5 I created a regular expression to group the parts accordingly: select\s+(?<fields>.+)\s+from\s+(?<from>.+)\s+where\s+(?<where>.+)\s+having\s+(?<having>.+)\s+group\sby\s+(?<groupby>.+)\s+order\sby\s+(?<orderby>.+) This gives me the following results: fields => * from => table1 inner join table2 on table1.id = table2.id where => field1 = 'sam' having => table1.field3 > 0 groupby => table1.field4 orderby => table1.field5 The problem that I'm faced with is that if any part of the SQL string is missing after the 'from' clause, the regular expression doesn't match. To fix that, I've tried putting each optional part in it's own (...)? group but that doesn't work. It simply put all the optional parts (where, having, groupBy, and orderBy) into the 'from' group. Any ideas?

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  • How do I get certain code to execute before every single controller action in ASP.NET MVC 2?

    - by Chris
    I want to check some things about the state of the session, the user agent, etc, and possibly take action and return a special view BEFORE a controller method gets a chance to execute. For example: Most common: User requests Home/Index System checks to make sure x != 0. x does not equal zero, so the Home/Index controller executes like normal. But, sometimes: User requests Home/Index System checks to make sure x != 0. x DOES equal zero. The user must be notified and the requested controller action cannot be allowed to execute. I think this involves the use of ActionFilters. But I have read about them and I don't understand if I can preempt the controller method and return a view before it executes. I am sure I could execute code before the controller method runs, but how do I keep it from running in some instances and return a custom view, or direct to a different controller method?

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  • How to handle null return from custom HttpHandler in asp.net?

    - by Campos
    I'm using a custom ashx HttpHandler to retrieve gif images from a database and show it on a website - when the image exists, it works great. However, there are cases when the image will not exist, and I'd like to have the html table holding the image to become invisible so the "image not found" icon is not shown. But since the HttpHandler is not synchronous, all my attempts checking for image size at Page_Load were frustrated. Any ideas on how this can be accomplished?

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  • What is the preferred method of device-specific rendering in .net websites?

    - by alimac83
    I'm working on a website using webforms (although I'd be keen to hear how this works with MVC) and I'm trying to figure out the best approach for rendering content for mobile devices. Usually when I'm working on sites that have to be viewed on mobile devices, I use media queries to style the content differently. The problem is that in my current scenario I'm trying to display different content altogether, rather than just changing the layout of existing content. What's the preferred approach for this? I've had a look at 'device specific rendering' on msdn (http://msdn.microsoft.com/en-us/library/hkx121s4.aspx) although I'm not sure if this is a good approach? What are the pros/cons/alternatives? Thank you EDIT: I've found this but it's for use with mvc4, not webforms. EDIT #2: I think I've found what I'm after here but is this a good approach?

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  • [LINQ noob] Please help me convert this Python 3.x snippet to .net LINQ.

    - by Hamish Grubijan
    I want to sort elements of a HashSet<string> and join them by a ; character. Python interpreter version: >>> st = {'jhg', 'uywer', 'nbcm', 'utr'} >>> strng = ';'.join(sorted(s)) >>> strng 'ASD;anmbh;ashgg;jhghjg' C# signature of a method I seek: private string getVersionsSorted(HashSet<string> versions); I can do this without using Linq, but I really want to learn it better. Many thanks!

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  • How do I redirect to another page with ASP.NET?

    - by Sanctus2099
    I know it's a simple question but I really can't find anything on Google. Sorry if I'm not searching right. I created 2 pages and in the first one I have a button. What should I write in the C# code to change to redirect me on the second page? I usually know my way around C# but I'm totally new in ASP.

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  • How do I restrict the WCF service called by an ASP.NET AJAX page to only allow calls for that page?

    - by NovaJoe
    I have an AjaxControlToolkit DynamicPopulate control that is updated by calls to a WCF service. I know I can check the HttpContext in the service request to see if a user of the page (and thus, the control) is authenticated. However, I don't want anyone clever to be able to call the service directly, even if they're logged in. I want access to the service to be allowed ONLY to requests that are made from the page. Mainly, I don't want anyone to be able to programatically make a large number of calls and then reverse-engineer the algorithm that sits behind the service. Any clever ideas on how this can be done? Maybe I'm over-thinking this? Thanks in advance.

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  • How does asp.net MVC remember my false values on postback?

    - by Michel
    Hi, This is working, but how??? I have a controller action for a post: [AcceptVerbs(HttpVerbs.Post )] public ActionResult Edit(Person person) { bool isvalid = ModelState.IsValid; etc. The Person object has a property BirthDate, type DateTime. When i enter some invalid data in the form, say 'blabla' which is obvious not a valid Datetime, it fills all the (other) Person properties with the correct data and the BirthDate property with a new blank DateTime. The bool isvalid has the value 'false'. So far so good. Then i do this: return View(p); and in the view i have this: <%= Html.TextBox("BirthDate", String.Format("{0:g}", Model.BirthDate)) %> <%= Html.ValidationMessage("BirthDate", "*") %> Ant there it comes: i EXPECTED the model to contain the new, blank DateTime because i didn't put any new data in. Second, when the View displays something, it must be a DateTime, because Model.BirthDate can't hold anything but a DateTime. But to my surprise, it shows a textbox with the 'blabla' value! (and the red * behind it) Which ofcourse is nice because the user can seee what he typed wrong, but how can that (blabla)string be transferred to the View in a DateTime field?

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