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  • primary key datatype in sql server database

    - by ooo
    i see after installing the asp.net membership tables, they use the data type "uniqueidentifier" for all of the primary key fields. I have been using "int" data type and doing increment by one on inserts. Is there any particular benefits to using the uniqueIdentifier data type compared to my current model of using int and auto increments on new inserts ?

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  • Unit Testing VS 2008 Using Excel

    - by David
    When using Excel (2003) to provide data for my unit tests it seems to think that when a cell has TRUE / FALSE value that it is null when there has been no preceding cell values e.g. if (TestContext.DataRow["SatisfactionExtremelySatisfied"] != DBNull.Value) model.SatisfactionExtremelySatisfied = (bool)TestContext.DataRow ["SatisfactionExtremelySatisfied"]; Sample Excel Data DataRow SatisfactionExtremelySatisfied 0 1 2 TRUE 3 TRUE When reading the test data using OLEDB the cells with TRUE hold no value but when the preceding cells have the value FALSE entered it correctly gets the values TRUE. Am I missing something?

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  • How to listen to that property?

    - by mystify
    @constant kAudioSessionProperty_AudioInputAvailable A UInt32 with a value other than zero when audio input is available. Use this property, rather than the device model, to determine if audio input is available. A listener will notify you when audio input becomes available. For instance, when a headset is attached to the second generation iPod Touch, audio input becomes available via the wired microphone. So, if I wanted to get notified about kAudioSessionProperty_AudioInputAvailable, how would I do that?

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  • Entity framework 4 add to many-to-many

    - by mehanik
    I have model whith 3 tabels and one is link table with additional field: Groups Id Name Users Id Name Roles Id Name LinkTable Id GroupId UserId RoleId The quuestion is how to add 3 related entities: Code bellow doesn't work. using (var db = new dbEntities()) { db.Groups.AddObject(Group.CreateGroup(1, "TestGroup")); db.Users.AddObject(User.CreateUser(1, "AdminUser")); db.Roles.AddObject(Role.CreateRole(1, "Admin")); db.UserGroupRoles.AddObject(UserGroupRole.CreateUserGroupRole(1, 1, 1, 1)); db.SaveChanges(); }

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  • T4 template for Validation in MVC

    - by GibboK
    I'm using ASp.Net MVC and EF 4.3.1. Using POCO t4 template I'm able to create the POCO classes for my model but not validation. At the moment I'm using Partial Classes with MetaData for adding the annotation (leaving intact the POCO auto generated). My question: Could you point me out a tutorial, or show me an example of code or a link to a T4 template the also include automatic VALIDATION for my POCO? THanks

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  • mvc bind/post boolean to radiobutton

    - by Xuan Vu
    Hi all, I have a column in my Model with a NULLABLE boolean value. Now on my View (for editing), I would like to bind that to two radiobuttons: Yes & No. If the value is null, then just have the two radiobutton un-checked. How would I go to do that? Thanks.

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  • Django ModelAdmin.save_model() -vs- ModelAdmin.save_formset()

    - by anonymous coward
    I want to ensure that a user editing a particular model is saved in that models updated_by (FK User) field. I'm using mostly ModelForms (not necessarily the built in Admin), and wondering: In what cases would I need to override ModelAdmin.save_model() or ModelAdmin.save_formset()? Or, is that doing it wrong? If it's just the models' save() method that needs to be overridden, is there a proper way to access the request object there?

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  • Resources for Prformance testing

    - by munna
    Our small concern is entrusted with creating an Application on ASP.NET with client-server model. As we are almost done with the development we are creating a small team for Performance test. I have googled in the net about the topic but without much help. If anyone of you can share 'How, What and Why' about perf test, it would be great help.

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  • QuickGraph - How can I associate an Edge with a Class? (i.e. like you can with a Vertex)

    - by Greg
    Hi, Q1 - How can I associate an Edge with a Class? (i.e. like you can with a Vertex) In my case there are various types of edges I want to be able to model. So my real question I guess is how can I associate some level of data with Edges (e.g. edge type). The graph I was looking at using was: http://quickgraph.codeplex.com/wikipage?title=BidirectionalGraph&referringTitle=Documentation thanks

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  • Ruby on rails form validation issue

    - by Anooj
    Am pretty new to ROR. Need help in Rails form validation. Hey, am using rails 2.3.5 I have a basic validates_presence_of for the fields in the form. Now when i don't enter field details, i do get an error, but the error is displayed as: {{count}} errors prohibited this {{model}} from being saved There were problems with the following fields: {{attribute}} {{message}} {{attribute}} {{message}} Any help will be highly appreciated.

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  • suggestions on syntax to express mathematical formula concisely

    - by aaa
    hello. I am developing functional domain specific embedded language within C++ to translate formulas into working code as concisely and accurately as possible. I post prototype in the comment, it is about 2 hundred lines long. Right now my language looks something like this (well, actually is going to look like): // implies two nested loops j=0:N, i=0,j (range(i) < j < N)[T(i,j) = (T(i,j) - T(j,i))/e(i+j)]; // implies summation over above expression sum(range(i) < j < N))[(T(i,j) - T(j,i))/e(i+j)]; I am looking for possible syntax improvements/extensions or just different ideas about expressing mathematical formulas as clearly and precisely as possible (in any language, not just C++). Can you give me some syntax examples relating to my question which can be accomplished in your language of choice which consider useful. In particular, if you have some ideas about how to translate the above code segments, I would be happy to hear them. Thank you just to clarify and give actual formula, my short-term goal is to express the following expression concisely where values in <> are already computed as 4-dimensional array

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  • label to display graphics card or total system ram through registry possibly?

    - by NightsEVil
    hi all i have this great code that i love that will display the kind of processor model and speed like so RegistryKey Rkey = Registry.LocalMachine; Rkey = Rkey.OpenSubKey("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0"); Labelproc.Text = (string)Rkey.GetValue("ProcessorNameString"); and i was wondering if theres a way to do this for the kind of graphics card and the total installed system ram (in separate labels)

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  • Is there an open source MVP framework for C++?

    - by morpheous
    I am looking for a lightweight set of C++ classes that implement/show how to use the MVP design pattern, so that I can refactor some legacy code I am working on. A library/framework would be nice to get me started. A quick google search seems to bring up only C# examples - is anyone aware of any C++ ones out there? [Edit] I am particularly interested in a Passive viewer, as I want to completely decouple the view from the model.

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  • Cast IEnumerable<Inherited> To IEnumerable<Base>

    - by david2342
    I'm trying to cast an IEnumerable of an inherited type to IEnumerable of base class. Have tried following: var test = resultFromDb.Cast<BookedResource>(); return test.ToList(); But getting error: You cannot convert these types. Linq to Entities only supports conversion primitive EDM-types. The classes involved look like this: public partial class HistoryBookedResource : BookedResource { } public partial class HistoryBookedResource { public int ResourceId { get; set; } public string DateFrom { get; set; } public string TimeFrom { get; set; } public string TimeTo { get; set; } } public partial class BookedResource { public int ResourceId { get; set; } public string DateFrom { get; set; } public string TimeFrom { get; set; } public string TimeTo { get; set; } } [MetadataType(typeof(BookedResourceMetaData))] public partial class BookedResource { } public class BookedResourceMetaData { [Required(ErrorMessage = "Resource id is Required")] [Range(0, int.MaxValue, ErrorMessage = "Resource id is must be an number")] public object ResourceId { get; set; } [Required(ErrorMessage = "Date is Required")] public object DateFrom { get; set; } [Required(ErrorMessage = "Time From is Required")] public object TimeFrom { get; set; } [Required(ErrorMessage = "Time to is Required")] public object TimeTo { get; set; } } The problem I'm trying to solve is to get records from table HistoryBookedResource and have the result in an IEnumerable<BookedResource> using Entity Framework and LINQ. UPDATE: When using the following the cast seams to work but when trying to loop with a foreach the data is lost. resultFromDb.ToList() as IEnumerable<BookedResource>; UPDATE 2: Im using entity frameworks generated model, model (edmx) is created from database, edmx include classes that reprecent the database tables. In database i have a history table for old BookedResource and it can happen that the user want to look at these and to get the old data from the database entity framework uses classes with the same name as the tables to receive data from db. So i receive the data from table HistoryBookedResource in HistoryBookedResource class. Because entity framework generate the partial classes with the properties i dont know if i can make them virtual and override. Any suggestions will be greatly appreciated.

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  • Ruby on rails Interpolation issue

    - by nobrains
    Am pretty new to ROR. Need help in Rails form validation. Am using rails 2.3.5 I have a basic validates_presence_of for the fields in the form. Now when i don't enter field details, i do get an error, but the error is displayed as: {{count}} errors prohibited this {{model}} from being saved There were problems with the following fields: {{attribute}} {{message}} {{attribute}} {{message}} Any help will be highly appreciated.

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  • Best netbook for light development

    - by CodingBytes
    I'm looking into purchasing a netbook for traveling. I realize that most of these machines are designed for surfing the web and checking email. What model(s) are most likely to handle a development environment with Visual Studio 2008?

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  • removing items from a generic List<t>

    - by frosty
    I have the following method, I wish to remove items from my collection that match the product Id. Seems fairly straight forward, but i get an exception. Basically my collection is getting out of sync. So what is the best way to remove an item from a collection. public void RemoveOrderItem(Model.Order currentOrder, int productId) { foreach (var orderItem in currentOrder.OrderItems) { if (orderItem.Product.Id == productId) { currentOrder.OrderItems.Remove(orderItem); } } } Exception Details: System.InvalidOperationException: Collection was modified; enumeration operation may not execute

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  • Data Mapper implementation in C#

    - by cargo86
    Hi, My Domain Layer is implemented with Domain Model, and after PEAA, in Data Layer I have to use Data Mapper. NHiberbate is an implemantation of Data Mapper in C#? What alternative I have to use Data Mapper in a C# project? Thanks a lot!

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  • How do I make JavaScript to set these element values?

    - by dmanexe
    I have two fields that need to multiply each other and fill a 3rd form's value. Here's the HTML: <input type="text" name="estimate[concrete][price]" value="" onBlur="calc_concreteprice(document.forms.mainform);" /> per SF <strong>times</strong> <input type="text" name="estimate[concrete][sqft]" value="" onBlur="calc_concreteprice(document.forms.mainform);" /> SF = <input type="text" name="estimate[concrete][quick_total]" value="" /> Here's my JavaScript: function calc_concreteprice(mainform) { var oprice; var ototal; oprice = ((mainform.estimate[concrete][sqft].value) * (mainform.estimate[concrete][price].value)); ototal = (oprice); mainform.estimate[concrete][quick_total].value = ototal; } I want the first two forms to be multiplied together and output to the third. I think my problem may be within how I am referencing the input field names, with brackets (I'm taking results from this form as an array so I'm already used to working with the results as a multi-dimensional array). Thanks for the help!

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