Posts by Leonel Sanches da Silva • 88,623 points
2,010 posts
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3
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answers234
viewsA: Adding Text Box and Writing to Database. (with C#, entityframework 6.1.3)
Well, it’s all right for you to use the Begincollectionitem. Just implement now. My suggestion for the installments starts in the code of View down below: <div class="condicoes-pagamento"…
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answers1697
viewsA: Control view component visibility in the ASP.NET MVC 5 controller
Using session variables in this way is quite dangerous: @if ((bool)Session["TipoChamadoVisivel"]) { ... } Because you don’t test the existence of this content before using it. Also, this way of…
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answer215
viewsA: C# set a condition for a column value in a Datagridview with Datasource
If you talked about CalcFields, apparently you came from Delphi. In Webforms, things are not so different. What changes is the event you will use to display the values. In this case, the correct…
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answer2708
viewsA: How to configure ASP.NET MVC validation to accept en-BR dates?
Failed to add the jQuery.Validation.Globalize and make reference to it in the BundleConfig. This will possibly bring an extra problem: Yours DateTime will appear as YYYY-MM-DD. This is because the…
asp.net-mvc datetime jquery-validate annotation globalizationanswered Leonel Sanches da Silva 88,623 -
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answers1871
viewsA: Append methods in a list - Python
Its function does not print anything. So it does not return anything in print. I made some corrections: def setVar(number): var = number return var methodList = list() for y in range(4):…
pythonanswered Leonel Sanches da Silva 88,623 -
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answer77
viewsA: Which components should I use for color and photo selection in ASP.NET?
For colors there are two: the Jscolor and the Bootstrap Color Picker. To thumbnails you can use the Imageresizer. For display of thumbnails, you can use, combined with Imageresizer, the Owlcarousel.…
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answer148
viewsA: Controller dependency injection with Ajax
For this tutorial here, I think there are some things missing. It should be working, but apparently ASP.NET MVC gets lost somewhere at build time Controllers to the Ajax. Global.asax.Cs protected…
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answers633
viewsA: Loop variable declaration error
Put the whole declaration out of the loop: int i; for(i = 1 ; i <= 3 ; i++) { ... } Possibly this compiler version is quite old, or is defined for version C89. Another solution you can try to do…
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answers100
viewsA: Will I lose my databases if I update SQL Server 2012 Express to Standard?
Not. This link teaches you how to do the installation steps. In any case, I recommend a backup of schema + dice. There’s a step-by-step for that here.…
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answer1210
viewsA: Query using the Entity framework
It would be something like that: public tb_empresa ListarPorId(string id) { int idInt; Int32.TryParse(id, out idInt); var Consulta = contexto.Empresa.First(x => x.IDEMPRESA == idInt &&…
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answers447
viewsA: How to adapt / create a method that receives an anonymous class in C#
If the goal is to provide a dynamic mapper for C#, there are already some ready, like the Automapper. If the goal is to implement to learn, I can say that I have never seen this construction of…
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answers2406
viewsA: Access content from another project in the same Solution
The correct approach would be to create, on the administrative site, a suitable interface to serve the images. To do this, create a Controller called ImagensController. Inside it implement the…
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answer773
viewsA: Write include date using Entity framework
The correct way is to put the date update on SaveChanges of context: public override int SaveChanges() { var context = ((IObjectContextAdapter)this).ObjectContext;…
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answer208
viewsA: Doubt in the operation of Automatic Migration with Migratedatabasetolatestversion
With automatic Migration the database is updated also when there is deletion of some property from my model class? That is, in addition to including a new attribute if something is added to my…
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answers213
viewsA: Value priority data ordering using LINQ
It would be something like that: var lista = contexto.Entidade .Where(/* Sua condição aqui */) .OrderBy(e => e.Status == 2) .ThenBy(e => e.Status) .ToList();…
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answers204
viewsA: What is the name of the ... operator used in PHP 5.6?
Splat (or, Scatter, or Spread). It is an operator to indicate that its function can have any number of parameters. This name is specific to PHP. In other languages, the name changes. If your…
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answers2497
viewsA: What is the purpose of the "Spaceship Operator" <=> of PHP7?
The documentation already says well what it is: The operator Spaceship is used to compare two expressions. It returns an integer less than, equal to, or greater than zero when $a is respectively…
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answer103
viewsA: Self invoking functions in PHP 7. What are the advantages?
The resource goes in the direction of what we call, in other languages, delegate functions. There’s even a proposal for PHP 7 where the concept is even better developed. The advantage of this type…
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answer1689
viewsA: Error while running Reportviewer
Well, the mistake is quite clear and tells you exactly what to do. Basically, it’s putting the following in your web.config: <configuration> ... <system.web> ... <httpHandlers>…
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answer54
viewsA: Error adding migration with Migrations
All right. This message means: The code in mode designer for this migration includes a Snapshop (photo) of your model on Code First (the set of Models here, in the case). This photograph is used to…
entity-framework-6answered Leonel Sanches da Silva 88,623 -
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answer142
viewsA: Controller search structure mvc 5
Not. Visual Studio supposes all its Controllers are in the default project structure, that is, just below the directory Controllers. There is no way to change this behavior, because Views do not…
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answer164
viewsA: problem with jQuery ajax
This is not how you mount a JSON to send the request: var jsonData = $.ajax({ type: 'POST', dataType: 'json', contentType: 'application/json', url: url, data: "{ top: " + top + ", dataInicio: '" +…
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answers490
viewsA: Start connection to Signalr
I didn’t have to do any of that. An example: <script type="text/javascript"> $(function () { // Inicializo a conexão. var realtimeNotifier = $.connection.realtimeNotifierHub; // Trato as…
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answers1043
viewsA: ASP.NET Identity and mapping Many to Many (Fluent API)
First of all, I would like to say that I needed to study this solution during the interval weeks in which the question was asked and now and quite some time later, because I really had no knowledge…
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answers1166
viewsA: How to sort the data of a query by predefined values?
It would be something like that: SELECT * FROM usuarios INNER JOIN estados e on e.id = usuarios.estado_id ORDER BY e.sigla = 'MG' DESC, e.sigla The reference is here.…
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answers263
viewsA: In a MVC structure, can we create a model that represents a View (SQL)?
In theory, it can. Views in Mysql can insert and update records. Only cannot delete records from the tables involved. Of course the mounting of the MVC pattern on top of a View in SQL needs to be…
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answer294
viewsA: What is the purpose of the Onmodelcreating method and how does it work?
According to MSDN documentation on: This method is called when the model for a derived context has been initialized, but before the model has been locked down and used to initialize the context. The…
entity-framework-6answered Leonel Sanches da Silva 88,623 -
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answer1038
viewsA: Couldn’t perform the Edit because Another user changed the record
Actually the problem is with the BDE itself. Not with the database. If the answer were only about the BDE, my recommendation would actually be to abandon the BDE and go to a preview mapping of less…
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answer525
viewsA: Build Output: Consider app.config remapping of Assembly
This section is in the web.config: <configuration> <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> ... <dependentAssembly> <assemblyIdentity…
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answer161
viewsA: Edgejs and Entity Framework
Would you like to have a broader view of what the pros and cons of this strategy would be. Is it a good option? Or am I showing myself a lazy programmer? So far this answer is not. I explain: The…
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answers5198
viewsA: Difference between the use of typeof and is
is checks the entire inheritance structure of the object; typeof() returns the exact type of the object. For a better illustration: class Animal { } class Cachorro : Animal { } var a = new…
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answers11622
viewsA: Is it possible for a Javascript function to call a method that is in the Behind code of the page?
Yes. You’ll need the Ajaxextensionstoolbox in your project. First, put on your page the following: <asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" EnablePartialRendering="true"…
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answer455
viewsA: Consult in several fields of the record in a single query
It’s correct your approach, but I’d do it differently: var chamadosQuery = db.Chamado.Where(!e.StatusChamado); if(filtro != null) { chamadosQuery = chamadosQuery.Where(s =>…
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answer312
viewsA: Problems with accentuation and Entity Framework
I have two good ways for you to go: First Option: Phoning the String Here is an issue on which this is widely debated. I don’t like any of the solutions, so I wrote mine: public static class…
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answer77
viewsA: Set virtual field name
Thus: namespace Aplicacao.Core.Dominio { public class SubGrupo { [Key] public int Codigo { get; set; } [Column("TipoFormulario")] [ForeignKey("TipoFormulario")] public int TipoFormularioId { get;…
asp.net-mvcanswered Leonel Sanches da Silva 88,623 -
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answer78
viewsA: CRUD error with . NET MVC
Do not use [Index] for primary keys. Does not work. Change to the following: public class Estilo { [Key] public int EstiloId { get; set; } public string Nome { get; set; } public string Local { get;…
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answer140
viewsA: Problem creating Reportviewer in Asp.net mvc
Open the file ~/Views/Web.config (is not the root directory, it is another) and add the following entry: <configuration> ... <system.web.webPages.razor> <host…
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answer377
viewsA: Save data through POST in the database with Vraptor
You can’t do this: result.redirectTo(this).listAll() The life cycle of a Controller does not allow you to redirect another request to it. It could cause loops infinite of request headers. It is…
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answers1121
viewsA: PHP7 anonymous class. What are the advantages?
The main advantage is precisely not having to define the class to be able to use it. At certain times of the application, you need to use a class to, for example, represent a data structure or…
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answers176
viewsA: Is there a difference between "str(my_object)" and "my_object. __str__()" in Python?
Is there any difference between the method call __str__ (my_object.__str__() regarding the call for str (str(my_object))? Not. According to the documentation, str() flame objeto.__str__(). The…
pythonanswered Leonel Sanches da Silva 88,623 -
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answer183
viewsA: Understanding the same method in Pository and in service
Why in addition to using the same method, has also the return? It’s not quite the same method. As you’re using a multilayer application, for this example, it may seem like it’s the same thing, but…
jpaanswered Leonel Sanches da Silva 88,623 -
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answer73
viewsA: Details with @Autowired and Down object
In fact, this isn’t making much sense: @Autowired private AtividadeRepository atividadeRepository; private AtividadeDAO atividadeRepository = new AtividadeDAO(); In fact, you wouldn’t even pass the…
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answers2971
viewsA: Shuffling numbers from a list?
This answer teaches how to make some algorithms, such as Fisher-Yates, but it is important to note that this algorithm is not 100% random, according to the answer itself. The answer gives other more…
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answer32
viewsA: What are the errors in this code using EF6?
1. Nomenclature of Keys Names used for primary keys are outside the standard Entity Framework Ids search convention. The right thing would be: public partial class InvoiceDetail { public int…
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answer2062
viewsA: List all properties of a C#object?
It would be something like that: public void PrintProperties(object obj, int indent) { if (obj == null) return; string indentString = new string(' ', indent); Type objType = obj.GetType();…
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answers1921
viewsA: Create Reportviewer in Asp.Net MVC
I’m guessing you’ve already installed in your project the package Nuget Mvcreportviewer. The steps to setup and use are here. Examples for configuring the Controller are here. The respective…
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answer64
viewsA: Automated Deploy - Multi-customer version maintenance
A good start is in Alternative 2 of this reply, where I explain how to create transformations for the archive web.config. Here is one more example. For your case, there would have to be a…
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answers712
viewsA: Select separated by semicolon to xls
If the goal is to generate an XLS or XLSX, that which you are trying doesn’t make sense. The correct is use a Nuget package that helps you generate an Excel: PM> Install-Package EPPlus I rode a…
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answer141
viewsA: recover data from a view table in the controller
If I were you, I would do table produtos-escolhidos be a form: @using (Html.BeginForm()) { <table class="produtos-escolhidos table-overflow borda table_left span6"> <thead…
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answer348
viewsA: Questions with Entity Framework (Navigation Properties and Create method)
I have been reading several articles and so far I could not understand the real function of the navigation property. Two functions of the navigation properties: Indicate to the Entity Framework a…
entity-frameworkanswered Leonel Sanches da Silva 88,623