Questions tagged as 'c#'

Tagged questions
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Visual studio 2017 c # BLL & DAL

I have a problem with saving and taking an image of the database. I would like to know a way to enter the image in the database taking into account that the taxpayer number is the primary key and then in another form can use code to search it th...
asked by 10.05.2018 / 12:51
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Navigation between pages (Android) [closed]

using Android.App; using Android.Widget; using Android.OS; using System; namespace ValModas { [Activity(Label = "ValModas", MainLauncher = true)] public class MainActivity : Activity { protected override void OnCreate(Bundle...
asked by 10.05.2018 / 07:46
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What is the purpose of ConcurrencyStamp and SecurityStamp in ASP.NET Identity?

The summary of both properties in the entity IdentityUser are in English: ConcurrencyStamp: A random value that should change whenever the user is persisted to the store. Translating would be something more or less like this:...
asked by 13.05.2018 / 07:14
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Timeout Sql Server on a Web Api request

When executing the query I get a TimeOut Sql Server error: Connection Method: public SqlDataReader GetDataReader(string comando) { SqlConnection conn = criaConexao(); // Cria Comando SqlCommand...
asked by 13.09.2018 / 08:38
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How to get the Schema of a Model in a DbContext made in the Entity Framework Core

Hello, I'm starting to work with EFCore and I'm doing an Override in the SaveChanges() method so that whenever there is a manipulation of the database I can log it. My problem is that I'm working with Schemas in my bank and I do not know h...
asked by 12.06.2018 / 13:48
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Is it possible to use the entity framework from a class library?

I usually use the entity framework in an MVC project but I would like to know if I can use it from a class library project     
asked by 03.06.2018 / 22:34
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ComboBox leaving form slow while loading data winforms C # visual studio

Good evening, I have a question. I have a client list that lists the cities in a combobox, but every time I open the registry it loads the data and this slows down the loading of the form, has some way of doing the query only the first time it o...
asked by 05.06.2018 / 00:14
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Register a user "admin" when running the application c # mvc

Good afternoon, I need some idea for a web system to automatically create a user Admin as soon as I run (open) the application. That is, when running the application with a zeroed bank, so that I do not have to register any users before loggi...
asked by 05.06.2018 / 19:29
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How to remove the title bar of the Android app VisualStudio C # Xamarin

I'm having trouble removing the title bar from the app I'm developing, I already tried the android studio and failed miserably just like in visual studio, since I'm not good at java I opted for the look that I have the most affinity for. H...
asked by 09.05.2018 / 22:45
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Crud with MongoDB and C # error in type or namespace

Following a tutorial from Macoratti here , errors appear in three types. I do not know what to add to solve it. I did a Copy and Paste and gave an error. Below the code: using MongoDB.Driver; using System; using System.Configuration; namespa...
asked by 08.06.2018 / 20:44