c#
Question: Situation: There is an asp.net mvc application. There is a button by clicking on which the process of generating a certain report starts. The report can be generated for quite a long time, for example, several minutes. After starting the generation, it is also necessary to show the user …
c# – My implementation of a long running task with progress and its weaknesses Read More »
Question: Viewing a code here on SOpt, I noticed the use of the symbol "$" and I was in doubt about its use. What is the "$" symbol before a string ? What is it for? Why use it? Example using static System.Console; public class Program { public static void …
c# – What does the symbol "$" before a string mean? Read More »
Question: You need to write a console application in C# so that when you enter the run -h command, help is displayed with a description of the commands. static void Main(string[] args) { string command = string.Empty; if (args.Length != 0) { switch (args[0]) { case “-h”: help(); break; } …
Question: Question: Are there any guidelines for naming conventions for controls such as TextBox and Button? Please let me know if there are any guidelines that you can refer to. There was a naming convention for object Hungarian notation , but it seems to be from the VB6.0 era, guessing …
Question: I am developing an application which is responsible for generating xml documents and it signs them with a simple Xades Enveloped signature, The process I have to sign is as follows: I generate the xml file. Change to utf-8 the file. I sign this file, it is saved as …
how to change the encoding to sign a document in xml with utf-8 in c# Read More »
Question: When I send some null value to my view , and Razor tries to render the value, an exception is returned. Is there a way, when the view receives a null value, to render it as white space without having to keep doing if checks? Answer: Yes. Suppose for …
Question: There is an application code in which it is necessary to dynamically determine the file type (HTML or TXT) by content and, depending on the received file type, call the appropriate processing algorithm. interface IFileType { void Process(); } class HtmlFile : IFileType { public void Process() { Console.WriteLine(“HTML”); …
c# – The principle of open / closed when determining the file type dynamically Read More »
Question: How can I access the webcam to take a photo and upload it directly to my server? Is there any API that helps me? Answer: I've already done this using some DLLs from windows itself. See if this class I have helps: OBS: There's a lot of garbage because …
Question: I tried my luck in Google on this topic and finally got stuck. I'll start with GC – earlier in Schildt I read that the garbage collector cannot be called, that it is started automatically by the environment itself and nothing can be done about it, but I found …
c# – Dispose , Finalize , Destructor and GC class difference Read More »
Question: I have a big doubt in relation to where I should put my SQL query , whether in the code or in the database . Currently I have a procedure that is assembled according to the parameters I have, that is, filtros . procedure @escopoVerificacao varchar(MAX) = NULL SET …
