Linked Questions

What is the purpose of the Using block in C#? How is it different from a local variable?

Are there particular instances where I should (or shouldn't?) be using "using" blocks: using(SomeType t = new SomeType()){ ... }

i want to know what is the use of "using" keyword in c#, i am new to it.. when we need to use "using" keyword.. i googled it, could not be satisfied with answers. still i want to know some more from ...

I'm new to C#,been a pascal lover until I found C# in Depth.In Delphi there is a try{} statement that is also implemented in C#. However,I've seen some of you mentioning "Using(){} is better than try{...

I see loads of code snippets with the following Syntax using (RandomType variable = new RandomType(1,2,3)) { // A bunch of code here. } why not just declare the variable and use it? This Using ...

DUPE: Uses of "using" in C# I have seen people use the following and I am wondering what is its purpose? Is it so the object is destroyed after its use by garbage collection? Example: ...

Hi I was going through some examples in C# and came across some code similar to below : private void WriteData(string filePath) { using var writer = new System.IO.StreamWriter(filePath); //...

I have the following code: try { using (var context = new DataContext()) { if (!context.Database.Exists()) { ...

Do I really need to use comm.Dispose() and conn.Dispose() or directly used the using? using (OdbcConnection conn = new OdbcConnection()) { conn.Open(); OdbcCommand comm = new OdbcCommand(sql, ...

I'm not talking about references to assemblies, rather the using statement within the code. For example what is the difference between this: using (DataReader dr = .... ) { ...stuff involving data ...

I'm doing a tutorial on how to save a text file with StreamWriter. I understand how to do it but I started reading a tutorial on the StreamWriter Class to get a better understanding of it. In an ...

I am not sure how to use using statement correct. I try like this: [HttpDelete("{ClubId}", Name = "DeleteOpenings_Club")] public async Task<IActionResult> ...

A simple console application, in Visual Studio 2019, .Net Framework 4.7, Windows: static void Main(string[] args) { try { Console.WriteLine("In try"); throw new ...

I got stuck in the weeds of how IDisposable and the GarbageCollector work. Suppose you have an IDisposable object, which doesn't actually have an resources that it's holding onto (but the Dispose() ...

Considering the follow code can someone explain to me why and why not to use 'using'? I've read about the rule of thumb with IDisposable but why is IDisposable the determining factor? private string ...

Suppose I have private static MyClient _myClient that opens a connection to an external server. It implements IDisposable. The 'client' is created on first use: if (_myClient == null) _myClient = ...

Whats the difference and benifits of "using" in this case. I will state two simular cases please explain why I should or shoudn't use "using" before my reader in this case. string ...

I would like to know in which specific cases to use the USING statement, which is its main functionality when including it in the code. In my case I am scheduling a job for the university, the ...

In C# one can type the using verb in line width the code sometimes, like using (textwriter){ ..... } I like that writing style and am wondered what is required to allow that for my own Api's.

For example, I rarely need: using System.Text; but it's always there by default. I assume the application will use more memory if your code contains unnecessary using directives. But is there ...

Are there situations where it is appropriate to use a try-finally block without a catch block?

If I have a using block surrounding a try catch statement what will happen to the object inside that using statement should the catch fire an exception? Consider the following code: using (...

What does this statement means in C#? using (object obj = new object()) { //random stuff }

I keep finding conflicting results for this question. Let's look at this C# code of running an SQL query: using (SqlConnection cn = new SqlConnection(strConnectString)) { cn.Open(); using (...

I have been struggling to get the right c# code for getting the values after a PRAGMA table_info query. Since my edit with extra code was rejected in this post, I made this question for other people ...

Consider this code: public int DownloadSoundFile() { using (var x= new X()) { return x.Value; } } and this code: public int DownloadSoundFile() { if (x!=null) { return ...

Let's suppose I have this function that can be called several times from the main thread. Every time this is called, I create a WebClient object to download some data asynchronously. My question... ...

Currently my code is constructed as follows. using (var sqlCon = new SqlConnection(Context.ReturnDatabaseConnection())) { sqlCon.Open(); try { ...

I am new in C# that's why I am struggling with basic concepts. I have created multiple classes in one project under one namespace out which one class is having Main() and other classes don't have. ...

Hi I am creating basic form in Visual Studio 2012 Express. I am using Microsoft Access 2012 as database. My problem is when I press submit button I nothing happens. Syntax error in INSERT INTO ...