The `System.Diagnostics.Process` class has a property containing the start time which you can use to calculate how long it has been running:

    var current = System.Diagnostics.Process.GetCurrentProcess();
    DateTime startedAt = current.StartTime

Use `StopWatch` class for this feature.

Even if quite overkill, it will always work, even if the user changes the clock or even if there is some daylight saving changes during the process. -  [Julien Lebosquain][1] (Comment to my answer.)


  [1]: https://stackoverflow.com/users/183367/julien-lebosquain

You can Have a `Static DateTime Variable` for your Project, and store the datetime in the Constructor of your Main Class. Referencing this Static Variable, and comparing with current time helps you achieve your result

Is there any way in Notepad++ (or even with another tool) to change the line ending automatically **on multiple files in one go**?

i.e. convert a mix of windows EOL (`CRLF`) and UNIX EOL (`LF`) files to be all Windows EOL (`CRLF`)

Change EOL on multiple files in one go

In JavaScript when to use `window.opener` / `window.parent` / `window.top` ?

When to use window.opener / window.parent / window.top

And if it does, is there an easy way to get the total time since it started?

Does a C# app track how long its been running?

<p>And if it does, is there an easy way to get the total time since it started?</p>


I have a generic method that takes a request and provides a response.

    public Tres DoSomething&lt;Tres, Treq&gt;(Tres response, Treq request)
    {/*stuff*/}

But I don&#39;t always want a response for my request, and I don&#39;t always want to feed request data to get a response. I also don&#39;t want to have to copy and paste methods in their entirety to make minor changes. What I want, is to be able to do this:

    public Tre DoSomething&lt;Tres&gt;(Tres response)
    {
        return DoSomething&lt;Tres, void&gt;(response, null);
    }

Is this feasible in some manner? It seems that specifically using void doesn&#39;t work, but I&#39;m hoping to find something analogous.

void in C# generics?

I am trying to serialize some legacy objects that &quot;lazy creates&quot; various lists. I can not change the legacy behavior.

I have boiled it down to this simple example:

    public class Junk
    {
        protected int _id;

        [JsonProperty( PropertyName = &quot;Identity&quot; )]
        public int ID 
        { 
            get
            {
                return _id;
            }

            set
            {
                _id = value;
            }
        }

        protected List&lt;int&gt; _numbers;
        public List&lt;int&gt; Numbers
        {
            get
            {
                if( null == _numbers )
                {
                    _numbers = new List&lt;int&gt;( );
                }

                return _numbers;
            }

            set
            {
                _numbers = value;
            }
        }
    }

    class Program
    {
        static void Main( string[] args )
        {
            Junk j = new Junk( ) { ID = 123 };

            string newtonSoftJson = JsonConvert.SerializeObject( j, Newtonsoft.Json.Formatting.Indented );

            Console.WriteLine( newtonSoftJson );

        }
    }


The current results are:
{
  &quot;Identity&quot;: 123,
  &quot;Numbers&quot;: []
}

I would like to get:
{
  &quot;Identity&quot;: 123
}

That is, I would like to skip any lists, collections, arrays, or such things that are empty.

Can Newtonsoft Json.NET skip serializing empty lists?

I want to use my `DataGridView` only to show things, and I want the user not to be able to select any row, field or anything from the `DataGridView`.

How can I do this?

How to disable the ability to select in a DataGridView?

I have the following class:


    [Serializable]
    public class SomeModel
    {
        [XmlElement(&quot;SomeStringElementName&quot;)]
        public string SomeString { get; set; }

        [XmlElement(&quot;SomeInfoElementName&quot;)]
        public int SomeInfo { get; set; }
    }

Which (when populated with some test data) and Serialized using XmlSerializer.Serialize() results in the following XML:

    &lt;SomeModel&gt;
      &lt;SomeStringElementName&gt;testData&lt;/SomeStringElementName&gt;
      &lt;SomeInfoElementName&gt;5&lt;/SomeInfoElementName&gt;
    &lt;/SomeModel&gt;

What I need to have is:

    &lt;SomeModel&gt;
      &lt;SomeStringElementName Value=&quot;testData&quot; /&gt;
      &lt;SomeInfoElementName Value=&quot;5&quot; /&gt;
    &lt;/SomeModel&gt;

Is there a way to specify this as attributes without writing my own custom serialization code?

Serialize Property as Xml Attribute in Element

I tried to create `public void Main()` in C#; it says *no static void Main found*.    
What exactly does it mean for `Main` to be static?  I know the code works fine for `public static void Main()`.

But why does `Main` have to be `static`? 

Why should the Main() method be static?

I want to create 3 AppSettings config files:

- Database.config
- Messages.config
- Global.config

And after add in my App.config:

    &lt;appSettings file=&quot;Database.config&quot; /&gt;
    &lt;appSettings file=&quot;Messages.config&quot; /&gt;
    &lt;appSettings file=&quot;Global.config&quot; /&gt;

But when I try to access a key that there is in one of three files with the `ConfigurationManager`, I got the following error: 

&gt;Configuration system failed to initialize. Sections must only appear once per config file.

I cannot have more than one AppSettings config file? 

Multiple AppSettings files, is it possible?

I use underscores for my test methods for a better readability and I want to suppress FxCop errors/warnings for the whole test namespace.

How can I achieve this? I played with `GlobalSuppressions.cs` but nothing worked:

    [module: System.Diagnostics.CodeAnalysis.SuppressMessage(
        &quot;Microsoft.Naming&quot;, &quot;CA1707:IdentifiersShouldNotContainUnderscores&quot;,
        Scope = &quot;namespace&quot;, Target = &quot;Company.Product.Tests&quot;)]

    [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage(
        &quot;Microsoft.Naming&quot;, &quot;CA1707:IdentifiersShouldNotContainUnderscores&quot;,
        Scope = &quot;namespace&quot;, Target = &quot;Company.Product.Tests&quot;)]

&#39;SuppressMessage&#39; for a whole namespace

There seems to be a lot of confusing, sometimes conflicting, information with regards to making a .NET HTTPListener HTTPS capable. My understanding is as follows:

* One&#39;s C# code needs an `https` prefix (for example, `https://*:8443`) in order for the listener to understand that it needs to service SSL requests at this port.

* The actual SSL handshake happens under the covers and is handled by `http.sys` (buried somewhere on the Windows machine). The C# code doesn&#39;t have to explicitly manage the SSL handshake, because it happens under the covers.

* One needs to have a &quot;X.509 trusted certificate&quot; on the `httpListener` machine, and somehow that certificate needs to be bound to port 8443 (in this example).

Is my understanding above correct? If not, please educate me.

Regarding X.509 certificates, my understanding is:

* Use `makecert` to create an X.509 certificate. This certificate gets stored in the personal store and needs to get moved over to the Trusted Store (this is where the HTTP listener will look). It seems I can use `certMgr` to perform the move, or I can use `mmc` to effect the move. It seems there is more than one X.509 certificate format (`DER`, `Base64`, `pks`, pswd protected, `pks` private, etc.)... Is there a preferred format I should use?

Once I get the certificate into the trusted store, I need to bind it to the TCP port. I am on Windows&amp;nbsp;7: should I be using `httpcfg` or `netsh`?



Content Type	Original Author	Original Content on Stackoverflow
Question	broke	View Question on Stackoverflow
Solution 1 - C#	Lee	View Answer on Stackoverflow
Solution 2 - C#	Nikhil Agrawal	View Answer on Stackoverflow
Solution 3 - C#	Akhil	View Answer on Stackoverflow

Does a C# app track how long its been running?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

When to use window.opener / window.parent / window.top

Change EOL on multiple files in one go

Attributions