    System.Net.WebRequestMethods.Http
        .Connect = &quot;CONNECT&quot;
        .Get = &quot;GET&quot;
        .Head = &quot;HEAD&quot;
        .MkCol = &quot;MKCOL&quot;
        .Post = &quot;POST&quot;
        .Put = &quot;PUT&quot;
        
Ultimately, though; since `const` expressions are burned into the caller, this is identical to using &quot;GET&quot; etc, just without the risk of a typo.

Also exists [`System.Net.Http.HttpMethod`][1] which can serve instead of enum. You can compare them `aMethod == HttpMethod.Get`, etc. To get string method name call e.g. `HttpMethod.Get.Method`. 


  [1]: https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpmethod

In ASP.NET MVC they&#39;re in **System.Web.Mvc.HttpVerbs**.  But all methods that take one of these enum values also has a text override, as there is no complete set of HTTP verbs, only a set of currently defined values (see [here][1] and [here][2] and [here][3]).  

You can&#39;t create an enumeration that covers all verbs, as there is the possibility that verbs can be added, and [enumerations have versioning issues][4] that make this impractical.


  [1]: http://www.ietf.org/rfc/rfc2518.txt
  [2]: http://www.ietf.org/rfc/rfc2616.txt
  [3]: http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
  [4]: http://blogs.msdn.com/brada/archive/2004/01/05/50987.aspx

In **ASP.NET Core** you will find a collection of http method strings in the [HttpMethods.cs][1] class under the `Microsoft.AspNetCore.Http` namespace.

This class also offers boolean helpers such as `IsGet()` or `IsPost()` for better semantics. 

Please note that these strings are exposed as `public static readonly string` and not as `constants`.

**UPDATE 2020-05-17:** `GetCanonicalizedValue(string method)` was added to the `HttpMethods.cs` class in ASP.NET Core v5, which returns the static instance equivalent to the provided string method name.


  [1]: https://github.com/dotnet/aspnetcore/blob/v5.0.4/src/Http/Http.Abstractions/src/HttpMethods.cs

I have the following makefile that I use to build a program (a kernel, actually) that I&#39;m working on. Its from scratch and I&#39;m learning about the process, so its not perfect, but I think its powerful enough at this point for my level of experience writing makefiles.

    AS	=	nasm
    CC	=	gcc
    LD	=	ld
    
    TARGET		=	core
    BUILD		=	build
    SOURCES		=	source
    INCLUDE     =   include
    ASM 		= 	assembly
    
    VPATH = $(SOURCES)
    
    CFLAGS	=	-Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions \
    			-nostdinc -fno-builtin -I $(INCLUDE)
    ASFLAGS	=	-f elf
    
    #CFILES		=	core.c consoleio.c system.c
    CFILES		=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
    SFILES		=	assembly/start.asm
    
    SOBJS	=	$(SFILES:.asm=.o)
    COBJS	=	$(CFILES:.c=.o)
    OBJS	=	$(SOBJS) $(COBJS)
    
    build : $(TARGET).img
    
    $(TARGET).img : $(TARGET).elf
    	c:/python26/python.exe concat.py stage1 stage2 pad.bin core.elf floppy.img
    
    $(TARGET).elf : $(OBJS)
    	$(LD) -T link.ld -o $@ $^
    
    $(SOBJS) : $(SFILES)
    	$(AS) $(ASFLAGS) $&lt; -o $@
    
    %.o: %.c
    	@echo Compiling $&lt;...
    	$(CC) $(CFLAGS) -c -o $@ $&lt;
    	
    #Clean Script - Should clear out all .o files everywhere and all that.
    clean:
    	-del *.img
    	-del *.o
    	-del assembly\*.o
    	-del core.elf



My main issue with this makefile is that when I modify a header file that one or more C files include, the C files aren&#39;t rebuilt. I can fix this quite easily by having all of my header files be dependencies for all of my C files, but that would effectively cause a complete rebuild of the project any time I changed/added a header file, which would not be very graceful.

What I want is for only the C files that *include* the header file I change to be rebuilt, and for the entire project to be linked again. I can do the linking by causing all header files to be dependencies of the target, but I cannot figure out how to make the C files be invalidated when their included header files are newer.

I&#39;ve heard that GCC has some commands to make this possible (so the makefile can somehow figure out which files need to be rebuilt) but I can&#39;t for the life of me find an actual implementation example to look at. Can someone post a solution that will enable this behavior in a makefile?

EDIT: I should clarify, I&#39;m familiar with the concept of putting the individual targets in and having each target.o require the header files. That requires me to be editing the makefile every time I include a header file somewhere, which is a bit of a pain. I&#39;m looking for a solution that can derive the header file dependencies on its own, which I&#39;m fairly certain I&#39;ve seen in other projects.

How can I have a Makefile automatically rebuild source files that include a modified header file? (In C/C++)

    div#thing {
      position: absolute;
      top: 0px;
      z-index: 2;
      margin: 0 auto;
    }

    &lt;div id=&quot;thing&quot;&gt;
       &lt;p&gt;text text text with no fixed size, variable font&lt;/p&gt;
    &lt;/div&gt;

The div is at the top, but I can&#39;t center it with `&lt;center&gt;` or `margin: 0 auto`;

Center Align on a Absolutely Positioned Div

I need to check the `RequestType` of an `HttpRequest` in ASP.NET (or `WebRequest.Method`). I know that I can just use the string values &quot;`POST`&quot; or &quot;`GET`&quot; for the request type, but I could have sworn there was a constant somewhere in some class in .NET that contained the values.

Out of curiosity I was wondering if anyone knew what class these string constants for `GET` and `POST` were in. I&#39;ve tried searching online but I&#39;ve had no luck, so I thought I&#39;d ask here.

Where is the constant for &quot;HttpRequest.RequestType&quot; and &quot;WebRequest.Method&quot; values in .NET?

<p>I need to check the <code>RequestType</code> of an <code>HttpRequest</code> in ASP.NET (or <code>WebRequest.Method</code>). I know that I can just use the string values "<code>POST</code>" or "<code>GET</code>" for the request type, but I could have sworn there was a constant somewhere in some class in .NET that contained the values.</p>
<p>Out of curiosity I was wondering if anyone knew what class these string constants for <code>GET</code> and <code>POST</code> were in. I've tried searching online but I've had no luck, so I thought I'd ask here.</p>


I want to get the overall total CPU usage for an application in C#. I&#39;ve found many ways to dig into the properties of processes, but I only want the CPU usage of the processes, and the total CPU like you get in the TaskManager.

How do I do that?

How to get the CPU Usage in C#?

What&#39;s the best way to get a temp directory name in Windows?  I see that I can use `GetTempPath` and `GetTempFileName` to create a temporary file, but is there any equivalent to the Linux / BSD [`mkdtemp`](http://linux.die.net/man/3/mkdtemp) function for creating a temporary directory?

Creating a temporary directory in Windows?

I am just getting started with expression trees so I hope this makes sense. I am trying to create an expression tree to represent:

    t =&gt; t.SomeProperty.Contains(&quot;stringValue&quot;);

So far I have got:

    
        private static Expression.Lambda&lt;Func&lt;string, bool&gt;&gt; GetContainsExpression&lt;T&gt;(string propertyName, string propertyValue)
        {
            var parameterExp = Expression.Parameter(typeof(T), &quot;type&quot;);
            var propertyExp = Expression.Property(parameter, propertyName);
            var containsMethodExp = Expression.*SomeMemberReferenceFunction*(&quot;Contains&quot;, propertyExp) //this is where I got lost, obviously :)
            ...
            return Expression.Lambda&lt;Func&lt;string, bool&gt;&gt;(containsMethodExp, parameterExp); //then something like this
        }

I just don&#39;t know how to reference the String.Contains() method.

Help appreciated. 

How do I create an expression tree to represent &#39;String.Contains(&quot;term&quot;)&#39; in C#?

I know the standard way of using the [null coalescing operator][1] in C# is to set default values.

    string nobody = null;
    string somebody = &quot;Bob Saget&quot;;
    string anybody = &quot;&quot;;

    anybody = nobody   ?? &quot;Mr. T&quot;; // Returns Mr. T
    anybody = somebody ?? &quot;Mr. T&quot;; // Returns &quot;Bob Saget&quot;

But what else can `??` be used for? It doesn&#39;t seem as useful as the [ternary operator][2], apart from being more concise and easier to read than:

    nobody = null;
    anybody = nobody == null ? &quot;Bob Saget&quot; : nobody; // Returns Bob Saget

So given that fewer even know about null coalescing operator...

 - Have you used `??` for something else?

 -  Is `??` necessary, or should you just use the ternary operator (that
   most are familiar with)

  [1]: https://en.wikipedia.org/wiki/Null_coalescing_operator
  [2]: https://en.wikipedia.org/wiki/%3F:




Unique ways to use the null coalescing operator

I&#39;m trying to figure out how to parse out the text of an email from any quoted reply text that it might include.  I&#39;ve noticed that usually email clients will put an &quot;On such and such date so and so wrote&quot; or prefix the lines with an angle bracket.  Unfortunately, not everyone does this.  Does anyone have any idea on how to programmatically detect reply text?  I am using C# to write this parser.

Parse email content from quoted reply

I&#39;ve got a bunch of properties which I am going to use read/write locks on. I can implement them either with a `try finally` or a `using` clause.

In the `try finally` I would acquire the lock before the `try`, and release in the `finally`. In the `using` clause, I would create a class which acquires the lock in its constructor, and releases in its Dispose method.

I&#39;m using read/write locks in a lot of places, so I&#39;ve been looking for ways that might be more concise than `try finally`. I&#39;m interested in hearing some ideas on why one way may not be recommended, or why one might be better than another.

Method 1 (`try finally`):

    static ReaderWriterLock rwlMyLock_m  = new ReaderWriterLock();
    private DateTime dtMyDateTime_m
    public DateTime MyDateTime
    {
        get
        {
            rwlMyLock_m .AcquireReaderLock(0);
            try
            {
                return dtMyDateTime_m
            }
            finally
            {
                rwlMyLock_m .ReleaseReaderLock();
            }
        }
        set
        {
            rwlMyLock_m .AcquireWriterLock(0);
            try
            {
                dtMyDateTime_m = value;
            }
            finally
            {
                rwlMyLock_m .ReleaseWriterLock();
            }
        }
    }

Method 2:

    static ReaderWriterLock rwlMyLock_m  = new ReaderWriterLock();
    private DateTime dtMyDateTime_m
    public DateTime MyDateTime
    {
        get
        {
            using (new ReadLock(rwlMyLock_m))
            {
                return dtMyDateTime_m;
            }
        }
        set
        {
            using (new WriteLock(rwlMyLock_m))
            {
                dtMyDateTime_m = value;
            }
        }
    }

    public class ReadLock : IDisposable
    {
        private ReaderWriterLock rwl;
        public ReadLock(ReaderWriterLock rwl)
        {
            this.rwl = rwl;
            rwl.AcquireReaderLock(0);
        }

        public void Dispose()
        {
            rwl.ReleaseReaderLock();
        }
    }

    public class WriteLock : IDisposable
    {
        private ReaderWriterLock rwl;
        public WriteLock(ReaderWriterLock rwl)
        {
            this.rwl = rwl;
            rwl.AcquireWriterLock(0);
        }

        public void Dispose()
        {
            rwl.ReleaseWriterLock();
        }
    }


&#39;using&#39; statement vs &#39;try finally&#39;

I&#39;m trying to get a handle on if there&#39;s a good time to use standard linq keywords or linq extension methods with lambda expressions.  They seems to do the same thing, just are written differently.  Is it purely a matter of style?

    var query = from p in Products
        where p.Name.Contains(&quot;foo&quot;)
        orderby c.Name
        select p;

    // or with extension methods:
    var query = Products
        .Where(p =&gt; p.Name.Contains(&quot;foo&quot;))
        .OrderBy(p =&gt; p.Name);
        
They&#39;re very similar with the second example being a bit more terse, but perhaps less expressive if you don&#39;t know what the =&gt; is doing.

**Other than writing terse code, are there other advantages to using the extension methods as opposed to the LINQ syntax?**

Extension methods syntax vs query syntax

How do I pass a value from a child back to the parent form? I have a string that I would like to pass back to the parent.

I launched the child using:

    FormOptions formOptions = new FormOptions();
    formOptions.ShowDialog();


How do I pass a value from a child back to the parent form?

I have snippets of Html stored in a table. *Not entire pages, no &lt;script&gt; tags or the like, just basic formatting.*

I would like to be able to display that Html as text only, *no formatting*, on a given page (actually just the first 30 - 50 characters but that&#39;s the easy bit).

How do I place the &quot;text&quot; within that Html into a string as straight text?

So this piece of code.

    &lt;b&gt;Hello World.&lt;/b&gt;&lt;br/&gt;&lt;p&gt;&lt;i&gt;Is there anyone out there?&lt;/i&gt;&lt;p&gt;

Becomes:

Hello World. Is there anyone out there?



How do you convert Html to plain text?

Problem, there&#39;s no method:

    bool ChangePassword(string newPassword);

You have to know the current password (which is probably hashed and forgotten).

How do you change a hashed password using asp.net membership provider if you don&#39;t know the current password?

I have a form that excepts a file upload in ASP.NET. I need to increase the max upload size to above the 4 MB default.

I have found in certain places referencing the below code at [msdn][1]. 

    [ConfigurationPropertyAttribute(&quot;maxRequestLength&quot;, DefaultValue = )]

None of the references actually describe how to use it, and I have tried several things with no success. I only want to modify this attribute for certain pages that are asking for file upload.

Is this the correct route to take? And how do I use this?


  [1]: http://msdn.microsoft.com/en-us/library/system.web.configuration.httpruntimesection.maxrequestlength.aspx

How to increase the max upload file size in ASP.NET?

I have a static class that I would like to raise an event as part of a try catch block within a static method of that class.

For example in this method I would like to raise a custom event in the catch.  

    public static void saveMyMessage(String message)
    {
        try
        {
            //Do Database stuff
        }
        catch (Exception e)
            {
                  //Raise custom event here
            }
    }

Thank you.

How to raise custom event from a Static Class

I&#39;m trying to trouble shoot a web service client in my current project.  I&#39;m not sure of the platform of the Service Server (Most likely LAMP).  I believe there is a fault on their side of the fence as i have eliminated the potential issues with my client.  The client is a standard ASMX type web reference proxy auto generated from the service WSDL.

What I need to get to is the RAW SOAP Messages (Request and Responses)

What is the best way to go about this?

Content Type	Original Author	Original Content on Stackoverflow
Question	Dan Herbert	View Question on Stackoverflow
Solution 1 - C#	Marc Gravell	View Answer on Stackoverflow
Solution 2 - C#	xmedeko	View Answer on Stackoverflow
Solution 3 - C#	user1228	View Answer on Stackoverflow
Solution 4 - C#	B12Toaster	View Answer on Stackoverflow

Where is the constant for "HttpRequest.RequestType" and "WebRequest.Method" values in .NET?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Center Align on a Absolutely Positioned Div

How can I have a Makefile automatically rebuild source files that include a modified header file? (In C/C++)

Attributions