Static

MS-Access

WPF / c# - Binding from UI to static property

30 Jul 2015 by stibee

Did you tried x:static?See http://stackoverflow.com/questions/32395/accessing-static-fields-in-xaml[^]

WPF

Binding

Static classes vs singleton

16 Feb 2017 by F-ES Sitecore

Using singletons it is easier to control when the class is initialised to use things like lazy-initialisation etc. Using static classes you're pretty much get what you're given, your class is initialised on creation. Also using sigleton your ultimate class is still an object rather than a...

How to declare a static variable in .h file and define it in a .c file ?

6 Nov 2018 by CPallini

You should declare your variable extern in the header and define it in the source file (without the static keywork: static in source file provides internal linkage). See, for instance: Internal linkage with static keyword in C - Stack Overflow[^].

GCC

microcontroller

How to declare a static variable in .h file and define it in a .c file ?

6 Nov 2018 by Richard MacCutchan

You should not be defining them in the header file if they are static, just in the .cpp file. If you are trying to create global variables then you should declare them extern in the header, and give them a value in one .cpp file only, like: // header.h extern int variable; extern int...

GCC

microcontroller

WebService: Should I use Static Class Within to Derive Results

16 May 2011 by Keith Barrow

With respect to the "main" service class: Although can add static methods to the class but these can't be implementation(s) of web methods. The web service is defined by its Interface and C#/VB won't allow you to implement Interface methods with statics, so you'll get a compile error. For this...

performance

webservice

WebService: Should I use Static Class Within to Derive Results

16 May 2011 by Espen Harlinn

Apart from what Keith mentions, there are a few things you can take into consideration.Proper design for a particular purpose depends on leveraging your knowledge about the data model, and the operations that will be performed on the data. There is nothing that prevents multiple threads...

performance

webservice

10 Jul 2011 by Manfred Rudolf Bihy

It's by design. Static methods have their merit in cases when functionality is independant to instance variables. Also it's important for program entry points like main in applications. Cheers!—MRB

Static Classes , Functions , values or others if exist in c++

22 Mar 2013 by Shrestha Santosh

Did you go through you academic book before you write down this question?there are different sources where you can find about the static class, function and values.Make sure you go through the book of Quote:E. Balagurusamy or go through this site to get this book and study in...

A static member variable export error

29 Apr 2013 by Leo Chapiro

Probably you have to have a declaration in your executable which uses DLL, like this:declspec( __dllimport ) extern int MyClass:: num;If it does not help, then add a static helper function for accessing that variable, for example:AFX_EXT_CLASS class CTest1{ static int...

How to Spring Clean Your Static Analysis: 10 Tips

7 May 2013 by c_a_dunlop

Get 10 tips for revitalizing your existing static analysis implementation—no matter what static analysis tool you're using.

ASP.NET Webform avoid loading datatable every Postback

1 Aug 2013 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Use Session. Store DataTable in Session and retrieve and modify whenever you want.

WebForms

Definition of static data members is not allowed inside class, why..?

4 Oct 2013 by BillW33

As SA said the definition of static members is allowed. I was able to compile your code and it runs without any errors from the compiler. You should have described to us exactly what error your are seeing, that greatly helps us to provide the answer that you need. BTW, I am using Visual Studio...

What is advanteges of constructors in comparing of static methods

14 Nov 2014 by Sergey Alexandrovich Kryukov

Are you sure this is a valid answerable question? This is a wrong approach to understanding things.You don't need to look for benefits. Instead, you need to 1) understand what exactly one or another language and platform feature does; 2) analyze what do you need to achieve; 3) based on that...

constructor

Should I make everything static or non-static?

16 Feb 2015 by OriginalGriff

As little as possible should be static - excepting extension methods, which have to be, and some methods which are "generic" to an application rather than specific to a class.C# is an OOPs language - and the first "O" is for "Object"! If you make everything static, then you are ignoring what...

How can I remove old values from static class C#?

25 Dec 2016 by Kornfeld Eliyahu Peter

Because you used static variable it will have the same value across all instances (which is probably very bad), so if you add elements form one instance those will be there when you are in an other instance...As told before this probably very bad and for sure not advised...However, if by any...

C#4.0

WPF

Static classes vs singleton

16 Feb 2017 by Maciej Los

Check past answers to the questions:Singleton Class Vs Sealed Class Vs Static Class[^]How can I decide that I should use Static class or singleton class ??[^]Difference between static class and singleton pattern? - Stack Overflow[^]

ATL coding guidelines

31 Mar 2010 by Deepak Goyal1

Hello,Does anybody know where I can get coding guidelines for ATL COM. I mean best coding practices or static analysis rules.Thanks!

VC8.0

ATL coding guidelines

31 Mar 2010 by Eugen Podsypalnikov

A possible beginning[^]... :)

VC8.0

Statically Link to QtWebKit 4.6.2

5 Apr 2010 by geekox86

I tried to compile Qt+Webkit statically with MS VS 2008 and the following worked.C:\Qt\4.6.2 configure -release -static -opensource -fast -no-exceptions -no-accessibility -no-rtti -no-stl -no-opengl -no-openvg -no-incredibuild-xge -no-style-plastique -no-style-cleanlooks -no-style-motif...

Call mehtode in 2nd Form from 1st Form

19 May 2010 by Not Active

You'll need to pass a reference to the Serial class to the child form obviously. :rolleyes: Create a overloaded constructor and pass it in or create a property and set it.

hello and thanks

9 Aug 2010 by Christian Graus

Godaddy is crap. Beyond that, don't post your email address on a public forum unless you want a bigger penis and a russian wife, and use the article forum to talk to an article author. it's at the bottom. This is quick questions, a general forum.

c-like static in c#?

24 Aug 2010 by Sauro Viti

What you are talking about is something like this:void SomeFunction(void){ static int sVar = 1; ...}It is possible to do this in C and C++, but it is not possible in C#. Be aware that the C language is not object oriented and the C++ is a multi paradigm language.The C#...

How to acces a Main form method from Dialog form without creating an instance?

27 May 2011 by Not Active

I think if you researched patterns like MVC or MVVM you would get a solution. Anything that required access or manipulation of a UI element should, of course, be in the form or dialog. Anything else can be moved to an external class so it can be used in any situation. Use databinding to...

Different handling of statically linked libraries in VS2003 and VS2010

10 Jan 2013 by Allgaeuer

Ok, i found the solution.See the following links:Visual Studio 2010 not autolinking static libraries from projects that are dependencies as it should be supposed to[^]What does the “Link Library Dependency” linker option actually do in Visual Studio 2010?[^]

dependency

A static member variable export error

29 Apr 2013 by pengm

static export error: in test1.dll: xxx.h class AFX_EXT_CLASS CTest1 { static int num; } xxx.cpp int CTest1::num = 0; in a cpp of test2.dll: test2 is dependent test1.dll ... int i = CTest1::num; ... in a cpp of...

Definition of static data members is not allowed inside class, why..?

3 Oct 2013 by Sergey Alexandrovich Kryukov

This is just the false statement. Of course they are allowed. Why not?!I never heard of C++ version which would not allow such members, it would be against everything. :-)[EDIT]Please read:...

Definition of static data members is not allowed inside class, why..?

2 Oct 2013 by pasztorpisti

C++ allows the initialization of static members inside the class declaration only in case of static const integral values.class CStaticTest{public: void Test() { printf("%s(%d)\n", __FUNCTION__, g_Member); }private: static const int64 g_Member =...

Console Application in C# using static variables

11 Dec 2014 by Sergey Alexandrovich Kryukov

Trying to make anything global is really a bad habit. Why?Static methods, though, are very useful, but only use them if they work only with the object passed as parameters, plus (optional) return object, nothing else; it will help you to avoid static variables, which are potentially...

console

Static variables on ASP pages in different scenarios

6 Jan 2015 by Nathan Minier

A static field will always refer to the same memory location (in the same AppDomain), regardless of which instance of the class uses it. This will mean that all instances of TestClass have the same intEditor and strName. It doesn't matter what file the code sits in, at the end of the compilation...

WPF / c# - Binding from UI to static property

30 Jul 2015 by Maciej Los

Not sure i understand you well (because of this: "the required direction is from the UI to the property; The other direction is not required, but doesn't make a difference"), but...I'd suggest to read this: Static Classes and Static Class Members (C# Programming Guide)[^] - Static Members...

WPF

Binding

Best way of creating and reusing datacontext in asp.net mvc application

10 Oct 2015 by Member 10772541

Hello Guys,I read below post and confused what is the best way for datacontext creation and consumption ?http://www.foliotek.com/devblog/avoid-static-variables-in-asp-net/[^]I always thought that we should use singleton like below(+locking) private static ModelDataContext...

How do I declare a static readonly object but keep the fields constant in c#?

25 Jan 2016 by Philippe Mori

One way to do it is to derive from an interface with only read-only members. And you change the type of the "constant" to be the type of that interface instead.interface IPointXY{ float X { get; } float Y { get; }}public class PointXY : Point2D, IPointXY { public static...

read-only

Static property with non-static list<T>

1 Aug 2016 by johannesnestler

No memory leak - wyh do you think that? - but no need to recreate the same list again and again on every property access. Just make a static List variable and initialize once (if null), then return the list.

C#4.0

Show data on map jquery

19 Sep 2016 by Karthik_Mahalingam

Quote:Uncaught ReferenceError: getdata is not definedgetdata function is enclosed with jquery, remove it. $( function getdata(obj) { and remove ) at the end of the function.

When static block is placed in a program is static block is local part of constructor area ?

15 Oct 2016 by Richard MacCutchan

Your constructor will print that value of parameter x Not instance value x. If you want the latter then you need to use the this Prefix to disambiguate it, thus:System.out.println(this.x);

Java

[C#] why when the main method is static all other methods needs to be static ?

28 May 2017 by OriginalGriff

They aren't! The main method must be static, because static methods do not need an instance of the class in order to be called - all non static methods require an instance of the class to be created before you can call them. Since the main method is where your application starts, you can't...

Compile static library with cstring

17 Jul 2017 by Jochen Arndt

It would be good to see the full error message to see which function(s) are missing. If you build your app without MFC support, it is not linked with the library that contains the CString support functions. Because you are including atlstr.h, you are not getting compilation errors. But in the...

CString

A field initializer cannot reference the non-static field, method, or property

10 Aug 2017 by BillWoodruff

The compiler is telling you that it has not completed compiling the Class, and the Method body you try to reference is not available. Create a Constructor for the Class and set the reference to the Method there: public partial class ScreenShotConfigurationForm : Form { private const int...

reference

properties

How do I understand this static casting ?

14 Aug 2018 by Richard MacCutchan

static_cast

casting

C#: performance public class with static method,

17 Aug 2018 by OriginalGriff

No. For a method there is no significant performance difference - the code is loaded once only for all instances regardless of whether it is static or instance related. The individual instances do not get a separate copy of the method as it's code, which is read only anyway!

C#: performance public class with static method,

17 Aug 2018 by Jochen Arndt

There is no significant difference in memory usage and peformance between static and non static methods. The only difference is that non static methods have a hidden parameter to the class instance. This results in a few more bytes of code which execution took some time. But it is negligible. ...

How to set limit for columns of 2d array using dynamic allocation in C

28 May 2021 by k5054

The simple thing to do is to add a width specifier to your format string e.g scanf("%32s\n", name[i] However, if you enter a name with spaces in it e.g. "James Earl Jones", then using the %s format, scanf will read this as 3 separate words, not...

Typecasting

Building Wireshark 1.12.5 Static Binaries for CentOS 5

7 May 2023 by ToughDev

How to build Wireshark 1.12.5 static binaries for CentOS 5

ATL coding guidelines

2 Apr 2010 by Alain Rist

You will find lots of interesting and well written code in Bjarke Viksøe's site ATL section[^].cheers,AR

VC8.0

call a non-static method from a static method in asp.net

6 May 2010 by Nishant_Mishra

Good Morning,I have written a Web Method which is called by page method through Java script, this web method executes on button click and as it needed to be static i m not able to call the page controls thus i have another non static method to retrieve the value of radio-button. no as web...

Call mehtode in 2nd Form from 1st Form

19 May 2010 by diialer

Hi,i've got a main form. It's an MDI Parent. In this parent i'm opening a second form and and i'm using a class.Looks like this:public partial class Main : Form { Serial serialPort = new Serial();[...] Util childForm = new Util();[...] ...

Call mehtode in 2nd Form from 1st Form

20 May 2010 by diialer

Is it possible, that you give me an example, cuz i can't find any article. May i search with the wrong keywords. :doh:

hello and thanks

9 Aug 2010 by Miladfa

Hi MohanThanks for providing a nice article.I am using your scripts for creating friendly url.Locall Machine is working fine.When I tried using this in two different shared hosting (Godaddy & 1And1)Its not working in both of the servers..GODADDY The page you tried to...

c-like static in c#?

24 Aug 2010 by DavidKiryazi

Hi,C# does not support static variables within methods. To do what you are trying to acheive, you should use a member variable with class scope (ie outside the method).Dave

c-like static in c#?

24 Aug 2010 by cppwxwidgets

it is impossible to have a static local variable in c# if you try to do so you will get the following errorError 1 The modifier 'static' is not valid for this item

c-like static in c#?

24 Aug 2010 by cppwxwidgets

Hi alli wanted to ask if it is possible to have a kind of variable in c# that behave like static local variable in c++,I mean I want to have a local variable in a method, that it is assigned (initialize) just the first time the method invoked and after calling the method again and again it...

c-like static in c#?

24 Aug 2010 by DaveyM69

If you don't want it to change after initialization declare it static readonly. If you want to be able to change it later but have it retain the value between instances just mark it static.

c-like static in c#?

24 Aug 2010 by cppwxwidgets

I want it to be local and in local scope we are not allowed to use static keyword at all, isn't it?

Could you talk deeplier abt the performance and memory resources between static and instance methods?

30 Nov 2010 by ToniChen

Does static methods use up the application resources, which will not be released even if the instance of that class is released?And is there any potential risk to static methods if their class will be used in a multi-threading environment?In design wise, when should we use private static...

Could you talk deeplier abt the performance and memory resources between static and instance methods?

30 Nov 2010 by Hiren solanki

Let me try to make you clear about that.with static method It would have one and only instance you will access same instance when you call the static method, So it solves the problem of memory consumption.While with instance method method inside every object will have different values...

locking static variable

29 Apr 2011 by Sergey Alexandrovich Kryukov

The lock statement only makes sense if anything in your protected block is accessed by some other thread of the same process. If this is the case — the code is probably correct, if not — it is redundant at best.—SA

How to acces a Main form method from Dialog form without creating an instance?

27 May 2011 by H.Johnson

Hi all,I have a MainForm, a DialogForm and a MyClass containing most of the methods I use. I have the situation below;I) on MainForm : I create an instance of MyClass in order to access methods or procedures on MyClass. There is no problem for this.II) on MyClass : For some methods...

How to acces a Main form method from Dialog form without creating an instance?

27 May 2011 by Sergey Alexandrovich Kryukov

"Without creating an instance" simply means you need a static method with internal or public access. However, it's hardly an elegant way in case of main form class. If you don't need an instance of this class, why not having the method is some other class, let's sat, a utility class?—SA

How to acces a Main form method from Dialog form without creating an instance?

27 May 2011 by Sergey Alexandrovich Kryukov

10 Jul 2011 by deepak_rai

Why static members are accessible outside without making instance?

10 Jul 2011 by Abhinav S

That is the whole idea behind static.Any static method can be accessible without using an instance.

10 Jul 2011 by Nagy Vilmos

Further to the other answers, static members belong to the class and not the instance. Because they are class related, there is no requirement for an instance to be created. Also, as they do not belong to any specific instance, you cannot reference the this pseudo-variable.

Static Library *.lib - Strip Private Symbols, VC++ 2010

2 Sep 2011 by Im2N00By

Hello once again,I'm coding an static library and there is a one class. But I don't understand why all the member variables and methods (all variables are private) are visible in generated lib file. Even the paths and project command line can be found there. As-well there is a lot other...

VC10.0

Static Library *.lib - Strip Private Symbols, VC++ 2010

2 Sep 2011 by enhzflep

How about the option /PDBSTRIPPED ? Any good for your purposes?MSDN - "/PDBSTRIPPED (Strip Private Symbols)"[^]

VC10.0

Open source Dissassembler for extracting API function calls

26 Dec 2011 by lilyNaz

Hi,I need an open source dissassembler(preferably in c++) which can determine API function calls(statically ofcourse) so that I can extract API call sequences from it. Has anybody worked with an open source dissassembler?I need to disassemble the exe, and binary files which can be...

API

Open source Dissassembler for extracting API function calls

26 Dec 2011 by Mehdi Gholam

Try these :http://en.wikibooks.org/wiki/X86_Disassembly/Disassemblers_and_Decompilers[^]http://boomerang.sourceforge.net/[^]

API

Multiple Splitter Window in MDI Application

15 Feb 2012 by SHWRRMSH

I read this article on creating multiple splitter views on a Window using an MFC SDI Application. http://www.vckbase.com/english/code/doc_view/SdiMulti.shtml.htm How can I choose the split (For eg:- 1x2, 3x1 etc.,) from the menu bar and split the *current window* (not a new window) for an...

Multiple Splitter Window in MDI Application

16 Feb 2012 by Richard MacCutchan

Pleas do not post the same question in multiple places; you already posted this here[^].

Equality of static instance and MemberInfo

12 Mar 2012 by lukeer

Hi experts,I have a bunch of static member fields like shown below. Throughout the application, a FirstEntry should be unique.Now I want to log which one of those is pointed to by "testEntry".The ToString() method inherited from System.Object returns the class name. I need it to return...

forms

reflection

Static Class Property getting NULL when Custom Validation fired in Silverlight 4 - MVVM

12 Mar 2012 by Sunasara Imdadhusen

1. I have created Test Class which contain Static Class and Property.namespace QSys.Data.Domain.DataSecurity{ public static class TestData { public static string MyName { get; set; } }}2. Customer Model class and Custom Validationnamespace...

Dynamically change caption of static control

26 Jun 2012 by Vaibhav_J_Jaiswal

HiCan anybody tell me, that how to change the static control's caption dynamically on the click event of check box without using the click event message. My requirement is as follows:When user select the check box caption becomes shows "Weighted" and after deselect caption becomes...

Dynamically change caption of static control

26 Jun 2012 by Style-7

Check box will send the message WM_COMMAND. Use function IsDlgButtonChecked for check box and SetWindowText to static control.

Different handling of statically linked libraries in VS2003 and VS2010

10 Jan 2013 by H.Brydon

I'm not following the story quite 100% but it sounds to me that you have something mixed up in the __declspec(dllimport) and __declspec(dllexport) symbols. Make sure that you have these and the macro symbols using them set up correctly.

dependency

How to design/write GlobalConfig class?

31 Jan 2013 by GigaKatowice

Hi.I need to create a GlobalConfig class. But I want to derive from it in another class.Here's an example:public class BaseConfig { public string GlobalPath {get; set;}}public class ConfigA : BaseConfig { public string pathA {get; set;}}public class ConfigB : ...

How to design/write GlobalConfig class?

30 Jan 2013 by E.F. Nijboer

Change the private constructor to protected.Good luck!

pass 2D array from asp static method to javascript function

12 Feb 2013 by shajarian_lover

Hello all, I want to initailize Return an 2D string array from ASP static WEbMethod to Javascript functionas a Return value but i can't do itfor example, in ASP Method:[WebMethod]public static string[,] Method(string id){string[,] str; // the number of rows and columns are...

Javascript

Static Classes , Functions , values or others if exist in c++

25 Mar 2013 by Style-7

1) Static variable = global variable but visible only in target function or structure or class. So value of static variable is not delete.2) Static member of class or structure = global variable for all objects of the class. For example for count objects of the class.class MyClass{...

Static Classes , Functions , values or others if exist in c++

25 Mar 2013 by Richard MacCutchan

If you really want to learn about C++ then this is the place to start[^].

C# How do I reference static classes?

27 Mar 2013 by Grant Mc

Could someone please explain briefly how I create a static variable in a static classIn my code below I can create the Document and Element varaibales fine,So how do I create a varaible from a static class that I have created? public static class Settings { public...

C# How do I reference static classes?

27 Mar 2013 by Ian A Davidson

You can't create an instance of a static class. The whole reason it is static is because you don't need to do so, since all properties and methods are static.I suspect you want to make FileInfo non-static (and its properties as well).Regards,Ian.P.S. I would add that the System.IO...

C# How do I reference static classes?

28 Mar 2013 by José Amílcar Casimiro

static (C# Reference)[^]

A static member variable export error

29 Apr 2013 by JackDingler

The issue is likely that because you have a DLL importing symbols from another DLL, and that all of the symbols are being marked for export as du[DE] explained above.What you need are conditional declarations dependant on each DLL, so that they won't be mistakenly interpreted incorrectly by...

Background separation using static BG image in Open CV

12 Jun 2013 by vijay kakani

Hi Everyone,I'm new to Open CV and present working on my project which needs background separation done with OpenCV.Two days back I configured Open CV with Visual Studio C++ 2010 and worked on small tutorials from this blog http://opencv-srf.blogspot.ie/By I am not sure about how to...

Error on execution of a method (.NET / COM)

27 Jun 2013 by Jeneesh K. Velayudhan

I have one Initialize() in my class and I am calling a delegate wrapper method from this function as follows (the call back method will call around 20 times in a sec),public Initialize(){ CX_OUTPUT_CALLBACK cb = new CX_OUTPUT_CALLBACK(OutDelegateCb); ...

Definition of static data members is not allowed inside class, why..?

3 Oct 2013 by User 59241

I think your question is badly worded. It appears you wish to know the number of the class instance. You could achieve that by doing this:class foo{private: static int count; const int mycount;public: foo() : mycount(++count) { } const int getcount()...

GridView Utilities in C# and VB.NET

11 Oct 2013 by ASP.NET Community

GridView UtilitiesThe GetColumnIndexByHeaderText method shown below finds the column index inside a GridView control by passing to it a GridView

Gridview

Localize

11 Oct 2013 by ASP.NET Community

The Localize Control lets you localize any element on an .aspx page. It provides adesign time feature not offered by its base class, the Literal

Using Extension methods in ASP.NET 3.0 and 3.5 with generics.

11 Oct 2013 by ASP.NET Community

Since the dawn of asp.net, web based development has become a lot easier. It provides a great deal of control over designs and code. And affords

time

extension

Calling a Page method with complex parameter using jason.stringfy() method

11 Oct 2013 by ASP.NET Community

Most of the time when i tried to search for executing server side static page methods using jquery I came across simple example which explained how

manager

server

Json With Jquery MVC2 and Model Binder

11 Oct 2013 by ASP.NET Community

Hi Friends,In this article I will show the magic of Json and with a plus, the Model Binder that we know that MVC3 have by default, This is a simple

data

Factory Pattern

11 Oct 2013 by ASP.NET Community

Factory method is "Define an interface for creating an object, but let the subclasses decide which class to instantiate." In simple words we

How to Get MacAddress and Get All Adapter Types in ASP.NET

11 Oct 2013 by ASP.NET Community

How to Get MacAddress and Get All Adapter Types in ASP.NETIn this demo we will see how to get MacAddress in ASP.NET in easy steps. In the first

Using ASP.NET MVC and OpenXML api to stream Excel files.

11 Oct 2013 by ASP.NET Community

I’ve been heads down for the last several weeks Scrumming and it has been a while since I’ve updated my blog so I figured if I was going to keep your

MS-Excel

file

Call server side method from client side using script manager

11 Oct 2013 by ASP.NET Community

Hello friends.I am going to share with you a concept to call server side method from client side using script manager.Step 1 : Put ScriptManager on

server

ASP.NET HTML Editor - Upload images

11 Oct 2013 by ASP.NET Community

In this article we are seen how to create a custom HTML Editor control to add image button in it. Create A

HTML