Global variables in c net

Question

How can I set a global variable in a C  web application   What I want to do is to set a variable on a page  master page maybe  and access this variable from any page     I want to use neither cache nor sessions   I think that I have to use global asax  Any help

User · Answer

lt summary gt      Contains global variables for project       lt  summary gt  public static class GlobalVar        lt summary gt      Global variable that is constant       lt  summary gt  public const string GlobalString    Important Text         lt summary gt      Static value protected by access routine       lt  summary gt  static int  globalValue        lt summary gt      Access routine for global variable       lt  summary gt  public static int GlobalValue   get       return  globalValue    set        globalValue   value            lt summary gt      Global static field       lt  summary gt  public static bool GlobalBoolean

User · Answer

Use a public static class and access it from anywhere    public static class MyGlobals       public const string Prefix    ID       cannot change     public static int Total   5     can change because not const     used like so  from master page or anywhere   string strStuff   MyGlobals Prefix    something   textBox1 Text    total of     MyGlobals Total ToString      You don t need to make an instance of the class  in fact you can t because it s static  new Just use it directly  All members inside a static class must also be static  The string Prefix isn t marked static because const is implicitly static by nature   The static class can be anywhere in your project  It doesn t have to be part of Global asax or any particular page because it s  global   or at least as close as we can get to that concept in object-oriented terms    You can make as many static classes as you like and name them whatever you want     Sometimes programmers like to group their constants by using nested static classes  For example   public static class Globals       public static class DbProcedures           public const string Sp Get Addresses    dbo  Get Addresses            public const string Sp Get Names    dbo  Get First Names              public static class Commands           public const string Go    go           public const string SubmitPage    submit now             and access them like so   MyDbCommand proc   new MyDbCommand  Globals DbProcedures Sp Get Addresses    proc Execute      or string strCommand   Globals Commands Go

User · Answer

You can create a variable with an application scope

User · Answer

You can create a base class in your application that inherits from System Web UI Page  Let all your pages inherit from the newly created base class  Add a property or a variable to your base class with propected access modifier  so that it will be accessed from all your pages in the application

User · Answer

I second jdk s answer  any public static member of any class of your application can be considered as a  global variable    However  do note that this is an ASP NET application  and as such  it s a multi-threaded context for your global variables  Therefore  you should use some locking mechanism when you update and or read the data to from these variables  Otherwise  you might get your data in a corrupted state

User · Answer

Just declare the variable at the starting of a class   e g  for string variable   public partial class Login   System Web UI Page       public string sError       protected void Page Load object sender  EventArgs e                   Page Load Code

[c#] Global variables in c#.net

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