Global variable withing a project

snufse · August 16th, 2010, 08:10 AM

I have a project that has multiple .cs. The project is an xml read without any user interface. Is it possible to instanciate a variable in one .cs that can be read by another .cs? Or is there another way to do this? Thank you.

irProject · August 16th, 2010, 10:34 AM

hello
you can declare a static variable. In C# when you want to use a global variable you should declare a class that contains a static variable like this:

Code:

public class myVars
{
   public static string myGlobalVariable = "";
}

you can use this variable when you need:

Code:

myVars.myGlobalVariable = "test text";

// in other place
... = myVars.myGlobalVariable;

snufse · August 16th, 2010, 12:38 PM

How would I set a value in one .cs and be able to use the variable in another .cs. Will that not cause an issue when I try to instantiate the class the the .cs where I assign a value and trying to use that value in another .cs where instantiation is not known?

irProject · August 17th, 2010, 06:31 AM

Hello dear,
in C# when you want to access to a property or variable of a class, you should declare that variable as static:

Code:

public class firstClass
{
   public static string myVar = "";

   // set value in some function
   void mySetFunction()
   {
       myVar = "sample text";
   }
}

public class secondClass
{
    // read value in other function in secondClass
    void UseMyVar()
    {
        ... = firstClass.myVar;
    }
}

notice that the only way you can share a variable between classes, is declaring variable as static

snufse · August 17th, 2010, 07:34 AM

Hello irProject,

Thank you. that helps....