WPF Application using a global variable

Question

I created a WPF application in c# with 3 different windows, Home.xaml, Name.xaml, Config.xaml. I want to declare a variable in Home.xaml.cs that I

Answer 1

As other people mentioned before either use App.Current.Properties or create a static class. I am here to provide an example for those who need more guidance with the static class.

1. Add a new Class

Right-click your project name in your solution explorer Add > New Item choose Class give it a name (I usually name it GLOBALS)

2. What that cs file should look like

using System;

namespace ProjectName
{
    public static class GLOBALS
    {
        public static string Variable1 { get; set; }
        public static int Variable2 { get; set; }
        public static MyObject Variable3 { get; set; }
    }
}

3. Add references into .cs files where you intend to use those variables

using ProjectName

4. We're done. Use it. Examples:

GLOBALS.Variable1 = "MyName"
Console.Write(GLOBALS.Variable1)
GLOBALS.Variable2 = 100;
GLOBALS.Variable2 += 20;
GLOBALS.Variable3 = new MyObject();
GLOBALS.Variable3.MyFunction();

On a side note, do notice that using the static class as global variables in c# is considered a bad practice (that's why there is no official implementation for globals), but I consider it a shortcut for when I am too lazy haha. It should not be used in the professional environment.