Question

I want some variables to be global across the project and accessible in every form. How can I do this?

Answer 1

yes you can by using static class.
like this:

static class Global
{
    private static string _globalVar = "";

    public static string GlobalVar
    {
        get { return _globalVar; }
        set { _globalVar = value; }
    }
}

and for using any where you can write:

GlobalClass.GlobalVar = "any string value"