CODEWITHSUNDEEP
c#wpfvariables
Nicholas Mott
Nicholas Mott

Reputation: 112

Session or Global Variables c# wpf

Good day, I have an app that I'm busy doing for university. A user enters data on the MainWindow.xaml, I want to make the data that they entered on this window accessible throughout the application (Name, Surname etc. I know that I can parse the data into each individual window but I have 13 Windows total.

Is there a way that I can make a global or session variable in WPF that will allow me to access that data anywhere.

I have looked around for answers but using classes etc seems to be a bad way to go and I cant seem to find a solution that will work.

Thanks in advance.

Upvotes: 0

Views: 6364

Answers (2)

mm8
mm8

Reputation: 169160

Is there a way that I can make a global or session variable in WPF that will allow me to access that data anywhere.

Create a class with static properties:

public class ApplicationContext
{
    public static string Name { get; set; }
    public static string Surname { get; set; }
}

You can then access these properties from any other class in your application:

//set:
ApplicationContext.Name = "name...";
//get:
string name = ApplicationContext.Name;

You could also use the Application.Current.Properties collection if you don't want to create your own class for some reason:

//set;
Application.Current.Properties["Name"] = "name";
//get:
string name = Application.Current.Properties["Name"].ToString();

Upvotes: 3

Max Play
Max Play

Reputation: 4038

You can always mark your variables as public static, so they can be accessed from anywhere. You could simply create a static class that holds all your "global" data.

Another option is making the properties of your MainWindow class static but this would result in clustering information onto a class that is actually an interface, not a storage.

Probably the best thing to do is the following:

  • Create a class that is able to hold the data, let's call this class Person with all the variables needed to describe the person (name, surename, etc.)
  • Create a static class that has a public property of the type Person
  • From your MainWindow write your values into the property

There you go, you have a static (global) accessible instance of your data-collection that can be extended and has proper encapsulation and naming.

Something to add: There is no such thing as a "Session" or "Global" variable in C#. You can create classes in global space, but not variables and the word "session" reminds me of a webservice which WPF clearly isn't.

Upvotes: 1

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