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Global Variables In Lightswitch 2011

Software Requirement

1. Visual studio 2010 is installed on your machine.
2. Visual Studio 2010 service pack 1 is installed on your machine.
3. Microsoft Visual Studio Light switch 2011 is installed on your machine.

Prerequisite Knowledge

1. Basics about lightswitch.
2. How to create screens in lightswitch?
3. What is Application class in lightswitch?
4. What is the purpose of application.cs file?

Steps Of Execution

1. Create a new project
2. Add screens
3. Add global variable in application.cs
4. Set global variable in screen 1
5. Get global variable in screen 2

Create A New Project

Add Screens

Add Global Variable In Application.Cs

1. Right click on the project and click ‘Properties’.
2. From the ‘Screen Navigation’ tab click on the link ‘Click here to view application code’

Click to Enlarge


3. Add a property of type string (can of any data type depends upon the requirement). See the code of application.cs file below

namespace LightSwitchApplication {
	public partial class Application {
		public string MyGlobalVariable {
			get;
			set;
		}
	}
}

Set Global Variable In Screen 1

namespace LightSwitchApplication {
	public partial class Screen1 {
		partial void Screen1_Created() {
			// Write your code here.
			Application.MyGlobalVariable = "Global Variable Set in Screen 1";
			Application.ShowScreen2();
		}
	}
}

Get Global Variable In Screen 2

using Microsoft.LightSwitch.Presentation.Extensions;

namespace LightSwitchApplication {
	public partial class Screen2 {
		partial void Screen2_Created() {
			this.ShowMessageBox(Application.MyGlobalVariable);
		}
	}
}

Output