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Refresh Other Screen Data 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. How to create a lightswitch project?
2. How to create screen in lightswitch?
3. How to add button in lightswitch application?
4. What is button’s execute method?
5. How to create a lightswitch project?

Create A New Project

Add Screens In The Project

Iscreenobject And Application.Activescreens

Add Refresh Button

Adding Code In Refresh’S Execute Event

public partial class CreateNew {
  partial void RefreshOtherScreen_Execute() {
    ScreenRefreshClass.RefreshScreen < EditableGrid > (Application.ActiveScreens);
  }
}

public static class ScreenRefreshClass {
  public static void RefreshScreen < T > (this IList < IActiveScreen > screenList) where T: IScreenObject {
    var screens = screenList.Where((x) => x.Screen is T);

    foreach(var s in screens) {
      var screen = (T) s.Screen;

      screen.Details.Dispatcher.BeginInvoke(() => {
        screen.Refresh();
      });
    }
  }
}

Code Explanation

ScreenRefreshClass.RefreshScreen<EditableGrid>(Application.ActiveScreens);

1. As I am going to refresh the EditableGrid screen that is why I am passing EditableGrid in the angled bracket.
2. The parameter Application.ActiveScreens contains an IEnumerable of IActiveScreens (i.e. CreateNew and EditableGrid screen in this case).

var screens = screenList.Where((x) => x.Screen is T);

foreach(var s in screens) {
  var screen = (T) s.Screen;

  screen.Details.Dispatcher.BeginInvoke(() => {
    screen.Refresh();
  });
}