As soon as you need to repeat several lines of code in 2 screens it is time to move it to a single method and call this method instead of copy pasting the code in several screens.But you cannot simply add a class (be it VB.NET or C#) in a LightSwitch project. However there is an application class in which you can add your new method.
To add a common method to the LS application:
- In Visual Studio right click on the LS project, in the dropdown menu choose ‘View Application Code (Client)
- In the Application class, add your method.
namespace LightSwitchApplication
{
public partial class Application
{
public void MyCommonMethod()
{
//write your common code here
}
- In each screen that needs to use this method, e.g. in a button execute method, call the method from the Application object.
partial void MyButton_Execute()
{
try
{
Application.MyCommonMethod();
}
catch (Exception ex)
{
this.ShowMessageBox(ex.Message);
}
}
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