Subroutine in an Expression

[DoctorPolidori]

I want to send an email whe pressing a button building the email body using a subroutine similar to this one I wrte in Visual Basic

VISUAL BASIC SAMPLE CODE
Sub CreateMailtoText() 
dim manager, employee, skill, hours_perweek, project_name, start_week, end_week, mailto_string , your_name as String
manager = "peter.smith@company.com"
employee = "carla.petterson@company.com"
skill = "Excel"
project_name = "'Jobb åt folket 2024'"
hours_perweek = "4"
start_week = "w44 2023"
end_week = "w48 2023"
your_name = "Calle Requester"

mailto_string = "Hi " _
& UCase(Mid(manager,1,1)) & Mid(manager,2,InStr(manager,".")-2) & "!" & vbCrLf & vbCrLf _
& "I hope you are doing well." & vbCrLf _
& "I believe you have a resource named " & employee _
& " with top " & skill & " skills" & vbCrLf _
& "and I wonder if she/he could be available to help on project " & project_name _
& hours_perweek & "/week between week " & start_week & vbCrLf _
& "and " & end_week & vbCrLf & vbCrLf _
& "Thanks in advance" & Chr(10) & vbCrLf _
& your_name

Console.WriteLine(mailto_string)

End Sub