VB.Net中的三元运算

Question

I am using VB.Net with Visual Studio 2019

Public Shared intDbEnvironment As Integer = CInt(Command().Split(" ")(0))

Sometimes if no parameter is passed, the app crashes. Is there a ternary operator or something that I could use that sets the value to anything if its Nothing or "" or not a number

I've tried

Public Shared intDbEnvironment As Integer = Int32.Parse((Command().Split(" ")(0)))

TryParse Code

 Dim success As Boolean = Int32.TryParse((Command().Split(" ")(0)), intDbEnvironment)

Answer 1

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
    Dim i As Integer
    Integer.TryParse(TextBox1.Text, i)
    Debug.Print(i.ToString)
End Sub

If I enter a non integer in the text box - Guess what! I get 0. Because the Function will not attempt to add a value to i if it is not an integer. The default value of and Integer is 0 so that is the value from the declare.