algorithmic modeling for Rhino
Hey everyone,
I have a Vb component with a mesh input. sometimes the input is empty/null. I just want to test for this. I thought it was, for example:
if inputMesh.isValid then
do stuff
endIf
but I get:
1. Object reference not set to an instance of an object. (line: 120)
What's the way to test for a null input (of mesh type)?
Thanks,
Brian
Tags:
Try:
If inputMesh Is Nothing Then
do stuff
End If
Actually in this case it would be if inputMesh is Not Nothing, but even then I get:
1. Error (BC30020): 'Is' operator does not accept operands of type 'Integer'. Operands must be reference or nullable types. (line 120)
Try IsNot all one word...
*smacks forehead*
Thanks David.
-Brian
My forehead has permanent palm prints in it. Might as well be a tattoo :)
I was explicitly trying to look for Null items a long ago by using the IsDBNull(item) Boolean, but with no luck. Again in this case it doesn't work cause I am missing something.
Private Sub RunScript(ByVal x As Mesh)
If IsDBNull(x) = False Then
print("what")
End If
End Sub
Any insights on that?
Welcome to
Grasshopper
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