Error when Application change type to set splash screen

[SandmanINV]

Hi everybody, 

I start my api with an template inventor Addin by VB.net. 

After all done, I want to set splash for my api. 

But, when I change Applycation type from Sub main to Window Form Application.

I get an error when i start debug : 'Form 1' is a class type and cannot be used as an expression in vb.net

At the start of programe, i had an sub new like that 

Public Sub New(ByVal oApp As Inventor.Application)

        ' This call is required by the designer.
        InitializeComponent()
        Form1_loading()

        oinv = oApp

    End Sub

After get an error above, i start try create on above of that old subnew, error disappear. 

Public Sub New()
        InitializeComponent()

    End Sub

But when i try start a function i write with inventor, debugger show that "oinv is nothing".

How can I fix this. Please help becase I have just work in vb.net.

Thank you for reading.

[SandmanINV]

Somebody help me please

[SandmanINV · Accepted solution]

I had my solution. Thankyou