Question An item with the same key has already been added.

[eggsandspamm]

I keep getting this error when I try to call the mainForm from another open form and change a label.text.

Dim main As New mainForm

                main.Label28.Text = "TEST"
                
                Me.Hide()

Please Help :/

 

[Joshdbr]

On what line is the error showing up?

 

[eggsandspamm]

On what line is the error showing up?

The first line of mainForm

 

[Joshdbr]

It appears that you already have a form open named "main".

 

[eggsandspamm]

It appears that you already have a form open named "main".

Yeah, the mainForm is open in the background. Can I not set a label for an already opened form?

 

[Joshdbr]

If you are trying to set the label of an already open form don't use "Dim main As New mainForm", just use this:

mainForm.Label28.Text = "TEST"
Me.Hide()

 

[eggsandspamm]

That gives me "An error occurred creating the form. See Exception.InnerException for details. The error is: An item with the same key has already been added." at

mainForm.Label28.Text = "TEST"

 

[Joshdbr]

You shouldn't be creating a form, just setting an item of an already existing one.

 

[eggsandspamm]

You shouldn't be creating a form, just setting an item of an already existing one.

I know. Thats what makes this error so annoying. I can't figure it out :/

 

[Joshdbr]

Is the form "mainForm" shown at that point in the code?

 

[eggsandspamm]

mainForm is in the background because this code is from an additional form that is being shown. Two forms are open

 

[Joshdbr]

After a quick Google search, it appears that this problem is computer specific. I would recommend trying the application on another computer, you can also try restarting your computer and logging in as an Administrator (or running the app as one). Sorry I couldn't be more help.

 

[eggsandspamm]

When I look at the call stack it looks like its trying to create a new form instead of just change a label..

it says

> ACARSAlaska.exe!ACARSAlaska.mainForm.New() Line 11 Basic

 

[Joshdbr]

OK, so now you know that a new form is trying to be created, you need to find out why . Without seeing the whole code it is kind of hard for me to help...