Type 'Application.DataSet' is not defined

[daleykd]

Hey folks,

In VS 2005, I'm trying to use the DataSet wizard/designer. I can successfully go thru the entire process, but as soon as it is referenced in one of my forms, I get errors that state:

Type 'hplcContainer. POCDataSet' is not defined.

If I go into the form.designer.v b, I can fix it temporarily by either removing hplcContainer. or adding Global. in front. However, as soon as I save the form again, it rewrites the code.

Does anyone have any ideas why? I did this in a brand new application and it worked fine.

(This current application has a simple project that calls my Class Library, which is where ALL the work is.)

Thanks in advance,
Kyle

[daleykd]

In case anyone is interested...

It turns out that I had a class with the same name as my root namespace. I guess that confused the automatically created DataSet.

Kyle

[Killer42]

In case anyone is interested...

Ah, you're too quick for us. :)

Anyway, thanks for posting your results. This will be useful for anyone who comes looking for a similar answer in future.

[dgzo]

Hi. I'm having the same problem, only that I dont have a class name the same as my project and the compiler always puts before the name of the dataset, the name of my project like this:

Me.UnitsDS = New RequisitionPO.UnitsDS

where RequisitionPO is the name of my project.

I temporarily fix this issue doing one of two things. Either deleting the name of my project and leaving the line like this:

Me.UnitsDS = New UnitsDS

or writing the word global before the name of the project like this:

Me.UnitsDS = New Global.RequisitionPO.UnitsDS

but then again, when I go to the form and compile again it rewrites the code and the error shows up. And if I add more datasets, the error is reflected in all of them and all the objects that have to do with the datasets such as tableadapters.

Can anyone give me a clue on how to fix this maddening error?

Thanks in advance

Gabriela

[mmorin]

I had the same problem but it was due to a form with the same name as the dataset. I renamed the form and everything worked correctly.

Marty

Hi. I'm having the same problem, only that I dont have a class name the same as my project and the compiler always puts before the name of the dataset, the name of my project like this:

Me.UnitsDS = New RequisitionPO.UnitsDS

where RequisitionPO is the name of my project.

I temporarily fix this issue doing one of two things. Either deleting the name of my project and leaving the line like this:

Me.UnitsDS = New UnitsDS

or writing the word global before the name of the project like this:

Me.UnitsDS = New Global.RequisitionPO.UnitsDS

but then again, when I go to the form and compile again it rewrites the code and the error shows up. And if I add more datasets, the error is reflected in all of them and all the objects that have to do with the datasets such as tableadapters.

Can anyone give me a clue on how to fix this maddening error?

Thanks in advance

Gabriela

[Killer42]

dgzo, if you get a chance, please let us know how it turned out.

[Makandriaco]

3 years later and this post was really helpfull. I think Microsoft could have made the error clearer or fix the mixup. It is not uncommon (although not recomended) that people name a form same as the project.
Thank you

[Coder Poster]

same problem here, solution was deleting the namespace I used in a module.
visual studio walks a path of namespace.class name/formnames and if you are messing with one of those on your own you are 'het bokje'

[Mark J]

Thanks that was really helpful

[chaimaFI]

gratfull

thx a looot i aprociate you for you answer