错误40：整数类型不符合名称空间或别名的条件

Question

Okay, this both a question and a solution. I was having a problem deploying a solution which very simply used linq and EF to query a couple DB2 tables and display the results to a datagridview. It worked fine on the development machine, but on the two other machines I tried, I would get "error 40: the type integer is not qualified with a namespace or alias."

After two days of trying various solutions, I decided to try debugging on one of the other machines.

Development machine is Windows XP with Visual Studio 2010. Deployment machines both Windows 7 with VS 2010.

Well, I immediately noticed that on the deployment machine, VS would give me a list of errors (integer not qualified etc.) which weren't showing on my development machine. The next thing I noticed was that when I double-clicked the .edmx file in the solution, it opened in xml instead of the visual display of the tables which I was using.

In this xml, every property/table column with a type of "integer" was underlined. Well, that doesn't make sense. Could this VS2010 not recognize the data type which was automatically generated by the other VS2010? Just out of desperation, I changed every instance of "Type='integer'" to "Type='int'" It debugged and ran on all 3 machines like a charm.

So, my questions are: 1) Is this a bug that exists between the two development environments (XP vs. W7) or do I have my development environment set up incorrectly? 2) On my XP machine, how can I edit my .edmx file in the xml view? Is it possible from within VS, or must I use a text editor?

Answer 1

Is there an include file for your edmx which defines the "integer" type on your development machine (or a difference in framework version)? It works when you switch to int as it is a primitive type and does not need to be defined. I've only done code first so this is not a strength for me, but I think your error message is giving you a good hint. There is no definition of the object integer in the edmx (or include files) on the other two environments. On your dev machine I think this must either exist as:

1. A definition of an integer object somewhere in the edmx/include files
2. An alias of integer to int somewhere in these same files
3. A different version of .NET of EF which recognizes integer out of the box?