I have a program made in Visual Basic 6 which access data from a database (made with Microsoft SQL server management studio express 2000 then migrated to 2005) and puts all data into an immense GridView.
The views, typedlists, queries, etc... all have to go through LLBLGenPro, which is used from what i learned to regenerate the entire code of our program in case we need to add anything. The project on LLBL contains entities, typedlists and typedviews. I'm not a pro of LLBLGenPro and i'm just starting to discover it
I have to add two columns to the Gridview with two specific tables columns containing the information i need. So i went onto the database to modify the view i needed to get the required data (which now gives me the two more desired rows), then i loaded the database again in LLBLGenPro and made sure to check my new fields in the typedList that contains them. I regenerated the program, and
started the visual basic project. My columns appear in all the files where they should be, with the right names (the typedlist and the views referring to it). The classes now find 23 column indexes instead of 21. All seems fine for now.
The typedList is then imported into the main class:
Private _typedList As New DBSqlTypedList.MyClassNameTypedListTypedList
All the items from the table in the DB are already loaded correctly by the code using filters and appear in the program without problem. The typedlist we need (imported as _typedList) fills the data in the gridview (GridBT) with the following lines:
If isOpenSoftware Then
With Me.gridBT
.AutoGenerateColumns = True
.AlternatingRowsDefaultCellStyle = Nothing
.DataSource = _typedList
Now here's the problem: _typedList does not see my two news rows at all and they don't appear in the grid at all.
Typing _typedList.item(0).xxxx for example gives me access to all the rows that were already there but none of the two i added appear in it.
Did I forget something in LLBLGenPro?
Don't hesitate to tell me if you think i didn't send enough code or information!
Related
I have problems to refresh the structure of a table in my universe.
We have added some data to a reference table which is used in universe. After checking the new data in (Oracle 11g) database, found everything OK.
Then opened up designer in BO, imported the universe, looked up the associated table which only shows the existing items (not the new ones) - which seemed ok for me. I clicked on "View"/"Regenerate structure" but BO says that the structure does not need to be regenerated?
I have no idea what goes wrong and how I can add the new items to the table in my universe. Or do I have to update the content of a table differently?
It's possible that Designer isn't properly reading the database's data dictionary, and therefore not seeing the new column.
Data fields do not have to be present in the model in Designer in order for objects to reference them. So I would create a new universe object that references one of the new fields, and parse it. If it parses, then the field really is there and Designer just isn't seeing it. However if it doesn't work (i.e., you get an "invalid identifier"-type error), then the field is not there.
Joe's answer gave me the hint to check again why the new fields have not been there. And finally I found it. My "table" was a view which had to be actualized (SQL-select statement) and after that I could pick up the data into my universe and as shown in reports. Now everything is fine.
I'm working with Visual Studio Reports (rdlc files) for the first time, so I'm still quite new to it, and I don't know if this can actually be done.
I want to have a report that contains multiple tables of the same "type" (i.e.: with the same columns).
Now, obviously I can do this "by hand" by adding multiple tables to the designer. But here's the catch: I don't know beforehand how many tables I have to display!
So basically what I'd want is some sort of "repeater", a way to put "a list of tables" on the report, and then pass an array of data sources in code that would be used to populate them.
Can this be done at all? I don't see anything obvious in the designer that would allow me to achieve this... is it possible?
If not, could this maybe be done with a more advanced solution, like Crystal Reports?
If your tables have the same columns - use single table with the grouping by whatever criteria that defines "how many" tables you need to have. It would appear as if you have multiple tables on the resulting report. You can display report header for each group and if needed start each on new page.
Bottom line, don't think about it as multiple tables, it's the same table with the data driving how it is being displayed on the report.
Maybe helpful:
https://msdn.microsoft.com/en-us/library/ms251700(v=vs.90).aspx
http://www.codeproject.com/Tips/767067/RDLC-Report-Grouping-with-Page-Break-Table-Header
Im working on an online store project where I have already made it possible for an administrator to update different table entries via the store gui (like items, user profiles, orders etc). SaveChanges(); is used to save the changes.
Im currently trying to figure out how to make this work:
An entry in table "items" gets updated.
Before the entry in the table "items" gets updated, a copy of the old entry gets saved into a table named "history-items".
The copy that is saved to "history-items" preferably has a timestamp.
How would I go about doing this? (As you might tell, I just recently picked up visual studio, and am pretty new to everything)
Thank you.
There are atleast 3 ways to do this:
If you are using SQL Server 2008 or newer this is now built in functionality, see: http://msdn.microsoft.com/en-us/library/bb933994.aspx
If you opt not to use that then the simplest solution is to use database triggers.
If you want to do it in C# code, then you need to read the original values before saving, and save these original values to the history table. For reading original values see: How to get original values of an entity in Entity Framework?
I would go for option 1 if possible.
I have inhereted some project which uses Entity Framework in a way which makes it hard to make there any changes. It uses QueryViews for almost all tables (cca 50 tables) and of course stored procedures. Now I have to change there quite a lot of things ... rename tables, add tables, change columns etc.
When I tried to use the "Update Model from database ..." wizard, than after the update (where I added/removed the tables and let refresh the others using the wizard) from the database the Entity Data Model Designer rendering stops working ... there is just blank window with the text "The Entity Data Model Designer is unable to display the file you requested."
So I tried different approaches (like manually editing the edmx file), but the problem remains. The editor shows only the "The Entity Data Model Designer is unable to display the file you requested."
The mapping using QueryViews makes it probably more complicated. It is well known that the designer can not work with the QueryViews properly (one can not edit them using the designer) and the Entity framework engine even does not recognize that the columns from CSDL are mapped using the QueryViews and complains on each and every column (which is mapped using QueryView) that "Error 11009: Property 'XXX' is not mapped." I see exactly 100 errors like this. Maybe somewhere after the 100th error, there is some hint (in the form of other errors) how to fix the issue with Designer, but I don't know how to see them. The 100 limit is most likely hardcoded in VS2010 (http://stackoverflow.com/questions/2880936/how-to-increase-error-limit-in-visual-studio).
Btw. the code (classes for entities etc.) is generated without problems.
So, the question is:Is there a way how to see some log or something, where would be noted why the Entity framework Data Model Designer is not able to render anything?
Or is there at least some way how to see the rest of the errors (besides the 100 errors)?
Or does anybody know the ideal way of dealing with updating schema in EF besides using the wizard?
Try to add new EDMX and right click >> open with >> XML editor, then you can see a complete set in an empty model definition in EDMX. So you can compare the two EDMX and check notice which part of the EDMX is missing.
Here is the error link
In the end I have just do all the changes manually by editing the xml. However, I used the model designer (the GUI integrated in VS for EF) for creating the whole CSDL layer. So my approach was to carefully choose tables in the correct order and add them one by one in the multiple iterations of the following steps:
Use the model designer to create the csdl layer for the chosen table including all relations with already existing table. This at least ensured that the designer was usable later on and it saves the manual writing of the CSDL objetcs.
Write the SSDL layer, which should reflect the DB table.
Write the mapping layer (in my case using the QueryViews).
Try to compile and resolve all compile errors.
Repeat for next table (or more tables if you find it easier).
I hope this will help somebody.
It's apparently the week for unusual AX problems. I have custom, company-independent tables in AX that on first view always shows one particular record. This occurs if you access them from a form, view the tables directly, etc.
Open a form using one of the malfunctioning tables as a datasource and you only see one record.
Open a table directly (CTRL-O), and you only see that one record. However, if you hit the green arrow to re-execute the SQL query, the rest of the records appear.
I've tried dropping and reimporting the tables, adjusting the indices, deleting a variety of record combinations, but nothing has any effect. If I delete the one row that appears, another one replaces it as the one appearing record. Add that row back in (new RecId, same data) and that row resumes its original position.
I exported these tables from another system where they were working perfectly. I also imported the exact same structure to another instance on the same Dynamics server, and everything works perfectly.
Any suggestions?
Are you absolutely sure you're running the client on the same version as your application? Check to see if your Kernel version matches the Application.