I have an Access database was created, it's working perfectly. After successfully splitting the database to back and front end I shared the _be file in shared drive and front end file in my local, I tried to run the front end and I am getting error when macro is executing:
I even put the back and front end in my local machine but still I am getting the error, I tried to remove the macros but still getting errors since I am not the one developed this application.
Dim fdb As Database
Dim utab As Table, otab As Table
DBEngine.SystemDB = "System.mdw"
Set fdb = CurrentDb()
Set utab = fdb.OpenTable("Users")
Set otab = fdb.OpenTable("Organization")
After tracing the function findorg() I found this error
Item not found in the collection
For this line
Set utab = fdb.OpenTable("Users")
I tried to change the code to be
Set utab = fdb.Rescordsets("Users")
But still I am getting the same error.
Note that I am using back and front end, I have all my tables linked.
"Users" table is not linked in the database in which you are running this code. Link it again and check, check for all tables that should also be linked.
i was able to solve the issue by using DAO 3.6 object library, as i found that the current database application is using DAO 2.5, so i recompiled the application and fixed all errors. also i managed to rename the functions that's been called by macro, i found that in macro when i write calling function as findorg() will not work, but in function name i specify "findorg" between double quote, which run successfully.
Related
I am developing application with vb.net (2015) and MS Access database. I can work fine with existing database. I have now situation where I need to create database programmatically, for billing purpose. It is the situation where each folder will contain database for company/firm selection.
After searching on the internet / StackOverflow I learned about ADOX. Even got the ready code for it. I applied it in my coding.
Adding reference of Microsoft ADO extend 2.8 and 6.0
Created variable Adx as new Adox.catalog
Then finally wrote Adx.create(olejet provider conn string with data source)
In this step I get an error
COM Class not registered
So I tried to register msadox.dll and msadox28.tlb with regsvr32 and regasm but at that time I get another error:
msadox.dll get registered successfully but error gives in msadox28.tlb
Fail to load -file- becuase it is not a valid .net assembly file
Now I am stuck at this point.
My system is Windows 10 64 bit. I tried to target cpu x86, and any cpu but it didn't work. I got many questions and answer here but didn't understand it.
EDIT:
I tried following connection string and it worked, but it creates old 2000-2003 mdb file. i want to use new access file .accdb
String is :
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\VBProj\Testing\test.mdb;Jet OLEDB:Engine Type=5
EDIT : on 20/9/2021 - MON
First of all Thank you very much #Jimi, your suggestion to use ACE.16 and cleaning solution worked. Thanks a lot
I use the following steps to create MS Access database using ADOX in VB.NET:
Project Menu > Add Reference > COM Section > Select Microsoft ADO Ext. 6.0 for DLL and security
Write connection string at program entry point (form load/sub main) -> Provider=Microsoft.ACE.OLEDB.16.0;Data Source=D:\VBProj\Testing\test.accdb, assign it to variable connString
Declare adox catalog globally like Public gAdxCat As New ADOX.Catalog
Use its method gAdxCat.create(connString)
That's all - DONE
Again thanks to #jimi
This is the answer to my question (helped by #jimi)
following are the steps to create msaccess database using ADOX in VB.NET and error occurs mention in original questions.
1-Project Menu > Add Reference > COM Section > Select Microsoft ADO Ext. 6.0 for DLL and security (remove ref of 2.8)
2-write connection string at program entry point (form load/sub main) -> "Provider=Microsoft.ACE.OLEDB.16.0;Data Source=D:\VBProj\Testing\test.accdb" assign it to variable connString
3-declare adox catalog globally like Public gAdxCat As New ADOX.Catalog
4-User its method gAdxCat.create(connString)
5-Thats all DONE
again thanks to #jimi
I've been stuck on this issue for some time now, i have connected to to an Azure database then created a dataset by adding a new data source.
But whenever i try to preview the data in one of the tables this error messeges
Could not get type information for app.dataset
The error message pops up whenever that dataset is created, and this error message pops up when i run this code
var q = (from ev in db.Events
where ev.Id != 0
select ev.Title).First().ToString();
string e = q;
tv.Text = e;
Sequence contains no elements
Any help is appreciated
I had the same kind of problem with Visual Studio 15 and a regular SQL server. The Connection string was stored in my settings file. I had copied the file from another project and made small adjustments to it.
Deleting the copied settings file and creating a fresh one solved the problem. Apparently some incorrect data was copied also, even tho the settings file looked just fine.
I'm trying to create a connection to an Interbase ToGo database, at runtime, in a unit that does not have a form.
MyConnection := TSQLConnection.Create(nil);
strTestPath := TPath.Combine(TPath.GetDocumentsPath, 'ISHMAEL.GDB');
MyConnection.Params.Add('Database=' + strTestPath);
MyConnection.DriverName := 'IBToGo';
MyConnection.Params.Add('User_Name=SYSDBA');
MyConnection.Params.Add('Password=masterkey');
MyConnection.Open();
Everything seems fine as I step through, until I try and open the connection. The open raises an I/O error, saying that database.gdb isn't found. I called the database ISHMAEL, so is something else happening, or is the error message misleading?
Ideally, I'd like to get all of my database calls (and really, most if not all of the business logic) out of the forms and into some data access and business object units, but am having difficulty finding examples.
All of the examples and tutorials I have found focus on dropping controls on a form, and using visual live bindings.
Can this be done inside a non-form unit?
Thanks!
We noticed a slight oddity in the Sitecore API code. The code is below for your reference. The code is trying to get a database by doing new Database(database). But randomly it was failing.
This code worked for a while with Database db = new Database(database); but started failing randomly yesterday. When we changed the code to Database db = Database.GetDatabase(database);, the code started working again. What is the difference between the two approaches and what is recommended by Sitecore?
I've seen this happen twice now - multiple times in production and a couple of times in my development environment.
public static void DeleteItem(string id, stringdatabase)
{
//get the database
Database db = new Database(database);
//get the item
item = db.GetItem(new ID(id));
if (item != null)
{
using(new Sitecore.SecurityModel.SecurityDisabler())|
{
//delete the item
item.Delete();
}
}
}
A common way you will see people get a specific database is:
Sitecore.Data.Database master = Sitecore.Configuration.Factory.GetDatabase("master");
This is equivalent to Sitecore.Data.Database.GetDatabase("master").
When you call either of these methods it will first check the cache for the database. If not found it will build up the database with all of the configuration values within the config file via reflection. Once the database is created it will be placed in the cache for future use.
When you use the constructor on the database it is simply creating a rather empty database object. I am rather suprised to hear it was working at all when you used this method.
The proper approach to get a specific database would be to use:
Sitecore.Configuration.Factory.GetDatabase("master");
// or
Sitecore.Data.Database.GetDatabase("master");
If you are looking to get the database used with the current request (aka context database) you can use Sitecore.Context.Database. You can also use Sitecore.Context.ContentDatabase.
I had a connection string to a MS Access DB file, Foo.accdb, defined and used in my project. It was defined as a connection string Setting in the Settings section of my project properties. The program referenced the connection string setting and everything worked fine.
Then I decided to replace Foo.accdb with two different DB files, A.accdb and B.accdb each of which would be used under different circumstances. I added connection strings for them in Settings and removed the Setting definition for Foo.accdb connection string.
The name of my application is Foo and the name of the Foo.accdb connection string was FooConnectionString.
But now when I build the program both in debugger and for release I get the following error message:
'FooConnectionString' is not a member of 'Foo.My.MySettings'.
The offending reference, in file FooDataSet.Designer.vb, is:
<Global.System.Diagnostics.DebuggerNonUserCodeAttribute()> _
Private Sub InitConnection()
Me._connection = New Global.System.Data.OleDb.OleDbConnection
Me._connection.ConnectionString = Global.Foo.My.MySettings.Default.FooConnectionString
End Sub
What is going on here? FooConnectionString is not in any other file in the project directory nor in the My Project subdir. I completely got rid of it in my code and in my project properties yet it persists in FooDataSet.Designer.vb (whatever that is).
While researching this on the web I saw a recommendation to select the FooDataSet.xsd file, right click it and execute the "Run Custom Tool" option. I did this and it appears to rebuild FooDataSet.Designer.vb (the time stamp changes) but the problem persists.
I also tried removing the offending reference by manually editing FooDataSet.Designer.vb but that gave me some other error message.
Why is this old reference staying around and what can I do about it?
This is a standalone app. I'm using VS2008 Standard Ed., VB.Net 3.5
Thanks.
Open the FooDataSet XSD file in a text editor. Right click on dataset in the solution explorer and select "Open With..." and the select XML (text) Editor or open it outside the solution.
Look for the <Connections> tag near the top of the file. Remove the line that looks like this
<Connection AppSettingsObjectName="Settings" AppSettingsPropertyName="FooConnectionString" ConnectionStringObject="" IsAppSettingsProperty="true" Modifier="Assembly" Name="FooConnectionString(Settings)" ...