Two Tables Produced From Data In Other Databases
Oct 25, 2010
I have an interesting project.I've been tasked to create utility in VB.Net. So far from what I can see, I will need two tables produced from data in other databases. The mockup was done in Access which has a unique way of treating all tables as local tables that can interact with one another without any serious side effects. Simply put, I can add three tables from three databases and create a relationship and query against them without any problems.I'm not allowed to write or create items on the Server, so I need to do everything within VB.NET. I've created a local MDF file that will be included in the project installation, but as I'm new to .Net. I'm not sure if this is the best practice.I was excited at the prospect that I might be able to avoid having an attached data source when I realized I could create a DataTable and call data from it. When the application shuts down, the table would disappear and the footprint would be virtually 0. But now rather than just selecting data from that table I need to now delete and insert data to the Datatable object based on AdHoc selections on the form.
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Jun 5, 2012
Can you perform a join on two tables, one is an Access database and the other is a SQL Server database.I understand that I could perform a SELECT on each database, and then manually join the results. Is this how I'm going to have to do it?
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Aug 27, 2010
I have two databases. I need to merge the data from a table in one database with the data in a table from another database. I created two datasets and two dataadapters, and two connection strings as below.
[Code]....
I just don't know how to put it all together, as I have two connections. I searched the internet for days looking for a sample, but couldn't find any.
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Apr 6, 2009
How do i do sorting for tables of different databases?
say i have 9 columns: Ticket No, Subject, Requester.In the tickets database, i have ID, Subject and tbl_StaffDataRequesterID. And, i have a tbl_staffData table whereby the name of the requester is stored inside.
My problem here is that i can do sorting for columns of the same database but i dont know how to do it for different databases, which in this case here is to sort the requester's name. [code]...
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May 22, 2012
I am tying to build a COMMAND that joins two tables from two different access databases in vb.net,
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Oct 26, 2011
I am looking for the proper code format to rename a table of an SQL file within VB.net.[code]...
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Jan 29, 2012
i wont to creat application, in wich with file location find tables and use them in my app. as databases
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Jul 25, 2012
I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
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Apr 30, 2011
Currently I have a list of items that are based off of a structure of information. I have been putting off the saving function of my program until near the end to make sure that I have all the elements before I start worry about what needed to be saved. I am not asking for code, more for direction. Is it possible that I can load and save data directly to a database rather than have to hold it all in memory as a list? I have never worked with databases in vb.net, and wonder if there are places that would help with this under the requirements I need.
My program saves recipes into a structured list. All the listboxes and forms use the list to populate the correct data on them. I know I could just save all the data each time the program ends into an XML file, and load it each time the program opens.... but is that the best way? Can it be done with a database without having to constantly save or load a file?
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Jun 6, 2011
I'm developing a project for gathering customer feedback using a Samsung Q1 Ultra, a cheap touchscreen PC. The project consists of two parts: a PC based application that builds the survey and stores the info on an SQL Server, and a survey viewer on the Samsung device which downloads survey data from the SQL Server and stores it on a SQL Server Compact 3.5 database.
My question is, how best can I transfer survey data from the SQL Server to the handheld device's database? Writing a tonne of code to copy data from one database to another seems overcomplicated - is there a handy function or somesuch that I can use to copy data from identical tables on these two separate databases?
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Feb 5, 2009
I collect two sets of data from two different databases, This data is now in two collections. I then join/append the one collection to the other and then put it in to a list view.I really would like to order this list view by the first column without the click event.To make this even harder the First column contains Data that is DateTime and i have found that it orders the items by the day number and not the months or years or time.I have found one way but it then cause's me further agony when doing some checks upon the data within the listview later in my code. This answer is to rearrange the format to "yyyy-MM-dd HH:mm:SS" then using the listview.sorting = sortorder.
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May 22, 2009
Does anyone know how to, or if it is even possible, to add data from two different databases into one datagridview? For instance, the following is my code for one source of data, pulling from Access.
[Code]...
PartNumber from the first dataset and ItemNumber from the second are supposed to be alike. What I need in my datagridview is all the info from the first dataset and then for each row I need the description from the second dataset, based on the PartNumber that is listed for that row.
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Apr 20, 2009
I need to get data from 2 databases namely cable and History. The results obtained from it will be display in a datagridview. MyCommand is a sql statement i wrote. However,i have errors in it. The codes are as followed.
Dim dbset As New DataSet
Dim data As New OleDbDataAdapter
data = New OleDbDataAdapter(MyCommand)
[code]....
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Sep 21, 2011
I'm doing a little project on the side and was wondering if it was possible to enter data from text boxes on a vb form into two different tables in the same database? [code]
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Oct 27, 2011
I have used two database (1) party (2)partydup.[code]In both tables i have common field ("code"). I tried to retrieve the value of "description" field from partydup table when the "code" field in both the tables are same. I run the below coding but it is showing the error as "No data exists for the row/column". But i have a record which contains the code field value as 123 in both the tables. Still it is showing the error. Please let me know what is the mistake i have done.[code]
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Jan 24, 2012
I am rewriting a program I originally did in MS Access. In this program I pull a table from the company's AS400 iSystems, it is filtered by data that I have in an Access Table. In Access, I first link both tables to the source and then just create a Query as if both tables were local. Now that I am using .Net, the second table is in SQL Server 2008.
SELECT LPROD
FROM ITEMS
WHERE EXISTS(
[code].....
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Nov 12, 2009
I am in the process in developing a new version of my software. I have changed my design of my database slightly (added a few new tables and new fields to existing tables). The issue is that my users have user data in the old Db that I would like to transfer to the new Db. Both Db's are access 2003. Because my software is distributed over a wide geographical are it would not be possible to do this manually
I have appended data between two different tables in a single Db, but not between two separate Db's.
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Sep 22, 2010
I want to store Usernames/Passwords in a Database/Data Connection...eg. A login.
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Sep 25, 2009
I have a form in my MVC application that in theory should submit data back to my database using a Repository class. However, when I submit the form ([URL]), the URL changes to where the form should be submitting to, which is fine ([URL]), but once it has been submitted, it should send the user to a confirmation page. From what I can tell, I'm moving through all my pages correctly until it comes to the submit, where it displays the form again but under /Admin/NewUser/Submit and the data is not inserted into the database.
[Code]....
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Dec 15, 2009
I am having problems deploying VB-created software from a website. What is the best way to do this? Should I create a .zip file for the 4 files produced by VB?
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Aug 4, 2006
I would like to import the excel in to the sql server using vb.net. how can i do it? Another question is how can i execute the DTS using vb.net
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Jun 9, 2011
I have started making applications that retrieve data from sql databases.
I write the database with Sql management studio then apply that database to my applicaton.
My question is, how can I make my applications more secure against hackers. Some applications store user names and passwords and personal information / finantial information and so on.
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Sep 29, 2010
I developed a program using Vb.Net that is data based enabled, it has a field for serial number etc. its working fine but the serial number failed to update when a record is deleted, its always keeps tracks of its formal numbering, even when the program is restarted, unless reinstalled.How do i also backup the data stored in such program.
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Dec 7, 2007
Our company is engaged in producing asphalt. Asphalt is produced and trucked to the job site. At job site the asphalt is consumed. We need to be able to compare tonnage that have been produced at the plant to tonnage that has been consumed at the job. We need to do this by date and job number.
1. Asphalt plants (8 of them) run on Advantage data base. Each plant has its own data base containing a SalesTicket table that contains asphalt produced.
2. Job site runs on sequel server and consumption is recorded daily wireless
3. User will be able to compare tonnage produced (at plant) and tonnage consumed at job. There could be the case that tonnage is produced and never consumed or tonnage been consumed with no record of being produced.
4. User will be able to view tonnage by date and job and selecting data from one or more plants.
5. If user selects more than one plant I need to connect remotely to multiple plants like connect to plant A, execute query, store result somewhere, connect to plant B, execute query, store result somewhere, when done consolidate results from all plants selected .....
6.The finished display (datagridview) should be something like this:
Date | Job | Asphalt Produced | Job Consumed
So, how can I best consolidate all the information from plants and compare to whats been consumed at the jobs? I tried to use temp table in a sp but that does not work since I call the sp ecah time I qyery a new plant. I need to be able, somehow, to build a table with all the plant information consolidated and then compare to job information.
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Mar 2, 2010
I'm creating some software in visual basic 2005 .Net. My software keeps a log file. If the applications encounters an error, it writes to this log file. Is there a way I can easily produce what sub, function, or block of code that produced the error?
Example:
Sub MessageUser()
Try
msbox("Hello")
[code]....
Since msgbox is spelled incorrectly this will produce an error. I want to know what sub caused the error, in this case MessageUser.
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Feb 27, 2012
I have two MS Access database; Mydb1 and Mydb2. I would like to do the following:
1. Copy all records in table (MyTable1) from Mydb1 to Mydb2. MyTable1 also exists in Mydb2
2. Move all records in table (MyTable2) from Mydb1 to Mydb2. MyTable2 also exists in Mydb2 which needs to be flushed.
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Apr 20, 2012
I there a way to set up my DataTable so a field (or all fields can allow nulls if you can't set just 1 field) so oIDbDataAdapter.Fill won't leave out DataRows where a field contains a null value?
Dim oSqlCommand As SqlClient.SqlCommand
Dim oIDbDataAdapter As System.Data.IDbDataAdapter
oSqlCommand = New System.Data.SqlClient.SqlCommand( _
[Code]....
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Apr 29, 2010
I am putting together two programs... basically one to enter data into a sql server 2000 database, and one to view the entered data and modify some fields. The data-entry part works well, but the second part is giving me some problems.ince the second part should really be a simple program, I created a DataGridView of my sql server table via drag&drop (just pulled the table from the data sources). Now I need to save back any changes to the DB. The part giving me problems is the OleDBCommandBuilder:
cBuilder = New OleDbCommandBuilder(FteuStoerungsmeldungAuftragTableAdapter)
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Aug 11, 2007
Ok, most of my Visual Basic experience I admit was with VB 3 and VB 5. I'm just starting with VB 2005 Express, and get this error when trying to connect to a new database.
I'm using Windows Vista and have the latest Microsoft JET version, so I have no idea why I'm getting that error.
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Sep 28, 2009
I would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it?
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