i am using VS 2008 and i am following this walkthourgh in VS2003[URL]..in the part "To create a database connection and a dataadapter",say this 10 Drag these fields from Server Explorer onto the design surface.
Where is the design surface? if it is the place where i can drag and drop controls, i can not drag and drop fields of a table, how can i do it?
After running the following sub (VS debugger), I try to detach the database in SSMS, but it shows the connection open still and won't let me detach. If I close program in debugger, the database shows no connections. I check the dataadapter's connection in the finally block and is shows closed. What gives
Private Function ClientMasterDBFiles(ByVal MasterClientDBConnection As String, ByVal DBName As String) As DataTable
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I have produced an application which works with datasets but I now wish to provide the user the ability to add and admend records within the database.But i wish to do this in a seperate form.My current dataset instanciates classes onLoad.Should i try passing the Dataset to the new form class? although I have the problem where by when i pass the dataset to the form class using code below i get this problem:[code]Should i just create a create a new connection to the database and produce a new dataset for this form? or is there a better way to do this?
View 2 RepliesI have an application with a number of forms that basically access the same data (or subsets of it)Can the data adapter, connection object etc be opened in a module so that all the forms have access to them to avoid writing the same code in each form?I had a go at doing this but they seemed not visible to the form?
View 8 RepliesI wrote a small application in witch I create a connection to a database. I'm new to this, so I followed the steps in MSDN help. I first created a link to the database with the "Datasource" of the Visual Studio environement. Then, in the code, I create instances of the dataset in the datasource and use a tableAdapter to register my changes in the database.
Now I want to allow the user of the application to specify the path of the DB file he wants to use. How can I do so? Do I still can use the datasource in the VS environment? I don't know where to start.
im sure that there are plenty of people here that have the same problem as me, but i cant seem to find a forum that explains this to me. well basically i have a program i am creating to use as a phone list, but to save data to a database on a mapped hard drive. I want to give the user the option to set the path of the database just by typing it into a textbox. The database will be supplied with the program, with all appropriate tables, i just really would like to know how to set up a connection to a database using code, and to be able to display it into a datagrid veiw. I know this seems simple to you guys,and i am really sorry, i am just new at this.
and also if u could, could u describe to me how to make it search through the database for like certain names/numbers?
I have this code of sending sms but i dunno know how to make the connection for the below code to run my program.
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Okay i have been looking around for some tutorials on databinding by code but all the ones i find use vb's built in function to create the connection to the database and then the binding but i need to do it manually. I am totally new to databinding as in i only learned about it from a previouse thread and have been fiddling since.
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So im kind of going blind here, i dont know whats going wrong or if im even using the correct dim statment for the binding,
I installed SQLExpress 2008 on my computer this afternoon and have been trying to create a new database and open a connection to it. I found this code online and tried it:
Dim
conStr As
String =
"Server=MSSMLBIZ;Database=;Trusted_Connection = yes"
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I have Visual Basic 2010 Express and SQL Server 2008 R2 (not Express) installed on my Windows 7 machine. In Visual Studio, I am attempting to create a Data Connection to a database in SQL server. Server Mgmt Studio is not running. When I attempt to add a connection in Database Explorer, to the AdventureWorks _Data database, I get the message "This file is in use. Enter an new name or close the file that's open in another program." There are no programs running except VB, except maybe for the SQL Server engine running the background.Please note that I can open and access tables within a database in code
within Visual Studio, I just can't add a connection in Database Explorer.Am I doing something wrong? I've been very frustrated on this issue for a long time
friends i m a newer for dotnet...and i m a student i m creating a project with a simple database connection
i need to make a setup of that project but whenever i create a set up it wont connect with my database
it'll shows a error how to make a setup in vb.net with a project with a database connection
how i can create a connection to a database when i open my program and then close that connection when the program closes, so that the user has a permanent connection while the program is running that can be used for multiple things depending on what the user decides to do.
View 5 RepliesI basically want to make this in my application, so our technicians have an easier time installing our software. So far, I made a form with 4 text boxes: Server name, user name, password, and a combo-box to select a database.Everything was pretty easy until the database selection code. Microsoft's wizard is very efficient, there's no wait time when the database combo box is being filled.[code]That code gets the databases just fine, but obviously if an exception happens the whole screen locks up and it might take a while to recover depending on what the database error is. My question is, can I make mine just as cool/efficient as Microsoft's?
View 1 RepliesI am trying to build a user control that will do exactly what the SQL 2005 Connect to Server interface do, eventually create a connection string and store in a app.config file. It should allow user to select server type, server name, authentication, user name and password. It should also automatically load available servers and domain login by default.
View 11 RepliesI am using VB 2008 Express and have created an application that connects to a SQL database to populate a datagrid.The application is working properly on my computer but will not on others 'remote connection permissions' error.After some googleing I found that the express version is crippled to only work on local machines that use a database.If I purchase Visual Studio 2008 Standard Edition, import and rebuild my application, will my application be able to run properly on other PC's?
View 7 RepliesHow to insert data into access database using dataadapter?
View 1 RepliesI've taken over a winforms project (attached to a SQL Server database) that needs to completed quickly so am trying to work with what the other developer has rather than rewriting it all. He has an admin form with a listview and a datagridview. The idea is to allow a user to edit the lookup tables for the database (customer type, product list, etc). When the form is loaded, the listview is populated (hard-coded) with a list of available tables. Clicking on a table name fills the datagridview with the contents of the table. What he left incomplete was the updating of the database if the user makes updates/inserts to a table.Now, I know that normally you would just call the Update method of the dataadapter, but he passes all his database calls for the entire project through a helper class that will execute parameterized sql queries (for updates/inserts), or return a bindingsource object for displaying data. But this helper class does not expose the underlaying dataadapter.
To populate the datagridview, he uses the following code in the ListBox1_SelectedIndexChanged event:
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As
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The rest of the app deals with only one record at a time, so when an update is needed, he scrapes the data from the form, builds a parameter array and passes the array and the name of the stored proceedure that handles the update to a method of his helper class called .InsUpDel - which is simply another wrapper that builds a parameterized query, executes the passed stored proceedure and returns the success/fail state of update.But, since this part of the app deals with an entire table rather than just one record, that method doesn't work. So, back to my question: How can I update the database when a change is made to datagridview when all I have is the bindingsource?
I did this simple insertion
Data is inserted when i do this:
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why is the DataDirectory part not working?
I'm having some trouble updating changes I made to a datatable via a dataadapter. I am getting "Concurrency violation: the UpdateCommand affected 0 of 10 rows"
'Get data
Dim Docs_DistributedTable As New DataTable("Docs_Distributed")
Dim sql = "SELECT DISTINCT CompanyID, SortKey, OutputFileID, SequenceNo, DeliveredDate,
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I have a problem with access database in my vb project. I would like to fill the listbox with objects from my database. I've attached two images. In first image when i'm using command objDataAdapter.Fill(mydataset....) i can select table property(zaposlen). But in second image or in my second app i dont have an option to select table property in my dataset(there is nothing to select). If i select DataTableDataTable i get next error: DataTableDataTable' is a type in 'WindowsApplication1.baza_podatkovDataSet' and cannot be used as an expression.
View 2 RepliesAny tutorial and maybe a sample project that can be downloaded that shows how to update a database such as MS Access from DataAdapter commands in which changes are made in a DataGridView? For example, the DataAdapter contains 2 tables called FirstTable and the other table would be called SecondTable. The DataGridView is based on a query that shows rows from both tables. The actual table that contains the rows to be changed, inserted or deleted is FirstTable.
View 6 Repliesi am trying to update database with updated data in data adapter. here is error message. "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." here is my code.i get this error when i try to update dataadapter with following line.
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1. Can someone show me sample codes on how to do that ?
2. I encountered a problem with the INSERT sql statement. I keep receiving syntax error in insert statement exception. Is there anything wrong with the statement ?
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Is there a way to display the connection properties dialog for connection string browsing(for database) in run time?
As I want the user to be able to connect to various database using the GUI.
Dim WithEvents backgroundWorker1 As New BackgroundWorker
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I want to use a backgroundworker to create part of an interface. In particular i want to open a page and as soon as the page is open a new thread should start to create a stack panel with many elements inside( lets say labels) when the thread has finished to do its work this stack panel should be added open page Is this possible?
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I Want to develop a software like Yed.i just don know where to start.how we can create a workspace where i can drag and drop icons and create connection etc etc.
View 6 RepliesI would like to create a sub menu that list part numbers that are gathered from a xml file. I am having trouble with creating the sub routines for the part numbers menus because it can change.
Private Sub mnuP1Layers_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim BFFile as string
My.Computer.FileSystem.MoveFile(BFFile, "C:ExchangePrintedBFFile")
I am using the following code to set a parameter in my report.
Code:
However, if I create the parameter at design time, it seems like I should be able to do something much simpler like
Code:
Since the parameter is already created. However, I can't get anything like that to work.
What I want to do is be able to active a query for my datagrid by clicking on a button. How would I do that? Would I create the query as part of my tableadapter???
View 4 Repliesi am using access database for my program. now i have connected to the database in MDI form of main exe, and ir also works, user can log in, it gets verified etc etc etc. now here is the problem, when i load a form from dll and try to use any sql query on that form, i get message, "database connection is not opened". so what i did was, i added the connect() (a function i designed to connect to database) in the load part of the dll's form, it made the trick, query's started to run, everything went fine, and when i reload the form i.e after closing the form, i load it again from MDI form, i get error, connection already open..
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