I made a basic program that connects and gets content from a table via SQL, it's working normally. What I want is; when connection losts via SQL Server or internet connection, it must continue to list items that it got before connection losts instead of giving "Connection Problem Error".[code]...
View 2 RepliesMsgBox(Session("fllog_ref"))
Dim query As String = "SELECT customer_name FROM tblFixedLine_order_summary WHERE fllog_ref=@fllog_ref"
[code]....
Question:Using VB.NET/C#, is it really not possible to read the below XML in a dataset without significant work ? I tried
oDataSet.ReadXml(strFileName)<BR>and
Dim oDataSet As System.Data.DataSet = New System.Data.DataSet
Dim strLocation As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
strLocation += System.IO.Path.DirectorySeparatorChar + "filename.xml"
oDataSet.ReadXml(strLocation)
But all this is doing is putting ONE row with one cell with content "2010-02-12T10:33:39" in my dataset.
[Code]...
this piece of code works fine....
Private Sub save()
Dim con As New SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Chuttu VBProjectsLICLIC.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True")[code]......
NOTE: I get no errors.
I have two connection strings coded and in their different contexts, they both work in VB.Net 2008. However, the third connection string will not work if it has the extra ;HDR=Yes;IMEX=1 so I wonder why. Is it perhaps the words 'Extended Properties' in the third example that makes it fail?
[Code]....
linq querying various nested tables in a dataset? I can't find something like that on the net.
View 1 RepliesI' newbie and i dont understand why this won't work TableName is String "Tab"DataGridMain is name of DataGridView.[code]
View 5 RepliesOn the server side of my application I have a function like this:
public function GetDS as MyTypedDS
Dim dsRetVal as new MyTypedDS
'Make fantastic things with the dataset
return dsRetVal
end function
On the client side I call this function through a generated "service reference":
Dim ds as Reference1.MyTypedDS = myRefInst.GetDS
How can I disable schema serializaion of the typed dataset to reduce the traffic?Is it enough to set the SchemaSerializationMode of 'dsRetVal' to ExcludeSchema before returning it? Or is this option ignored by WCF?
I have created many datasetsets in many projects in a solution. In each case the datatables reference a named data conection such as laptop_rick.intPricing.dbo. In that connection I point to the server, etc.. I should point out that in the code I connect to an entire different db server and this is all setup at runtime, this is strictly an IDE issue. Now I have moved the development server. Now of course when they try to connect to the server during development of the datasets it complains that it can't find the server. No problem just open the defined data connection and change the server name.
The problem is that I can't seem to get the dataset to recognize that it needs to rebuild that information in the xsd file. I look in the file and there are still references to the old server. If I change the connection definition in the xsd and rebuild all is fine but I don;t want to have to do that for each every dataset. It seems that although the dataset recognizes the name of the named data connection instead looking for that it embeds the details of the connection into the dataset xsd file.
I am developing a software that will be installed on 3 servers using sql server 2005 + replication.
In my development I want to use sql server with dataset.
When I finish the project at my development machine, I want the ability to install it at these 3 servers.
What is the best way to configure the connection?
Can I change the connection string created by the wizard during run time?
I have a connection string for my SQL database connection called my.settings.GCRConnectionString which was created when I created my dataset for the application. I want to change the value of the connection string but it give me an error saying it is ready only. Is there a way to update my connection string during the run-time?
View 4 RepliesI opened vs 2008 and used the server explorer for the first time to create a connection to my SQL 2005 db. The solution explorer pulled in all the tables, the database diagram etc. My question is how do I access that database connection and work with it using ADO objects? Do I need a reference to ADO?
View 4 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 RepliesHow do I close a connection of strongly typed dataset? I want to backup my database with a zip technique. But I can't access it when my program is open. I've closed connections of all table adapters but it didn't work.
View 14 RepliesI want to create a dataset.xsd in vs2005, and I am using access database, so I cant know where my client save the application. Hence I used application.startuppath() to get the application folder and appended "Datadb.msd" to the application.startuppath() so i got the target location for the access databse in client machine. Now to create crystal reports I need the dataset.xsd but while creating a new dataset.xsd it was asking the path for the access database, how to programmatically specify the connection string in dataset.xsd so that i can create a connection string. and use that dataset for creating crystal reports.
View 2 RepliesI have an existing project written in VB.NET using Visual Studio 2005 communicating to a SQL Server 2005 database. The database was migrated to a sql server 2008 r2 on a different physical server so the dataset's server name needs to be updated. I do not have access to the database anymore. is there a way to just update the server name without invoking the dataset wizard and requiring a connection to the database?
UPDATE: I tried to created a new project with just a button with the command calling the following subroutine to test the connection from a windows app to the sql server database. here is the sub:
Public Conn as New ADODB.Connection
Public Sub PubSubConnectToDB()
Conn.Open("Server=w2k54
[Code]....
I am able to created a system dsn on the same server with the same credentials and test the connection successfully.
I have a dataset that I created through the wizard, to pull the data and their types from the database tables and prevent some of the headaches of creating the tables and data types individually.I am looking for where the database connection for the dataset is defined at so I can change this. The reason being is I have added a database connection dialog where the user will select the location of the database server and I am wanting to pass the connection string from what the user selects to the dataset so the dataset uses this as its connection string instead of the default one I defined in the wizard.Where is this defined at so I can change it?
View 6 RepliesI use ODBC connection for my application (controlpanel -> administrativetools -> odbc -> DSN) to sql server 2008, and windows authentication
it works perfect on windows xp,but now I run it on windows7 and sql server 2008 with sql server authentication.when I make the DSN and query the connection its ok and I got this message (TESTS COMPLETED SUCCESSFULLY!)but when I run the application I got this error (ERROR [28000] [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user ''. ERROR [28000] [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user ''.) I think a little more and I found that Maybe my password doesn't save for my user, when I make that DSN?
I have a problem with Oledb connection when I am trying to open an Excel spreadsheet:
[code]...
This piece of code works well on one computer, but on another the IMEX=1 doesn't seem to work, and the Jet seems to read the first few rows of the Excel spreadsheet that are numeric and decides that the whole spreadsheet is numeric, so it ignores some String values later in the sheet.
I have a vb.net 2010 windows forms application with a strongly typed dataset. I am storing the database connection path in a txt file so that the database's location may be changed in the future for whatever reason. The typical location of the connection is the read only app.config from what I gather. I have the datasets modifier set as public but I am having trouble finding how to access the connection object for the adapter.
View 5 RepliesI'm sorry but Microsoft did not think about this very well. I have used the dataset wizard to connect to my sql server and the connection string was placed in the app.config file. The only problem with this is that you can not write to it nor change string at runtime. So I need a way for each one of my users to specify their connection either during installation or after installation. I would appreciate any help in this matter.
View 14 RepliesI made an application that was used by one person only, but now my boss told me that this application it'll be used by all company.I made the application with a dataset that have the datasource in a access database that's installed with the application. The user can add, delete and change values in the database, so i had to put the database in a sql server to everyone see the changes.There's someway to change the dataset datasource/connection string?
View 9 RepliesWinfom, intellsense remind me configurationManager wrong.This code is from asp.net, how can I change it?
unction GetData(ByVal queryString As String) As DataSet
' Retrieve the connection string stored in the Web.config file.
Dim connectionString As String =
[code]......
I need to be able to change the connection string of a strongly typed dataset at runtime. I have gone into the settings.vb page and written this code:
Namespace
My
'This class allows you to handle specific events on the settings class:
' The SettingChanging event is raised before a setting's value is changed.
' The PropertyChanged event is raised after a setting's value is changed.
' The SettingsLoaded event is raised after the setting values are loaded.
' The SettingsSaving event is raised before the setting values are saved.
[Code] .....
The way the code is suppose to work is that when a user logs in, the application gets the user's site ID (gvUserSite), then uses that to set the connection string. But when I log on with a SiteID of "21" it always uses the Case Else value. Also when I set breakpoints in settings.vb the application never stops on the breakpoints I set during runtime. As if the breakpoints were never set. Also if I put any code in the "MySettings_SettingChanging" in settings.vb I get a runtime error
"The debugger cannot continue running the process. Process was terminated.
I'm creating a tool that will query Excel and intialize the default settings for the site's Cad Software.I want 2-20 users to be able to simultaneously query excel. Currently I have the spreadsheet open on one computer and the other test machine gives me this error.
GetOleDbSchema Table Require an open and available connection. The connections state is closed.
I could use some help on the code design. Should I use Datareader instead....Does that have less permissions issues? Or do I need to open up the oledbconnection in a different manner?
Private Const cPageData = "PageData"
Private Const cPrinterData = "PrinterData"
Private Const cSupportData = "SupportData"
Private Const cUserData = "UserData"
i can connect to only one Data Base with dataset in Visual Basic . but i want Have Dynamic connection to data base i mean in want to my appliction users have ablity to connect to any data base they want (For Example : Choose file from menu and then open and then Select any Data base.)
View 4 RepliesI 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 RepliesHow do I assign a My.Settings.Item connection string to cmd.Connection connection string value?
Dim cmd As New SqlCommand()
cmd.Connection = My.Settings.Item("csStaffHoursWorked")
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "spSaveDeltekImport"
I found that when group by multiple values does not work well with VB.NET, but it works well with C# ,here are my code, is there something wrong with my VB.NET Code? Here is my VB.NET code:
[Code]...
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.