How To Backup My Database Using Visual Basic Express 2008
Mar 28, 2008
I have an application written with Visual Basic Express 2008, which has a Sql Server Express Compact database incorporated into the application. I've been trying to follow the suggestions listed on several threads on how to backup up my database and have not gotten very far. The following code seems to be in most threads.
Dim dbstring = "Data Source=.SQLExpress;Integrated Security=true;User Instance=true;AttachDBFilename=|DataDirectory|ImmuLogDataBase.sdf"
Dim sqlconn As New SqlClient.SqlConnection(dbstring)
sqlconn.Open()
When run, this code returns the following error at the sqlconn.Open() command.
An attempt to attach an auto-named database for file G:ImmuLogImmuLoginDebugImmuLogDataBase.sdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
My solution is saved on a flash drive which I take between home and work. I'm hoping that that isn't the issue. I believe that Visual Basic loads the database when it starts and it is already open when this code is run. Is there a way to access this open database and run a backup procedure on it from within VB express 2008?
I'm new to this and self taught so explain everything in detail. Thanks for your help.
Bruce
I watched and followed the Intro to VB 2008 Express, but in the final part of the video, when you add a database, i did everything as the video says, still i get:
An error occurred creating the form. See Exception.InnerException for details. The error is: Unable to load DLL 'sqlceme35.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
Ive tried the fix stated in another forum, the one about changing the "Target CPU" but the option doesn appear, what does appear its the "Platfrom" dropdown list, but its fixed to "Any CPU" and dont have any more options.
Ive also downloaded Microsoft SQL Server Compact 3.5 ENU and "re-installed" and selected repair, followed the steps, rebooted and still nothing.
I am new to this type of programming and and have read all articles on adding an image to the database and it seems they all use sql queries to add an image but I want to add an image at design time. I am using Visual Basic 2005. I am also using Visual Basic 2005 Express Edition to try the same thing. I am trying to build a Translator program for english to Brazilian Portuguese and the reason I want to add the images is so that when I translate the word cat from english to Portuguese, I can also show an image of a cat. Can anyone please help me
Hi, i am new to sql server and visual basic, i need to connect my sql server database to a new application i've developed in visual basic 2005 express. Can any one tell me the steps to do this. Many Thanks.
When I start Management Studio I get the following message and a suggestion to change a setting: (I can choose to continue and the system databases appear, but the DB I created does not.) "Unhandled exception has occurred in a component in your application. Cannot create a stable subkey under a volitile parent key."
************** JIT Debugging ************** To enable just-in-time (JIT) debugging, the .config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled. For example: <configuration> <system.windows.forms jitDebugging="true" /> </configuration> When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box. Any assistance is appreciated.
Hi all, I have a var called sEP which contains a number. The problem I have is calling that var during an SQL query within Visual Basic. To test the update string I wrote the following query and simply told it to enter the text "Five Stars" on the row which contains the entry '1' in Episode Number column. It works fine. UPDATE JackBennySET Rating= 'Five Stars' WHERE ([Episode Number]= '1') But how do I replace the '1' in the query with the var sEP (which will contain the actual number I want the query to run against)?I have tried various suggestions from sources including:UPDATE JackBenny SET Rating = 'Five Stars' WHERE [Episode Number] = '" + sEp + "'However, they all fail to update the database at all which makes me think the syntax is incorrect.Any help is very appreciated (I have been seeking help in various places for 2 days now) - I always send small paypal tips to people who help me on forums.
yiotis writes "Is there a way where you can programmatically (via visual basic) replicate two or more SQL Express databases located on multiple computers without the need of SQL Server 2005 acting as a publisher. From what i understand this is a limitation in SQL Express.
Right now i have SQL Express installed on 2 machines. I am able via vb to communicate with each database, read and write data between databases but cannot seem to figure out how to perform a simple replication.
Bottom line is, i need to be able to replicate via vb code 2 sql express databases with each other.
i have sql enterpirse evaluation version and visual basic express loaded on the same machine. from inside vb, when i select from the main menu project->new item then select the sql database icon then the add button i get the following error. connections to sql server files (*.mdf) require sql server express 2005 to function properly. Please verify the installation of the coponent or dowload from the URL: http://go.microsoft.com/fwlink/!linkID=4951 does vb express work with sql enterprise evaluation version or not ?? if so, what is it that i'm missing.
in visual studio web developer express edition 2008 i added a new item this was a sql server database which i called test2. I added a table called comments, and the fields name, email, comments, IPAddress, and Date and in my comments.aspx page i added a name textbox, a texbox for email, a textbox for comments and the submit button i double clicked on the submit button and added the following code Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim mydS As New SqlDataSource mydS.ConnectionString = ConfigurationManager.ConnectionStrings("testConnectionString1").ToString mydS.InsertCommandType = SqlDataSourceCommandType.Text mydS.InsertCommand = "INSERT INTO comments(Name,Email,Comments,IPAddress,Date) VALUES (@Name,@Email,@Comments,@IPAddress,@Date)" mydS.InsertParameters.Add("Name", TextBox1.Text) mydS.InsertParameters.Add("Email", TextBox2.Text) mydS.InsertParameters.Add("Comments", TextBox3.Text) mydS.InsertParameters.Add("Date", Date.Now) mydS.InsertParameters.Add("IPAddress", Request.Params("REMOTE_ADDR")) Dim rowsaffected As Int16 = 0 Try rowsaffected = mydS.Insert Catch ex As Exception Server.Transfer("errors.aspx") Finally mydS = Nothing End Try If rowsaffected <> 1 Then Server.Transfer("errors.aspx") Else Server.Transfer("confirm.aspx") End If End Sub Protected Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged End Sub but when i run it it gives me a problem with this line mydS.ConnectionString = ConfigurationManager.ConnectionStrings("testConnectionString2).ToString and says something abt unidentified object and I want to know how do i set the connection string or alternatively where?????? and my table does not update with the corresponding values i enter on the webpage. i also changed the authentication mode to forms instead of windows as i was advised but i'm still having a problem
I'm a complete novice concerning SQL Server (Express Edition)
I'm trying to Add or Delete rows froma VB 2005 Express Function or Sub. While the program is running everything is ok. Except when restarted added records are gone and deleted records are back.
HiIm trying to connect Visual Basic Express 2005 to a remote SQL Server Express 2005. I cant find how i can do that in VB.net Express.In Web developer there are no problem to connect to a remote SQL server but i cant find it in VB.net Express. The XP with the SQL server that i want to connect to is on the local network. Greatful for help!
This problem only occurs after deployment, not when debugging. In the table I am having a problem with I have an ID field designated as the primary key with the identity increment set to 1 and the identity seed set to 1. There is no data in the table when deployed. I can add records to the datagridview control but when I try updating the dataset I get this error indicating that the ID field already has a value of 1 present. If I close the application and re-start it, the exception no longer occurrs when I update the dataset. I am including the code to update the tables incase something is wrong there. Any suggestions?
Hi Guys, I created a Product database table using Visual Basic 2005 Express and SQL Server 2005 Express. I have just added a new column [Picture] to the database table, which of course, should store an image or picture of a product. I am writing to kindly ask you guys for help .
i) How do I include image files into this column [Picture]? ii) How do I get this image to display on Visual Basic 2005 Express form, so that when a product is selected the product image is displayed accordingly?
Let me get VERY specific. This site has 40+ pages Using VWD 2008 (Studio 2008) I have created in local IIS7 (129.0.0.2) http://cumc.lcl Navigation.master, Web.config and Web.sitemap alll are structured And all 40+ pages have been built. NOW I added (using VWD) a sql server database named pagedata.mdf With a table named: pages and fields: PageID - Primary Key (auto numbered) pagename - nchar(30) exmp Default hitcount - numeric(18,0) createdate - nchar(15) exmp 04/18/2008 updated - nchar(15) similar to createdate hitdate - nchar(15) similar to createdate bottom of each page is to show 99999 visitors and under that is to be Updated on mm/dd/yyyy On pageload should accomplish the following increment the hitcount field and save it and display it in HitLabel.text Set UpdateLabel.text to updated field Save the date the page was hit in hitdate field. (will only show when last hit)
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
End Sub </script>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"></asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <p align="center">This page is for various tests<br />and will NOT be site mapped.</p> <p align="center"></p> <p align="center">
Can this SqlDataSource be moved into Sub Page_load above? How do I extract, process and save the Hit and Date data for each individual page referenced by pagename field? <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStringsageConnect %>" SelectCommand="SELECT * FROM [main] WHERE ([pagename] = @pagename)"> <SelectParameters> <asp:QueryStringParameter Name="pagename" QueryStringField="thispage" Type="String" /> </SelectParameters> </asp:SqlDataSource> </p> <p align="center"> <asp:Label ID="HitLabel" runat="server"></asp:Label> Visitors<br /> Updated on <asp:Label ID="UpdateLabel" runat="server"></asp:Label> </p> </asp:Content>
When you work with Visual Basic 2005 Express Edition on windows XP, and if your application contains references to SQL-databases, I have discovered that it is important that all identities be logged off before you open the particular identity where you want to work on your Visual Basic project. I have earlier assumed that it was only possible to work with Visual Basic on one identity, the one where the version was registered.
This assumption was not quite correct. Actually, you may run Visual Basic applications with SQL-references on all identities on XP, provided that no other identities that are using the SQL-server are currently running.
For example, suppose you start your computer and log on the identity James. Then you switch identity, but you actually don't log off James. Then you log on the John identity. There you discover that it is impossible to create a new SQL-database in Visual Basic's Data-connections view. An error message appears. Why is that? It is because the SQL-server is busy on the James-identity. To solve this problem you want to log off the John identity, don't just switch. Then log on the James identity again, and log off properly. All identities should now be logged off. Now you may log on the John identity again, and it is now possible to create an SQL database.
Concerning deploying applications for XP. This issue is similar to the one I just described. You cannot run the installation-file successfully on one identity if the SQL-sever is busy on another identity. You want to log off all identities before logging on the identity where you want to install the application. Same thing when you want to run the deployed application.
Question. Does this limitation exist only in the express-editions of Visual Studio 2005 as a drag on free-ware, or is it prevalent in commercial editions as well? I would like to know a little more about this before purchasing the standard or professional edition of Visual Studio 2005.
I go to Server Explorer, right click on Data Connection, input the server name (that is, my own computer), give a new name to the database to create, and then inevitably get the error window saying:
An error occurred while establishing a connection to the server. When connectiong to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL server does not allow remote connections. (Provider: Named Pipes Provider, error 40, could not open a conection to SQL Server)
So, how to open a connection to SQL server 2005? I looked in the msdn but found absolutely nothing.
I'm struggeling for more than a week now with this problem, without a finding the solution.
I have two databases, MS Access and SQL Server 2005 Express Edition
Using a procedure in Visual Studio i would like to copy all the records from one table in MS Access into an existing table in SQL Server (the tables have the same name and the same layout)
I tried to prepare one Dataset to copy from Access into SQL Server but when i run the command 'DaSQL.Update(DsSQL, "Tabella") nothing happens (not even an exeption has been raised), looking during debug, the DataSet seems filled though...
Please could anyone explain what's wrong and / or is there a more quicker way to copy data from a table to another?
Note i woul have as a final goal to get data from an AS400 database by ODBC, manage it, and put it on SQL Server for a 'data mining' scope (eliminating the use of MS Access, not suited for FE-BE).
the procedure goes like this;
' Create a connection to the MS Access Database Dim connectionToAccess As New OleDbConnection(DBConnectionAccString) strsql = "SELECT * FROM [TABELLA]" connectionToAccess.Open() Dim DaAccess As New OleDbDataAdapter(strsql, connectionToAccess)
Dim DsAccess As New DataSet("ACCESS") DaAccess.FillSchema(DsAccess, SchemaType.Source, "Tabella") DaAccess.Fill(DsAccess, "Tabella")
' Create a connection to the SQL Database Dim connectionToSQL As New SqlConnection(DBConnectionSQLString) connectionToSQL.Open() Dim DaSQL As New SqlDataAdapter(strsql, connectionToSQL)
Dim DsSQL As New DataSet("SQL") DaSQL.FillSchema(DsSQL, SchemaType.Source, "Tabella") DaSQL.Fill(DsAccess, "Tabella")
I already have SQL Server Express 2005 installed from having Visual Studio 2005 installed. How can I tell if it is the SP2 edition? It probably isn't, so my next question is what is going to happen when I install Visual Studio 2008, which I will be doing in a day or two...will the install overwrite SQL Server Express 2005 with the latest edition to SP2, assuming that the latest edition will be on the Visual Studio 2008 installation discs? I have not yet used SQL Server Express, so my knowledge level with it is very weak. What I'm hoping to find out with this question is what I'll have (with respect to SQL Server Express) and the install of Visual Studio 2008. I can't even figure out how to tell what version of SQL Server Express that I now have.
I successfully installed .NET framework v 3.5 and VWD 2008 on a new Vista laptop. When I want to add a Sql Server database to a website, errors tell me to install SS 2005 Express. MSDN SS 2005 Express download tells me I MUST first install .NET framework v 2.0 before SS 2005. When I try to install framework v 2.0, I'm sent to v. 3.5 and no way to download SS 2005.
How does one install a express sql server to run with Visual Web Developer 2008?
I have installed the The Microsoft Report Viewer 2008 Redistributable Package and I add the report viewer component to my toolbox list.
while viewing the report viewer in my solution ...i was getting the error as given below..
Note: InnerException = {"The report definition is not valid. Details: The report definition has an invalid target namespace 'http://schemas.microsoft.com /sqlserver/reporting/2007/01/reportdefinition' which cannot be upgraded."}
I installed both SQL 2005 developer and SQL Server 2005 Express Edition with Advanced Services SP2 and Microsoft SQL Server 2005 Express Edition Toolkit.
In every version "SQL Server Business Intelligence Development Studio" was missing. I uninstalled and reinstalled both version but always "SQL Server Business Intelligence Development Studio" was not available and the computer could not find devenv.exe file.
I installed visual studio 2008 as well. For some reason the start menu link for "SQL Server Business Intelligence Development Studio" is ""C:Program FilesMicrosoft Visual Studio 8Common7IDEdevenv.exe"" and devenv.exe is not there or anywhere
Hi, I want to make a component library in Visual Basic.NET and connect to a remote Sql Server. When I create a new DataSet with the wizard, I can only connect to a .mdf file, but not to a Sql Server. With Visual Web Developer I can connect to a Sql server. What is the difference between these enviroments ? How can I do the same with Visual Basic.NET ? Thanks in advance.
I've installed Visual Basic 2005 express edition & tried to connect to SQL Server 2005 express edition. I noticed that VB2005 Express Edition doesn't have any OLEDB provider for SQL Server. The only OLEDB Provider is for M.Access. Is this correct? if so, what should i do if i want to connect SQL Server 2005 express edition with VB2005 express edition by using OLEDB connection type?
I really appreciate any respond from you guys.. Thank's and waiting for the good news..
When I downloaded/started using Visual Web Developer I was under the impression that I needed to install SQL Server Management Studio Express in order to create/manage databases, and to provide the engine to access the data. Since then I have found tutorials and have successfully created/used databases solely from within Visual Web Developer. I'm assuming that Visual Web Developer includes a database engine, much like the webserver that is included. (This is an awesome thing). When I tried to upload my web application with database to my production server, the database would not work, it started working after I installed SQL Server Management Studio Express on the server. Is it my understanding that you need SQL Server Management Studio Express if you do not have Visual Web Developer Express installed in order to provide the data access engine? Also, I am unable to "attach" my Visual Web Developer Express created database to SQL Server Management Studio Express. Are there any posts that provide more information about this topic?
The only reason I'm asking is that I have extra whitespace on the end of my text fields, and I thought ANSI_PADDING was turned on. I do not see the option in Visual Web Developer Express, but have found it in SQL Server Management Studio Express.
Here is the error message I get:http://img109.imageshack.us/my.php?image=error2ug.jpgI have just installed both packages and havent done much in the way of configuration... What do i need to do? Thanks!
