Cannot Connect To Database After Exiting The Program.
Mar 6, 2008
Hello,
I have been writing this piece of software for quite a while. And as it got bigger and bigger (more forms, more datasets) I started experiencing the following problem.
Well, I use an MDF file as a database container that gets copied to the destination directory after each build.
Well here is what happens:
I launch my application, work with it, search the database and so on and so on.
Then I exit the application.
I launch it again and I get en exception saying that file counld not be located on the disk.
I close the app, and run it again. I get the same thing.
Somtimes after a couple of tries I get an error saying that my user does not have rights to access the default database. (I have windows authentication on SQL server)
Now here is the trick: I open SQL Server Management Studio Express detatch (Delete) the database from the default server (the only one in the system ".SQLEXPRESS") and the application runs again.
What am I doing wrong? How can I programatically detatch the database from the server (Maybe some sql command)? Do I need it though?
This is the connection string that I use for connection:
Code Snippet
Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\MyAppDB.mdf;Integrated Security=True;Connect Timeout=10;User Instance=False
But the confusing part of it is that it happend on my work computer and not on my home computer. I have the same User/Password/Workgroup/VS version/MS SQL versoion/Windows version on both machines.
Is there a way that upon exiting VSS I can be warned if I have programs checked-out, so that I don't leave for vactaion with an important program checked-out?
I am developing a program to connect to SQL 2005 Express. I don't know if I need any CAL license in order to make the connection. If it is not necessary for the Express Edition case, how about if my client upgrate to SQL 2005 in the future? Do I need CAL license for SQL 2005?
what the program will do if we caught that exception .. i need some suggestions ... i got this exception(String or binary data would be truncated. The statement has been terminated.).. will it affect the functionality of the program...
I have an existing publication and I want to modify an index on my main server. I do not want the index to be pushed out to the other server, but I'm wondering if the index will break replication.Any thoughts?
CREATE PROCEDURE [dbo].[WWspLoadData] @Planid varchar(5), @OverMar int = Null
need to check here if the @PlainID exists in the tbOldCustomers.PlainID if it does exists then do nothing and exit the store procedure, and if it does not exists continue to the rest of the store procedure.
An Execute SQL task returns one row with two values that are correctly stored into variables.
Based off those two variables, a sequence container is chosen to execute.
That sequence container then does magic. The last step of the container has an execute SQL task that runs and stores the result in a variable - let's call this[User::result] with type Int32.
Based off the value in [User::result] one of two final tasks run. A non zero value executes one task; a zero value executes another. Basically,SOMETHING runs after this.
Simple? I thought so... except Step 4 doesn't work. If I set a post-execute breakpoint on the sequence container, the variables are populated as expected, but nothing else runs. If I add another task to run (without a conditional expression) to run after the sequence container completes, the pre-execute breakpoint shows the data looking exactly as I expect.
Those script tasks are just MessageBox.Show calls and the expression, as you can see, doesn't use variables at all.
I am currently writing a program that will use a SQL database. I am use to writing programs that are used to connect over some type of a network, but for this project I need to be able to load the Database and it's tables to the system locally. If anyone has a suggestion it will be greatly appreciated, or any sites for documentation on it. Thank you.
I have written a program using vb 2005 express that will create menu items after the user presses a particular button. So if the user picks a mountain dew then inside the reciept window(list box) the user will see 1 MT DEW $1.00 also as the user selects more items the price is calculated and displayed also.
This part of the program works fine. After using the program for a while I realized that I will need to update prices and be able to add and subtract items from the menu that customers order from. The way I accompolish this now is to go back into my code and rewrite alot of code. From reading the forums I think that a database would be a good solution because what I have gathered so far is that by seperating the data into tables i.e price_table it would be easy to update anything in that table and not have to change the code anywhere else.
I have created a database that contains a table for menu items and each item has a menu_item ID,menu_Name and I also have a Price table and each price now has it's own price_ID
I would like to have code under the button click event like so:
createMenuItem(By Val Food_ID as Database object, By Val Price_ID As Database object)
display(Quantity,Food_Name,Food_Cost)
Food_Cost = Quantity * Price_ID
I know that this code does not work but If someone reading this has any ideas which part of database programming this falls under I could use a nudge in the right direction.
In a nutshell I would like to create menu items using the id's from the database
the data in the database would remain static and would only be used to supply arguements for my procedures and function that I use now.
hi. When i click on the button, it will go to another page called fileB.aspx, it will query database based on textbox parameter from fileA.aspx and display gridview on fileB.aspx It is based on sqldatasource. abit noob on programming visual basic.Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click 'Code go here.End Sub
I am reading a guide telling how to create a private server and it says I need to restore the database. So I go to File->Open->File->My Computer->Local Disk->Program Files->Microsoft SQL Server->MSSQL.1->MSSQL->Data->GunzDB. Then the following message comes up: "The file cannot be opened because it is being used by another process. Please close all applications that might access this file and try again."
The question is, how do I get past this? I need the answer as soon as possible, I am a newb with this program so I don't entirely know what I am doing. I have tried searching for the answer, but I cannot find anything.
the idea is to put together a folder that is in some place in the computer, like "c:excel_fles" and the database full backup in a single .bak file, the database can be recovered with sql server management studio(but no the folder), the restoration of the program can be done with a program, I think it can be done with msdb, but I'm a little lost in the road.
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string sCon = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();SqlConnection oCon = new SqlConnection(sCon); try { oCon.Open();string sQuery = "Select Offering1,Offering2,Offering3 from Offering";SqlCommand oCmd = new SqlCommand(sQuery, oCon); oCmd.ExecuteNonQuery(); DataSet oDs = new DataSet();SqlDataAdapter oDa = new SqlDataAdapter(oCmd); oDa.Fill(oDs); DataList1.DataSource = oDs; DataList1.DataBind(); } catch (Exception ex) { ex.ToString(); }
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It can not connect with my SQL server and gives the error: Could not create new database.
What can be the problem. My MSSQL Server is running perfect.
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A newbie needing some guidance. We have SQL running on our Windows 2003 server. When I connect via the Enterprise manager I have two instances of SQL running.
SRV01ACT7 (Windows NT) SRV01WEBAPP (Windows NT)
When I click on the ACT instance I get the following error: A connection could not be established to SRV01/ACT7
Reason: Login Failed for user xxxxadministrator. Please verify SQL Server is running and check your SQL Server registration properties.
I only get the message when I try to connect to the SRV01ACT. The connection to SRV01WEBAPP works fine.
I checked with SQL server manager and both instances are running and no one has reported any problems connecting to either one of them.
The way it acts, its as if SQL server has lost the ability to authorize a connection via the windows account. As if it has lost its associatoin to the administrator account. So while the instance still runs and is functional, I just can't connect to it and manage it.
I have connected via remote desktop from a WinXP machine and the server console. Both end up with the same error.
Can Someone give me step by step instructions on how to correct this?
