I am using SQL server managment express. I have 4 databases in it and got a bug on my computer which I could not get rid of. I saved these to disk and reinstalled windows, I reinstalled SQL server and I am now trying to add my 4 databases. Can any one help me with this, I can add a new database but not an existing.
View 2 RepliesI have a DataGridView bound to a non-SQL Server database.I need to allow users to edit existing records but under certain circumstances I need to intercept the edit and instead of committing and updating the dataset I need to delete the edited record and re-add it as a new record.I have tried using every event I can think of to do this but haven't managed to get it right. [code] This almost works but sometimes completely messes up and re-adds rows twice and all kinds of other bad side effects.
View 9 RepliesI have a simple database with our customers data. I'm using access database, dataset, and a datagridview. So when I selected a row, I want to make a new row with datas from selected row. Here is my code:
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I am looking for a logic that loops to all records in a temptable and checks if the record exists in the final table (structure is different, only some fields are to be inserted in final). When the record does exist in final, a record should be created in a table duplicate.
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I want to move my programs and the database to another computer and hard-disks. It looks to me as though I nearly have to re-create the controls and rewrite some of the code to make it so the programs still work after the move. At least with ODBC all I would change was the DSN definitions external to the programs. Is there an easy way to move or rename a database without loads of work?
View 3 RepliesI'm creating another database searcher, only this one is a little better user friendly than the one I made with a datagridview. I'm using the "details" of my dataset(CustomersDataSet) and trying to add a record into an existing database. I'm using this code
Me.TableAdapterManager.UpdateAll(Me.DatabaseDataSet)
which worked for me when using the datagridview, but for some reason it won't work now. Even when I check for my test "add a customer" in the access database itself, it isn't added.
I am trying to copy a table from a network database to a local database. I used DAO and could check if the network table existed using a function that tried to assign a TableDef object to the table in question. If there was no error then I assumed that the table existed and the function returned true...Or it would error out and return false.I could then proceed with the copy or not as the case may be.I am converting the code to ADO.net and need to know how to check for a table. [code]
View 1 RepliesI need to add a column to an existing table in my database. I am having trouble adding a column to my database. I physically go into Microsoft Access and add the column, my problem comes up when Visual Studio does not recognize the table. Basically, I think I'm doing something wrong.
View 5 Repliesi am using vb.net2010 and mssql as my database. what i want to do is when i open the form, the database will auto increment the student id and show it on the text box.
View 13 RepliesI have this Add User Form and a Function Class, I need to know if the username typed in the Add User Form already exist in the database, so that I can warn to change the username but I have problems doing that.
Here's the code for the function class:
Public Function addUser(ByVal arole As String, ByVal ausername As String, ByVal apass As String, ByVal aname As String, ByVal aaddress As String, ByVal aregion As String, ByVal aprovince As String, ByVal atown As String, ByVal adate As Date, ByVal acreator As String) As Boolean
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I am working on a database application for my Class Reunion in VB.et and VS 2008, My problem is when i build the program it will only work with 1 Database For my Class year, I would like the ability to be able to create a new database for a different classyear than the 1 i build and pre-Populate, so the person using it can do more than 1 year and keep the databases seperate.
View 3 RepliesHow to get the value of table in sql database and adding in existing table?
View 1 RepliesI'd followed Beth's video which nicely explains how to setup a "connector" to an existing database. Also, I've updated a method to retrieve information from one of the tables.Now, I need to retrieve information from the table, but I don't succeed to find the "method" to do so (I don't get to the situation that "Fill" or "GetData" are recognized methods). Could anyone send me references through which I could easily understand. how this needs to be done?
View 1 RepliesI have a series of .DAT files I need to read into vb.net and then parse the data into a format that can be easily read into an SQL database that already exists. Would I be using a StreamReader object? Or is there a different way to go about this?
View 11 RepliesRecently working in vb 2010 express. I'm using service-based database which is based on SQL Server. This database will be deployed at the server. Is it possible that multiple vb.net programs, which are installed in remote computers or client computers in the same network, connect to this database simultaneously? Does the service-based database support multiple connections?
View 1 RepliesI would like to make a copy of an existing database in microsoft SQL Server 2005 in code, if that is possible. I'll need to make a copy of the original one, and change the name to some other name choice. All tables, stored procedures and such will be exactly the same.
View 4 RepliesI have text box and button when i clik tht button it has to display all the data if it is relevent to the data else it has to say no data . my project is about track cd. name textbox that i want to search is txtTitle.
i want something like search forum in this website when u clik on search it will get the data same way i need the solution either it is from database or index service
how to update records on an existing access database using vb.net with just a textbox and a command button and how a specific record of a field can show up in a label or a textbox
i connected vb.net to my access database by just clicking on "add new data source">>"new connection">>"microsoft access database file" and just continue..tested connection and done.
you can see in the screenshot of my form, by default the left side textboxes are disabled but they're enabled if the user checks the checkboxes and disabled again if unchecked.
assuming that the textbox is already enabled and i want to enter a value in the Brewed Coffee area of the form...for example 5. when i click on my Submit button the value of that particular record in the database will be updated, so in my table the value of the quantity field in Brewed Coffee will be 5.
another thing is that how can i see a particular value on a label or textbox from my database like on the Prices area. in my database if a product's price is 80 then it should show a 80 in the label. the values of the prices from the screesnshot of the form are not the ones on the database xD i just typed them in.
I'm having a problem with the error in verifying the usernames that are already existing in the record/database.
When you inputted a username that already existing it will throw an exception, and when you change the username, it still throws the exception.
I am creating a program for an existing database that stores the info into the database. So can I link an already existing database in MS Access to a GUI?
View 2 RepliesIm working on a prog for my work. however, im stuck. I come to a spot where i need the prog to copy a sample table to an existing database. we can either simply copy the sample table, or as a last resort, create a new one from scratch.
View 6 RepliesI am working with VB.NET.. i have a DataTable called "QUESTION", containing 3 fields:
QuestionNumber (unique integer key)
QuestionText
QuestionType
In my SQL Server database I created a Table called "QUESTION" with the same fields.
QuestionNumber is defined as integer unique key, auto increment
Now, when i make a bulk copy to insert the DataTable into the SQL Server, the database overwrites my QuestionNumber from the DataTable and generates new ones (starting from 1 increment 1).
How do i have to change my database setup, that the original QuestionNumbers are copied into the database?
In my program theres a form where the user enters the ID number and other details of a customer. i want the program to be able , If the ID number already exists when the user enters it and clicks on ok, to display an error message telling them that the ID already exists otherwise it adds the id and the details to a database. Im not sure how i would do that im thinking it would be an SQL statement? not sure.
View 7 RepliesI am using Microsoft Visual Basic 2010 Express. I have a WPF-based project. I have a successful connection to a database in Database Explorer, and a working existing Data Source in Data Sources.
I created a datatable from the datasource using this code:
Dim roster_table As New DataTable("AGENT_ROSTER")
I can manipulate this datatable just fine, but I cannot figure out how to save its data to my database (agentroster.sdf) since the connection is on a global level, and isn't declared in this particular window.
How do I update this database from the datatable on this window?By the way, I tried creating a connection on this window's code, using the exact same connection string as the successful globally-connected database, yet it said that it couldn't connect.
I have a purely XML database. It's stored as XML, there is no other database file. I did this by first creating a dataset in VB, then adding tables and relationships. I load the database by calling DataSet.ReadXml(FilePath), and save the database by calling DataSet.WriteXml(FilePath).
Now I need to make schema changes, but need to preserve existing data. How might I go about doing this? As soon as I load the database I loose all data if I change the schema in the dataset designer.
I have searched for changing database schema, but everything I find deals with real databases, not XML only ones, and the info doesn't apply because they are using db connections and then running sql against it and AFAIK XML databases have no way to "connect".
I add several unbound columns to datagridview,i've succeeded to copy data from other datagridview to this unbound dgv and also got save database from unbound datagridview to database using tableadapter.insert worked .But i can't figure out how to display the data back into the datagridview with existing column..I've tried using this way :
Try
Dim cn As OleDbConnection = New OleDbConnection_
("Provider=SQLNCLI;Server=.SQLEXPRESS;Database=salon;Trusted_Connection=yes;")
cn.Open()
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The system should not insert selected records from my datagridviewcheckboxcolumn if it's already existed in the database.It's like when you're registering online. If you're username/email address already registered,it would inform you that youre username/email is already registered and the site would ask you to change your username/email to new ones.The difference in my system is that i have 2 datagridviewcheckbox columns not just textboxes . Parent and Child in the datagridview. What i want to happen is that once the Code has been registered as Parent it cant be registered again as Child anymore.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
connectionString = ";"
sql_connection = New SqlConnection(connectionString)
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I need to make a program in vb that takes a 1 page existing pdf that i specify and inserts that into another existing pdf that i specify.
View 4 RepliesI need to programmatically add a row to a MS Database.How is this done?
View 2 RepliesI don't actually know if I can use any XML file as a database that I can edit and make some changes to it using vb.net 2008 and save them. Because I'm working aboard a war ship and we have a central automatic system to control all the internal communication using standard telephones. to reprogram the extinctions we used to have a MS DOS program and it's so old and now it's totally lost and not found and after a long searching I have found a file that could maintain the extensions and reprogram the system but it's an XML file.
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