I want to know the code used to ADD, SAVE AND DELETE records in VB 2010. eg. I have a fully created DataSet, etc and I have three Buttons.. So to add a new record what code do I put in, same for the other two ( Save, Delete)
I know the code for VB6: Adodc1.Recordset.addnew ......
I use This Code To Save Data in Table First I delete record Then Insert record
View 4 RepliesHow do I force users to save the current record (if current record has changed) and not let user go to the next record unless the save button is pressed?
View 5 RepliesThis code i had use for create a field in DB Access 2003:
SQL = "ALTER TABLE plano_contas ADD declperiodica06A char(40) WITH COMPRESSION NULL)"
Dim command1 As New OleDb.OleDbCommand(SQL, con1)
con1.Open()
command1.ExecuteNonQuery()
con1.Close()
like you see the code create a Text field with 40 lenght...Well the problem is:When i save a new record the record it's save in this mode: "100......... .........................." - the points means spaces and should be:"100"After try a lot of things i'm without more solutions in find why this happen!
I know how to display or manipulate (add,delete,update,search) records using the OleDbDataReader and OleDbCommand class. But I'm clueless in getting the total record on a query.
View 1 RepliesIm trying to find out what code i would use if i wanted to search all my records in a table for those who are female...but the problem is what kind of place i should store these records initially, Mdf or Mdb? i've tried using dao code (rs.findfirst...but it says theres an error about read only database or something...)
View 8 RepliesWith printing a record in Visual Basic. I have an access 2007 datasource. I'm running VB2008 express.
View 2 RepliesWe are busy with crystal reports, vs 2005. We put a simple table on the report and we want to see on every page a record. How can we force a new page in the report for the record? We don't want to do it in script.
View 1 RepliesI'm a bit of a newbie and am trying to delete the current record on a form. next record, previous record is easy. i just write the following Me.CustomerBindingSource.MoveNext()
How come there is no "Delete" method available? such as:Me.CustomerBindingSource.Delete()
code available? I have my form binding to a database table called Customer and am wanting to write code for my own record navigator buttons.
Got a form linked to a database and i have the first column of data appearing in a list box on my form. In the database there are two records with the same value and so, of course, in my list box the value is given twice.How do i remove this repetition from the list box? (still keeping it the same in the database)
View 5 RepliesI have a dataset; I want to create an equivalent record set. What I really want to do is create the XML that a record set can load; I have no other use for the record set per se. I want to be able to load recordsets on other machines (which use VB6 ins of vb.net) with this data. I found some code that loops through the columns in the dataset and creates the fields in the record set; that's executing. However, the code given to open the record set fails with "incompatible or incorrect parameters" or some such. [Code] I can see that a recordset is a construct meant to bridge between running code and a data store of some sort, but in this case the data is "stored" in the dataset, not anywhere else. I want to put that data in the XML form that the recordset uses, so that other code that can only use recordsets (ins of datasets) will be able to read it.
View 2 RepliesI just want to add a value from a textbox/variable and save it as a new record in a MS Access Database after a button click.
I've set up the database, set up the tables required.
From what I gather, I need to first link declare 'Imports System.Data' outside all the code. And also define a variable as a connection (Dim con As New OleDb.OleDbConnection) then access the database with "con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = PathName").
What else do I need to include?
I have this code that Deletes a record by its IP address inputted by the user. How do you check if that record is available? how do evaluate first that the IP address inputted is not in the database before deleting anything? in vb 6.0 I used to do this line:If rs.EOF And rs.BF Thenbut it doesn't work anymore in vb 2008
Code:
If TextBox1.Text = "" Then
MsgBox("Input IP Address", MsgBoxStyle.OkOnly, Title:="")
[code]......
I am having a ton of trouble trying to check if a record exists. I continue to get a data mismatch on my command.ExecuteScalar().
Code:
Protected Sub btnRegister_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnRegister.Click
[code].....
I am using Visual Basic 2008 Express edition along with mysql manager 2008.I have made a bank database and am looking to add a feature to update the balances of customers (individually) when i withdrawl or add money.The code i am using currently is
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
Me.Validate()
Me.StudentBindingSource.EndEdit()
[code]....
This is the same function as the Save record but, i want to be able to enter a value into a text box and then click the button to update the balance.
using a database with Visual Basic?
I've got my screen done and added database buttons (BindingNavigator1), and added a database source.
Aslo how do I add, edit, remove a record to/from the database?
Edit a record and write the changes back to the Access database.Also,Remove a record from a Access database.
View 8 RepliesYes its me again with yet another problem Ok so I've now gotten round to trying to display some data from my database and displaying it in a DataGridView Heres the critical part
[Code]...
I have a self referenced table it contains Employee information, an employee reports to another employee, I've done this by including a field named ReportsTo as a foreign key that would be filled with the primary key. My first question is when using a strongly typed dataset how would I insert the first record without raising an error. the only solution that I could come up with is to insert an employee with the name NoOne and reports to himself i.e the employee number is the same as ReportsTo, this solution would be hardcoded in my program and only works when there is no records in the table. This is ok as long as I don't delete every employee from the table and try to insert new employees, in this case my insert will fail because the NoOne employee number is "1" and this would violate the index. this case calls for reseting the index each time I delete all the employees.
View 2 RepliesI am working with some DBF database files and have an interesting dilemma. I need to search through a table, find duplicates and delete them. Problem... Table doesnt contain a key.
So Table looks like this:
Name, BadgeNum
I need to be able to find instances like this:
John, 10
John, 10
and then delete just one iteration of John, 10.
Is this even possible? A "DELETE FROM TABLE WHERE BadgeNum=10" will delete both.....
I 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:
[Code]...
I have a code made in Visual.net 2005, and I have a problem. I have an excel file where I store records. I can read this records without problem, but when I want to make a modification I get the ERROR :
"Current Recordset does not support updating. This may be a limitation of the provider, or of the selected locktype"I hope you can help me, I know that by default the file is open as readonly, but I dont know where do I have to specify the opposite.
[Code]...
i have a situation where I need to search a table for a specific record that matches an ID number the user will specify. I know 2 methods to accomplish this. The first would involve writing some VB.net code that would call a TSQL statement and return the value through the return parameter. The second method would involve creating a dataset and populating it with a select statement.
View 2 RepliesSay I have a table called tblTest in MS Access with the primary key called field0 which is set to autonumber and a few other fields, say field1, field2 and field3. Say also, I inserted a new row using:
SqlO = "Insert into tblTest (field1, field2, field3) Values (value1, value2, value3)"
Dim cmdO As OleDbCommand = New OleDbCommand(sqlO, conn)
cmdO.ExecuteNonQuery()
[code]......
I am using VB 2008 and SQL Server 2005. I have a texbox in which I need to show the field 'domain' from the table x. I am getting the field in the format needed from a stored procedure.Below is the Vb code that I am using in which I am getting an error message: Invalid attempt to read when no data is present.at this line sDomain = sDomain & " " & v_DR!Search
[Code]...
I have been following a tutorial in a book Vb 2005 Jumpstart Ch 4..Anyway I have followed the books code exactly and the program runs.It connects to Amazons web service and allows the user to search and display books, the application also allows the user to save the titles that they wish by clicking an Add Title button, when the user does this the current focus title is saved to the database and can be viewed off line.When I hit the add title the record gets saved as I can hit the catalog button which opens a new form with a datagrid that has all the titles I just saved in it!! But when I close the app and run it again the catalog is gone?? back to no records again?Now ive never worked with SQL databases before and this is me just having a go at .Net so I have no idea whats wrong or where to look.[code]
View 6 RepliesHow can I remove the first column in a datagridview. I mean the first column with the record pointer? I am using VB.NET 2005. Also I am not binding the control to any database.
View 6 Repliesim trying to create this program for tarantula keepers record.im still halfway to its completion.I have MySQL installed on my pc and i used navicat to easily create my database and tables.I exported it as MSAccess file to my Projects folder.I used datagridview to display my data. it works fine on that part but when i close my program and reopen it, my data are not saved and no change has been made to my database.Here's some part of my code:
Dim dbdataadapter As New OleDb.OleDbDataAdapter
Dim sql As String
Dim dbprovider As String
Dim dbsource As String
[code]....
For a school programming project we are supposed to create a database with 2 tables country, and continent.then we populate country with every country name, population and continentID. For continent we populate with each continent name.
i have completed this step, and i am able to run a linq query to display all countries and corresponding continent into a datagridview. My problem arises because we are supposed to display each record one at a time, and be able to cycle through one at a time. I cannot for the life of me figure out how to do this.
for example if i made a query to select all countries in africa, i want to beable to display the name of the country, and population in textboxes. then have a next button that will go to the next record.
I am working with SQL Server express 2008 And visual Basic 2008. Here's what I'm trying to do, if it is possible.
I am using an Insert query to create a new record in the table. A sequential ID number is inserted into the database when the query is run in Visual Basic.
I want to capture this ID number in a variable and use it immediately following the execution of the query.
Is this possible or do I have to capture the value in a second query.