Vb net dataset updating

Private Sub btn Update_Click(By Val sender As System. Open() Dim cmd Select Command As Sql Command = New Sql Command("SELECT * FROM Stock", conx Main) cmd Select Command. Select Command = cmd Select Command Dim builder As Sql Command Builder = New Sql Command Builder(dad Purchase Info) dad Purchase Info. Dispose() End If If ds Purchase Info Is Not Nothing Then ds Purchase Info. I'm just guessing the query constructor is not able to generate an update statement for a table which doesn't have an identifier. (it looks like it doesn't - so it doesn't know what do to with update....) Here is an Update Command example:(for an employee table with 3 columns - as listed below: UPDATE [Employee] SET [name] = @name , [manager] = @manager WHERE (([id] = @Original_id) AND ((@Is Null_name = 1 AND [name] IS NULL) OR ([name] = @Original_name)) AND ((@Is Null_manager = 1 AND [manager] IS NULL) OR ([manager] = @Original_manager))); SELECT id , name , manager FROM Employee WHERE (id = @id) How about this part? Dim cmd Update Command As Sql Command = New Sql Command("UPDATE Stock SET Stock Code=' Re-Fashion(H)' WHERE Stock ID=2", conx Main) cmd Update Command. Update Command = cmd Update Command Dim cb Update As Sql Command Builder = New Sql Command Builder(dad Purchase Info) dad Purchase Info. Item("Stock Code") = "Re-Fashion(H)" End If Next dad Purchase Info.

Click Dim conx Main As New Sql Connection("Data Source=SERVER; Initial Catalog=DBTest; Persist Security Info=True; User ID=username; Password=pwds") Dim dad Purchase Info As New Sql Data Adapter Dim ds Purchase Info As New Data Set1 Try Dim d Row As Data Row conx Main. Update(ds Purchase Info, "Stock") Catch ex As Exception Msg Box("Error : ") Finally If dad Purchase Info Is Not Nothing Then dad Purchase Info. [email protected] Devils: It's recommended you set that column as primary key, but that's beside the point. you can use visual studio wizard to generate an update command, or write it yoursefl.

I am trying to update my physical database using a dataset.

There is no error that appears but the Table in my Database doesn't updating at all. NET This is my code for updating my database table name "Prod Rec" Public Sub grid() connect() MD = "Select * From Prod Rec" com = New Ole Db Command(MD, conn) adaptr = New Ole Db Data Adapter(com) ds = New Data Set adaptr.

Insert 4 textbox named txt Search for the searching of student number as this is the primary key, txt Name for Student Name, txt Course for Student course, and txt Section for student section. Create a module in your project and named it, mod Connection. For the btn Add as adding and saving records to database button, put this code below. Add New() End Sub Private Sub Save_Click(By Val sender As System.

We will first create a try and catch method to have the exception handling.

Subsequently, we create two fields and name them Contact Name and State respectively. NET offers a number of connection objects such as Ole Db Connection, Sql Connection and more. Dispose() End If If conx Main Is Not Nothing Then conx Main. Dispose() End If End Try End Sub --MENU-- Dim login As New Login Class login. Private Sub btn Update_Click(By Val sender As System. Fill(ds Purchase Info, "Stock") For Each d Row In ds Purchase Info. Message) Finally If dad Purchase Info Is Not Nothing Then dad Purchase Info. Conectar() Dim coman As New Sql Command("sp_cliente", Conec) Dim dt As New Data Table coman. Dispose() End If If ds Purchase Info Is Not Nothing Then ds Purchase Info.