Vb net adapter rowupdating
Deleted Then 'stored procedure for deleting End If End Sub End Class and the form code is Private Sub Form1_Load(By Val sender As System. So after update to database you should call Data Table. These are only for the Client side data stored in the datatable the nackend is only updated through Data Adapter or Command Object. I notice that that i need not give these statements DABlocks. Row Updated event is not firing , I have added the event handler in constructor It should I can't say why its not firing, Check your code something must be there somewhere 4.
Before i close the question and award you full points , there are one two small things i would like to know. The Row Updating event is firing only for new, updated and deleted rows only and not for all rows. Now in case you make a change say modify a value the Has Versions is set to true and the old row as well as the new row is stored in the datatable. Accept Changes (or reject Changes) the versions are removed and has Versions is set to False. Delete Command = CMDDelete Blocks still the relevant command objects run. BUT this is true only for a single table Query, if your Select Command given to the Data Adapter is a Join Query it will fail and give Error, then it will require explicit Queries for each of Insert Command, Update Command and Delete Command 3.
I am taking the oledbinsertcommand1 query inside a class, inside a function, and converting it to oracle stored procedure for inserting a new row. How can i ensure that when i call Oledb Data Adaptor.update(Dataset), the 4 values will be copied to 4 parameters defined in stored procedure and the stored procedure will be called and a new row will be inserted.
I have one table still i will be using explicit queries(infact stored procedures) and not using Ole Db Command Builder. Kindly go though and tell if i am doing the correct thing and going in correct direction. Row Updating, Address Of Row Updating Fetch Blocks() End Sub Public Sub Open Connection(By Val str Username As String, By Val str Password As String) Try con Database = New Ole Db Connection con Database. Select Command = CMDFetch Blocks Try With CMDFetch Blocks .
Your Data Adapter takes 4 arguments because you have 4 fields also because it is an Insert command if it were Update command it would have taken 8 parameters 4 for the modified value and 4 original value So Now if you want to use a class to do the above operation, you need to pass appropraiate parameters to the class so that it is passed to the stored procedure. But this being vb.net, isn't the CMDInsert Blocks object will automatically be called, courtsy the following thing defined in class. Insert Command = CMDInsert Blocks Help and more clarification sought Thanks First thing don't confuse your Classes like objblocks with VB.
The Sql Command Builder object acts as a listener for Row Updating events, whenever the Data Adapter property is set.
You can create a Sql Command Builder object to automatically generate SQL statements for single table updates if you set the Select Command property of the Sql Data Adapter. Sql Data Adapter adapter = new Sql Data Adapter("your sql statement", connection); Sql Command Builder cmd Builder = new Sql Command Builder(adapter); adapter.
your Datatable/dataset that will be updated through the data Adapter should be dealing with only one table (No Join Queries).
Insert Command = CMDInsert Blocks However this is valid only if you are working on asingle table, i.e.