Updating database from DataGridView - sql-server

Question

I have a datagrid view which loads data from a data table
This data table is filled with data from a SQL Server database
When the user loads an invoice, I fill a data grid view from this datatable
I then allow the user to modify the invoice, this will include adding/editing/deleting rows from the data table
This data table is then updated to the database when the user presses a save button
I need a way of detecting the row status so that it updates the database correctly
I am able to add a row no problem
However is the user tries to delete a row which was fetched from the database it removes it from the data table, but does not remove it from the database
Furthermore, I need to allow for users to add a row and then delete it without the row ever existing in a database
Here is the code I currently use
Dim boolAdded As Boolean = False
Dim boolDeleted As Boolean = False
Dim boolChanged As Boolean = False
Dim cB As SqlCommandBuilder = New SqlCommandBuilder(SQLAdaptor)
Con.ConnectionString = CropTrackMod.strConn
SQLAdaptor.SelectCommand = New SqlClient.SqlCommand("Select * FROM TicketDetailv2 where ticketref ='" & strEditTicketRef & "'", Con)
For Each row As DataRow In myTable.Rows
If row.RowState = DataRowState.Added Then
boolAdded = True
End If
If row.RowState = DataRowState.Deleted Then
boolDeleted = True
End If
If row.RowState = DataRowState.Modified Then
boolChanged = True
End If
Next
If boolAdded = True Then
Dim tmpAddedMyTable As DataTable = myTable.GetChanges(DataRowState.Added)
If tmpAddedMyTable.Rows.Count >= 0 Then
For Each row As DataRow In tmpAddedMyTable.Rows
row.Item("TicketRef") = strEditTicketRef
Next
SQLAdaptor.InsertCommand = cB.GetInsertCommand
SQLAdaptor.Update(tmpAddedMyTable)
End If
End If
If boolChanged = True Then
Dim tmpChangedMyTable As DataTable = myTable.GetChanges(DataRowState.Modified)
SQLAdaptor.InsertCommand = cB.GetUpdateCommand
SQLAdaptor.Update(tmpChangedMyTable)
End If
If boolDeleted = True Then
Dim tmpDeletedMyTable As DataTable = myTable.GetChanges(DataRowState.Deleted)
SQLAdaptor.InsertCommand = cB.GetDeleteCommand
SQLAdaptor.Update(tmpDeletedMyTable)
End If
Any help would be appreciated
Thanks in advance guys

Answer 1

I have now fixed the error of my ways
The issue was being caused because i was removing the row from the dataTable like this
myTable.Rows.RemoveAt(dgvTicketDetail.CurrentCell.RowIndex)
however if i delete the row like this it works
myTable.Rows(dgvTicketDetail.CurrentCell.RowIndex).Delete()
This works because it marks the row for deletion until an update occurs.
I did have to improve the logic when iterating through the rows in the table in an effort not to include the deleted rows. This was achieved by:
for each row as datarow in myTable.rows
if not row.rowstate = datarowstate.deleted then
end if
next