Insert/update Optimization

Mar 19, 2008

I am not sure if this is the best forum but i could not find anything perfect so lets just try...

Problem:
I have a GUI that has a bunch of data. users can insert or edit data. once they hit save i have a method that goes row by row and then queries the database to see if the row exists in the database. so that is 1 roundtrip. then if it is not, the code spits out an insert statement otherwise an update statement. so that is 2nd roundtrip. This is the best i have come up with but i feel its too slow.

In some other applications i have datagridviews that allow users to insert/edit data and the save is done by using the .net api tableadapter.update(datatable). I don't know what this api is doing under it but it seems like this is much faster. Unfortunately i cannot go this route. Does anyone have any suggestions on how to optimize the problem i have described in the paragraph above?

Mucho Gracias !



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Appreicate!

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Try
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Dim userid As Integer = CInt(hfID.Value)
Dim guests As Integer = CInt(GridView1.Rows(GridView1.EditIndex).Cells(4).ToString)
Dim attending As Boolean = CBool(GridView1.Rows(GridView1.EditIndex).Cells(5).ToString)
Dim extra As String = Server.HtmlEncode(GridView1.Rows(GridView1.EditIndex).Cells(6).ToString)
InsertRecord(eventid, userid, guests, attending, extra)
Catch ex As Exception
End Try
End Sub






Function InsertRecord(ByVal eventID As Integer, ByVal userID As Integer, ByVal guests As Integer, ByVal attending As Boolean, ByVal extra As String) As Integer
Dim connectionString As String = "server='localhost'; trusted_connection=true; Database='AFRA'"
Dim sqlConnection As System.Data.SqlClient.SqlConnection = New System.Data.SqlClient.SqlConnection(connectionString)
Dim queryString As String = "INSERT INTO [AFRAAttendance] ([EventID], [UserID], [Guests], [Attending], [Extra]) VALUES (@EventID, @UserID, @Guests, @Attending, @Extra)"
Dim sqlCommand As System.Data.SqlClient.SqlCommand = New System.Data.SqlClient.SqlCommand(queryString, sqlConnection)
sqlCommand.Parameters.Add("@EventID", System.Data.SqlDbType.Int).Value = eventID
sqlCommand.Parameters.Add("@UserID", System.Data.SqlDbType.Int).Value = userID
sqlCommand.Parameters.Add("@Guests", System.Data.SqlDbType.Int).Value = guests
sqlCommand.Parameters.Add("@Attending", System.Data.SqlDbType.Bit).Value = attending
sqlCommand.Parameters.Add("@Extra", System.Data.SqlDbType.VarChar).Value = extra
Dim rowsAffected As Integer = 0
sqlConnection.Open()
Try
rowsAffected = sqlCommand.ExecuteNonQuery
Finally
sqlConnection.Close()
End Try
Return rowsAffected
End FunctionThank you

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