Motorcycle Theory Test

I just took and passed my Motorcycle theory test, this enables me to take my practical test in the next two years. It is a 2 part test first is 35 multiple choice questions which are straightforward if you read the bock “The official theory test for motorcycles”. The second part is a hazzard perception test, you watch a series of 14 video clips and are expected to click the mouse as you spot potential and actual hazzards. The second part is more natural if you have been driving a car for a few years.


The test is all done on a computer and the input is via touchscreen and mouse, the software is well written and the UI is intuitive, not what I was expecting. You can complete both parts of the test in less than 30 mins or if you take the full 40 mins for part one it would take just over an hour to complete.


All I have to do now is tell my wife I’m going to sit my pratical test, she has been less than encouraging when I have mentioned it in the past 🙂


 

Using Typed Datasets in VB.Net

When I first started using Typed Datasets I fell into a couple of pitfalls that took me a day to figure out. To prevent some poor soul from suffering like I did here are some notes.

I work almost exclusivly with Stored Procedures, and i’m assuming you already know how to create a typed dataset. I don’t like ‘myDataSet’ type examples so I have create a real world one, this dataset returns a result set with all the addresses associated with a customers proposal so is inventively called ProposalAddresses.

VB.Net 2003 Example Code:


'Declare an instance of the typed dataset you have already created
Dim dsProposalAddress As New ProposalAddresses

'Create a command to pass to the Get SqlDataAdapter function
'We need a SqlDataAdapter in order to populate our Typed Dataset,
'we need a SqlCommand object to tell our SqlDataAdapter where to
'get its data and what parameters to pass to the database.
Dim Command As New SqlClient.SqlCommand("sp_AddressSummary")
'Set the commands properties
Command.CommandType = CommandType.StoredProcedure
'Okay so you will have to create your own SQLConnection Object before reaching this point.
Command.Connection = MyConn
'If your stored procedure takes any parameters create them here.
Dim Proposal As New SqlClient.SqlParameter
Proposal.ParameterName = "@ProposalID"
Proposal.SqlDbType = SqlDbType.Int
Proposal.Value = ProposalID
'Attach your parameter to your command
Command.Parameters.Add(Proposal)
'===============================
'This line creates your SqlDataAdapter using the SqlCommand Object you have just created.
Dim daProposalAddresses As New SqlDataAdapter(Command)

'!! IMPORTANT: With Typed Datasets you must specify
'the additional parameter TableName when calling .Fill or Table(0)
'will not contain any rows and your DS members will not hold any data
daProposalAddresses.Fill(dsProposalAddress, dsProposalAddress.Tables(0).TableName)

'== Test what has been returned in your dataset ==
'This line returns from Row(0) the value in the FullAddress Column
MsgBox(dsProposalAddress.sp_AddressSummary(0).FullAddress)
'This line returns from Row(1) the value in the FullAddress Column
MsgBox(dsProposalAddress.sp_AddressSummary(1).FullAddress)


This code is to demonstrate how to retrieve data from a typed dataset, if you are going to be doing a lot of data access in your application you should consider creating a class that will hide away the above routines and reduce the amount of code you need to write.