DOT NET Interview Questions - DotNetSpider

First below is the code , after the code i have given the explanation for it.For this sample
we will also need a SQL Table setup which i have imported using the DTS wizard.
Private Sub LoadData()
‘ note :- with and end with makes your code more readable
Dim strConnectionString As String
Dim objConnection As New SqlConnection
Dim objCommand As New SqlCommand
Dim objReader As SqlDataReader
Try
‘ this gets the connectionstring from the app.config
file.
‘ note if this gives error see where the MDB file is
stored in your pc and point to that
strConnectionString =
AppSettings.Item(“ConnectionString”)
‘ take the connectiostring and initialize the connection
object
With objConnection
.ConnectionString = strConnectionString
.Open()
End With
objCommand = New SqlCommand(“Select FirstName from
Employees”)
With objCommand
.Connection = objConnection
objReader = .ExecuteReader()
End With
‘ looping through the reader to fill the list box
Do While objReader.Read()
lstData.Items.Add(objReader.Item(“FirstName”))
Loop
Catch ex As Exception
Throw ex
Finally
objConnection.Close()
End Try
* What are your negative points ? (Careful guy’s)
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