070-561 Free Dumps Study Materials
Question 3: You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET. The
application connects to a Microsoft SQL Server 2005 database.
You write the following code segment.
Dim queryString As String = "Select Name, Age from dbo.Table_1"
Dim command As New _SqlCommand(queryString, DirectCast(connection, SqlConnection))
You need to get the value that is contained in the first column of the first row of the result set returned by
the query.
Which code segment should you use?
A. Dim value As Object = command.ExecuteScalar()
Dim requiredValue As String = value.ToString()
B. Dim value As Integer = command.ExecuteNonQuery()
Dim requiredValue As String = value.ToString()
C. Dim value As SqlDataReader = _command.ExecuteReader(CommandBehavior.SingleRow)
Dim requiredValue As String = value(0).ToString()
D. Dim value As SqlDataReader = _command.ExecuteReader(CommandBehavior.SingleRow)
Dim requiredValue As String = value(1).ToString()
Correct Answer: A