Mega Code Archive
Get number of columns in SqlDataReader
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Imports System
Imports System.Data
Imports System.Data.SqlClient
public class MainClass
Shared Sub Main()
Dim thisConnection As New SqlConnection("server=(local)\SQLEXPRESS;" & _
"integrated security=sspi;database=MyDatabase")
'Sql Query 1
Dim sql As String ="SELECT FirstName, LastName FROM Employee; "
'Create Command object
Dim thisCommand As New SqlCommand _
(sql, thisConnection)
Try
' Open Connection
thisConnection.Open()
Console.WriteLine("Connection Opened")
' Execute Query
Dim thisReader As SqlDataReader = thisCommand.ExecuteReader()
' Get number of columns
Console.WriteLine()
Console.WriteLine("Number of columns in a row: {0}", _
thisReader.FieldCount)
'Close DataReader
thisReader.Close()
Catch ex As SqlException
' Display error
Console.WriteLine("Error: " & ex.ToString())
Finally
' Close Connection
thisConnection.Close()
Console.WriteLine("Connection Closed")
End Try
End Sub
End Class
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