Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.VisualBasic
Public Class DataReaderSample
Public Shared Sub Main()
Dim sqlConn As SqlConnection = New SqlConnection
("data source=DBServer;initial catalog=Northwind;
persist security info=True;user id=sa")
Dim sqlCmd As SqlCommand = sqlConn.CreateCommand()
sqlCmd.CommandText = "SELECT EmployeeID, LastName , FirstName FROM Employees"
sqlConn.Open()
Dim sqlReader As SqlDataReader = sqlCmd.ExecuteReader()
Dim intFor As Int32
For intFor = 0 To sqlReader.FieldCount - 1
Console.Write(String.Format("{0,-20:G}", sqlReader.GetName(intFor)))
Next
Console.WriteLine()
Do While sqlReader.Read()
Console.WriteLine(String.Format("{0,-20:G}{1,-20:G}{2,-20:G}",
sqlReader.GetInt32(0),
sqlReader.GetString(1), sqlReader.GetString(2)))
Loop
sqlReader.Close()
sqlConn.Close()
Console.Read()
End Sub
End Class
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.VisualBasic
Public Class DataReaderSample
Public Shared Sub Main()
Dim sqlConn As SqlConnection = New SqlConnection
("data source= DBServer;initial catalog=Northwind;
persist security info=True;user id=sa")
Dim sqlCmd As SqlCommand = sqlConn.CreateCommand()
sqlCmd.CommandText = "SELECT EmployeeID, LastName ,
FirstName FROM Employees;SELECT CategoryID,
CategoryName, Description FROM Categories"
sqlConn.Open()
Dim sqlReader As SqlDataReader = sqlCmd.ExecuteReader()
Dim intFor As Int32
Dim blnNextResult As Boolean = False
Do While Not blnNextResult
For intFor = 0 To sqlReader.FieldCount - 1
Console.Write(String.Format("{0,-20:G}", sqlReader.GetName(intFor)))
Next
Console.WriteLine()
Do While sqlReader.Read()
Console.WriteLine(String.Format("{0,-20:G}{1,-20:G}{2,-20:G}",
sqlReader.GetInt32(0), sqlReader.GetString(1),
sqlReader.GetString(2)))
Loop
Console.WriteLine()
blnNextResult = Not sqlReader.NextResult()
Loop
sqlReader.Close()
sqlConn.Close()
Console.Read()
End Sub
End Class
