开发学院WEB开发ASP ASP.NET连SQL7接口源代码 阅读

ASP.NET连SQL7接口源代码

 2001-05-08 10:19:32 来源:WEB开发网   
核心提示:The following example shows what a simple ADO.NET application that connects to the Northwind database and returns a list of Categories would look like. The exam
The following example shows what a simple ADO.NET application that connects to the Northwind database and returns a list of Categories would look like. The example writes the output to the console, or command PRompt.

The following example shows what a simple ADO.NET application that connects to the Northwind database and returns a list of Categories. The example writes the output to the console, or command prompt.

SqlClient
[Visual Basic]
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.VisualBasic

Public Class Sample

 Public Shared Sub Main()
  Dim nwindConn As SqlConnection = New SqlConnection("Data Source=localhost;" & _
                            "User Id=sa;PassWord=pwd;Initial Catalog=northwind")

  Dim catCMD As SqlCommand = nwindConn.CreateCommand()
  catCMD.CommandText = "SELECT CategoryID, CategoryName FROM Categories"

  nwindConn.Open()

  Dim myReader As SqlDataReader = catCMD.ExecuteReader()

  Do While myReader.Read()
   Console.WriteLine(vbTab & "{0}" & vbTab & "{1}", myReader.GetInt32(0), myReader.GetString(1))
  Loop

  myReader.Close()
  nwindConn.Close()
 End Sub
End Class
[C#]
using System;
using System.Data;
using System.Data.SqlClient;

class Sample
{
 public static void Main()
 {
  SqlConnection nwindConn = new SqlConnection("Data Source=localhost;User Id=sa;Password=pwd;Initial Catalog=northwind");

  SqlCommand catCMD = nwindConn.CreateCommand();
  catCMD.CommandText = "SELECT CategoryID, CategoryName FROM Categories";

  nwindConn.Open();

  SqlDataReader myReader = catCMD.ExecuteReader();

  while (myReader.Read())
  {
   Console.WriteLine("\t{0}\t{1}", myReader.GetInt32(0), myReader.GetString(1));
  }

  myReader.Close();
  nwindConn.Close();
 }
}
OleDb
[Visual Basic]
Imports System
Imports System.Data
Imports System.Data.OleDb
Imports Microsoft.VisualBasic

Public Class Sample

 Public Shared Sub Main()
  Dim nwindConn As OleDbConnection = New OleDbConnection("Provider=SQLOLEDB;Data Source=localhost;" & _
                              "User Id=sa;Password=pwd;Initial Catalog=northwind")

  Dim catCMD As OleDbCommand = nwindConn.CreateCommand()
  catCMD.CommandText = "SELECT CategoryID, CategoryName FROM Categories"

  nwindConn.Open()

  Dim myReader As OleDbDataReader = catCMD.ExecuteReader()

  Do While myReader.Read()
   Console.WriteLine(vbTab & "{0}" & vbTab & "{1}", myReader.GetInt32(0), myReader.GetString(1))
  Loop

  myReader.Close()
  nwindConn.Close()
 End Sub
End Class
[C#]
using System;
using System.Data;
using System.Data.OleDb;

class Sample
{
 public static void Main()
 {
  OleDbConnection nwindConn = new OleDbConnection("Provider=SQLOLEDB;Data Source=localhost;User Id=sa;Password=pwd;Initial Catalog=northwind");

  OleDbCommand catCMD = nwindConn.CreateCommand();
  catCMD.CommandText = "SELECT CategoryID, CategoryName FROM Categories";

  nwindConn.Open();

  OleDbDataReader myReader = catCMD.ExecuteReader();

  while (myReader.Read())
  {
   Console.WriteLine("\t{0}\t{1}", myReader.GetInt32(0), myReader.GetString(1));
  }

  myReader.Close();
  nwindConn.Close();
 }
}

Tags:ASP NET SQL

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