ado.net数据操作全接触一

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1.1创建数据库连接（sqlserver）
1: <%@ Import Namespace="System.Data" %>
2: <%@ Import NameSpace="System.Data.SqlClient" %>
3: <%
4: Dim myConnection As SqlConnection
5: myConnection = New SqlConnection( "server=localhost;database=Pubs;uid=sa" )
6:
7: myConnection.Open()
8: %>
9: Connection Opened!
1.2创建数据库连接（access）
1: <%@ Import Namespace="System.Data" %>
2: <%@ Import NameSpace="System.Data.OleDb" %>
3: <%
4: Dim myConnection As OleDbConnection
5: myConnection = New OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA
http://aspfree.com/chapters/sams/graphics/ccc.gifSource=c:\authors.mdb" )
6:
7: myConnection.Open()
8: %>
9: Connection Opened!
2.1添加纪录（sqlserver） 1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.SqlClient" %>

3:

4: <%

5: Dim myConnection As SqlConnection

6: Dim myCommand As SqlCommand

7:

8: myConnection = New SqlConnection( "server=localhost;uid=sa;database=Pubs" )

9: myConnection.Open()

10: myCommand = New SqlCommand( "Insert testTable ( col1 ) http://aspfree.com/chapters/sams/graphics/ccc.gifValues ( 'Hello' )", myConnection )

11: myCommand.ExecuteNonQuery()

12: myConnection.Close()

13: %>

14: New Record Inserted!

15:

2.2添加纪录（access）

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.OleDb" %>

3:

4: <%

5: Dim myConnection As OleDbConnection

6: Dim myCommand As OleDbCommand

7:

8: myConnection = New OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA http://aspfree.com/chapters/sams/graphics/ccc.gifSource=c:authors.mdb" )

9: myConnection.Open()

10: myCommand = New OleDbCommand( "Insert INTO Authors ( Author ) Values http://aspfree.com/chapters/sams/graphics/ccc.gif( 'Simpson' )", myConnection )

11: myCommand.ExecuteNonQuery()

12: myConnection.Close()

13: %>

14: New Record Inserted!

15:

3.1更新数据（sqlserver）

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.SqlClient" %>

3:

4: <%

5: Dim myConnection As SqlConnection

6: Dim myCommand As SqlCommand

7:

8: myConnection = New SqlConnection( "server=localhost;uid=sa;database=Pubs" )

9: myConnection.Open()

10: myCommand = New SqlCommand( "UPDATE Authors SET LastName='Smith' http://aspfree.com/chapters/sams/graphics/ccc.gifWHERE LastName='Bennett'", myConnection )

11: myCommand.ExecuteNonQuery()

12: myConnection.Close()

13: %>

14: Record Updated!

15:

3.2更新数据（access）

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.OleDb" %>

3:

4: <%

5: Dim myConnection As OleDbConnection

6: Dim myCommand As OleDbCommand

7:

8: myConnection = New OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA http://aspfree.com/chapters/sams/graphics/ccc.gifSource=c:\authors.mdb" )

9: myConnection.Open()

10: myCommand = New OleDbCommand( "UPDATE Authors SET Author='Bennett' http://aspfree.com/chapters/sams/graphics/ccc.gifWHERE Author = 'Simpson'", myConnection )

11: myCommand.ExecuteNonQuery()

12: myConnection.Close

13: %>

14: Record Updated!15:

3.3更新数据中受影响的记录数

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.SqlClient" %>

3:

4: <%

5: Dim myConnection As SqlConnection

6: Dim myCommand As SqlCommand

7: Dim recordsAffected As Integer

8:

9: myConnection = New SqlConnection( "server=localhost;uid=sa;database=Pubs" )

10: myConnection.Open()

11: myCommand = New SqlCommand( "UPDATE testTable SET col1='hello' http://aspfree.com/chapters/sams/graphics/ccc.gifWHERE col1='fred'", myConnection )

12: recordsAffected = myCommand.ExecuteNonQuery()

13: Response.Write( "The UPDATE statement modified " & http://aspfree.com/chapters/sams/graphics/ccc.gifrecordsAffected.toString() & " records!" )

14: myConnection.Close

15: %>

16:

4.1删除数据（sqlserver）

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.SqlClient" %>

3:

4: <%

5: Dim myConnection As SqlConnection

6: Dim myCommand As SqlCommand

7:

8: myConnection = New SqlConnection( "server=localhost;uid=sa;database=Pubs" )

9: myConnection.Open()

10: myCommand = New SqlCommand( "DELETE testTable WHERE col1='fred'", myConnection )

11: myCommand.ExecuteNonQuery()

12: myConnection.Close()

13: %>

14: Record Deleted!

15:

4.2删除数据（access）

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.OleDb" %>

3:

4: <%

5: Dim myConnection As OleDbConnection

6: Dim myCommand As OleDbCommand

7:

8: myConnection = New OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA http://aspfree.com/chapters/sams/graphics/ccc.gifSource=c:\authors.mdb" )

9: myConnection.Open()

10: myCommand = New OleDbCommand( "DELETE FROM Authors http://aspfree.com/chapters/sams/graphics/ccc.gifWHERE Author = 'Simpson'", myConnection )

11: myCommand.ExecuteNonQuery()

12: myConnection.Close()

13: %>

14: Record Deleted!

15:

16:

4.3删除纪录中受影响的记录数

1: <%@ Import Namespace="System.Data" %>

2: <%@ Import NameSpace="System.Data.SqlClient" %>

3:

4: <%

5: Dim myConnection As SQLConnection

6: Dim myCommand As SQLCommand

7: Dim recordsAffected As Integer

8:

9: myConnection = New SqlConnection( "server=localhost;uid=sa;database=Pubs" )

10: myConnection.Open()

11: myCommand = New SqlCommand( "DELETE Authors2 http://aspfree.com/chapters/sams/graphics/ccc.gifWHERE LastName='Smith'", myConnection )

12: recordsAffected = myCommand.ExecuteNonQuery()

13: Response.Write( "The DELETE statement modified " http://aspfree.com/chapters/sams/graphics/ccc.gif& recordsAffected.toString() & " records!" )

14: myConnection.Close

15: %>

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