技术资料 > .Net专区 > 数据库应用 : ado.net数据操作全接触一（insert,update,delete）

ado.net数据操作全接触一（insert,update,delete）

March 25,2004

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.Close15: %>16: