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數據庫連接字在Web.config里的用法
發布時間:2006-05-15 瀏覽:2043次
  

在asp.net中的WEB程序的設置中我們必須用到Web.config來存儲數據庫連接字.事實上這是個

很好的做法,因為可以省去我們很多的麻煩還可以幫助我們避免不必要的錯位,是的很多情況下

我就是這樣做.它通過xml來記錄這些信息.具體的是在<appsettings>....</appsettings>這個

標記中來記錄的.這里請看一個oracle的例子如下:

<appsettings>
<add key="ORACLEConnectionString" value="Provider=OraOLEDB.Oracle.1;
Persist Security Info=False;Password=blah;User ID=greg;Data Source=sph;" />
<add key="SQLConnectionString" value="data source=SQL1;initial catalog=ID_V;
integrated security=SSPI;persist security info=False;workstation id=TH03D374;
packet size=4096"/>
<appSettings>

而在你的應用程序中你只要這樣寫,就可以了,如下:

string conn = ConfigurationSettings.AppSettings["ORACLEConnectionString"];
OleDbConnection myConnection = new OleDbConnection(conn);

很輕松是嗎?不必每次都輸入同樣的連接字,也不要記住那些討厭的信息了,只需要起一個好記的

名字就可以.

好了下面我在來給出其他的一些連接字

mysql的連接字:
ConnectionString = "Data Source=localhost;" +
"Database=mySQLDatabase;" +
"User ID=myUsername;" +
"Password=myPassword;" +
"Command Logging=false";
OLE DB的:
IBM AS/400 OLE DB 的

" VB.NET
Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String = _
"Provider=IBMDA400.DataSource.1;" & _
"Data source=myAS400DbName;" & _
"User Id=myUsername;" & _
"Password=myPassword"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

jet OLE DB 的

" VB.NET
Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String = _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:\myPath\myJet.mdb;" & _
"User ID=Admin;" & _
"Password="
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

oracle OLE DB 的

" VB.NET
Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String = _
"Provider=OraOLEDB.Oracle;" & _
"Data Source=MyOracleDB;" & _
"User ID=myUsername;" & _
"Password=myPassword"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

sql Server OLE DB 的

" VB.NET
Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String = _
"Provider=sqloledb;" & _
"Data Source=myServerName;" & _
"Initial Catalog=myDatabaseName;" & _
"User Id=myUsername;" & _
"Password=myPassword"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

sybase ASE OLE DB 的

" VB.NET
Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String = _
"Provider=Sybase ASE OLE DB Provider;" & _
"Data Source=MyDataSourceName;" & _
"Server Name=MyServerName;" & _
"Database=MyDatabaseName;" & _
"User ID=myUsername;" & _
"Password=myPassword"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

sql Server在System.Data.SqlClient

sqlconnection oSQLConn = new SqlConnection();
oSQLConn.ConnectionString = "Data Source=(local);" +
"Initial Catalog=mySQLServerDBName;" +
"Integrated Security=SSPI";
oSQLConn.Open();
 

 
 
    
 
 
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