SqlCeConnection 构造函数
初始化 SqlCeConnection 类的新实例。
命名空间: System.Data.SqlServerCe
程序集: System.Data.SqlServerCe(在 System.Data.SqlServerCe.dll 中)
语法
声明
<SecurityTreatAsSafeAttribute> _
<SecurityCriticalAttribute> _
Public Sub New
用法
Dim instance As New SqlCeConnection()
[SecurityTreatAsSafeAttribute]
[SecurityCriticalAttribute]
public SqlCeConnection()
[SecurityTreatAsSafeAttribute]
[SecurityCriticalAttribute]
public:
SqlCeConnection()
[<SecurityTreatAsSafeAttribute>]
[<SecurityCriticalAttribute>]
new : unit -> SqlCeConnection
public function SqlCeConnection()
注释
当创建 SqlCeConnection 的新实例时,读/写属性将会被设置为以下初始值,除非在 ConnectionString 属性中使用它们关联的关键字专门设置这些属性。
属性 |
初始值 |
---|---|
空字符串 ("") |
|
空字符串 ("") |
只能使用 ConnectionString 属性更改这些属性的值。
示例
下面的示例创建并打开一个 SqlCeConnection。
Dim conn As New SqlCeConnection()
' Set some connection string properties e.g.:
'
conn.ConnectionString = _
"Persist Security Info = False; Data Source = 'SalesData.sdf';" & _
"Password = '<password>'; File Mode = 'shared read'; " & _
"Max Database Size = 256; Max Buffer Size = 1024"
conn.Open()
' You can change the database while preserving
' the orignal connection options
'
conn.ChangeDatabase("SupportData.sdf")
SqlCeConnection conn = new SqlCeConnection();
// Set some connection string properties e.g.:
//
conn.ConnectionString =
"Persist Security Info = False; Data Source = 'SalesData.sdf';" +
"Password = '<password>'; File Mode = 'shared read'; " +
"Max Database Size = 256; Max Buffer Size = 1024";
conn.Open();
// You can change the database while preserving
// the orignal connection options
//
conn.ChangeDatabase("SupportData.sdf");