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SqlCeConnection 建構函式

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初始化 SqlCeConnection 類別的新執行個體。

命名空間：  System.Data.SqlServerCe
組件：  System.Data.SqlServerCe (在 System.Data.SqlServerCe.dll 中)

語法

'宣告
<SecurityTreatAsSafeAttribute> _
<SecurityCriticalAttribute> _
Public Sub New
'用途

Dim instance As New SqlCeConnection()

[SecurityTreatAsSafeAttribute]
[SecurityCriticalAttribute]
public SqlCeConnection()

[SecurityTreatAsSafeAttribute]
[SecurityCriticalAttribute]
public:
SqlCeConnection()

[<SecurityTreatAsSafeAttribute>]
[<SecurityCriticalAttribute>]
new : unit -> SqlCeConnection

public function SqlCeConnection()

備註

在建立 SqlCeConnection 的新執行個體時，讀取/寫入屬性會設定為下列的初始值，除非藉由使用 ConnectionString 屬性中與其相關的關鍵字特別加以設定。

屬性

初始值

ConnectionString

空字串 ("")

DataSource

空字串 ("")

您只能藉由使用 ConnectionString 屬性來變更這些屬性的值。

範例

下列範例會建立並開啟 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");

請參閱

參考

SqlCeConnection 類別

SqlCeConnection 多載

System.Data.SqlServerCe 命名空間