SqlCeConnection 建構函式 (String)
使用指定的連接字串初始化 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
Public Sub New ( _
connectionString As String _
)
'用途
Dim connectionString As String
Dim instance As New SqlCeConnection(connectionString)
public SqlCeConnection(
string connectionString
)
public:
SqlCeConnection(
String^ connectionString
)
new :
connectionString:string -> SqlCeConnection
public function SqlCeConnection(
connectionString : String
)
參數
- connectionString
型別:System.String
用來開啟資料庫的連接。
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 ("") |
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 SqlCeConnection = Nothing
Try
conn = New SqlCeConnection("Data Source = MyDatabase.sdf; Password ='<pwd>'")
conn.Open()
Dim cmd As SqlCeCommand = conn.CreateCommand()
cmd.CommandText = "INSERT INTO Customers ([Customer ID], [Company Name]) Values('NWIND', 'Northwind Traders')"
cmd.ExecuteNonQuery()
Finally
conn.Close()
End Try
SqlCeConnection conn = null;
try
{
conn = new SqlCeConnection("Data Source = MyDatabase.sdf; Password ='<pwd>'");
conn.Open();
SqlCeCommand cmd = conn.CreateCommand();
cmd.CommandText = "INSERT INTO Customers ([Customer ID], [Company Name]) Values('NWIND', 'Northwind Traders')";
cmd.ExecuteNonQuery();
}
finally
{
conn.Close();
}