Note
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Opens a database connection with the property settings specified by the ConnectionString.
Namespace: System.Data.SqlServerCe
Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)
'Declaration
Public Overrides Sub Open
'Usage
Dim instance As SqlCeConnection
instance.Open
public override void Open ()
public:
virtual void Open () override
public void Open ()
public override function Open ()
Not applicable.
Exception type | Condition |
---|---|
The connection is already open. |
|
A connection-level error occurred while opening the connection. |
This method establishes a new connection to the data source.
Note
If the SqlCeConnection goes out of scope, it is not closed. You must explicitly close the connection by calling Close or Dispose.
The following example creates a SqlCeConnection, opens it, executes a query, and then closes the connection.
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();
}
Windows CE, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows XP Professional x64 Edition, Windows XP SP2
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.
Supported in: 3.0
Supported in: 2.0, 1.0
SqlCeConnection Class
SqlCeConnection Members
System.Data.SqlServerCe Namespace
Close