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Open Method

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)

Syntax

'Declaration
Public Overrides Sub Open
'Usage
Dim instance As SqlCeConnection

instance.Open()
public override void Open()
public:
virtual void Open() override
abstract Open : unit -> unit 
override Open : unit -> unit 
public override function Open()

Implements

IDbConnection. . :: . .Open() () () ()

Exceptions

Exception Condition
InvalidOperationException

The connection is already open.

SqlCeException

A connection-level error occurred while opening the connection.

Remarks

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.

Examples

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();
}

See Also

Reference

SqlCeConnection Class

SqlCeConnection Members

System.Data.SqlServerCe Namespace

Close