dotConnect for FreshBooks Documentation
Devart.Common Namespace / DbConnectionBase Class
Members Example

In This Topic
    DbConnectionBase Class
    In This Topic
    Represents an open connection to a server.
    Syntax
    'Declaration
     
    Public MustInherit Class DbConnectionBase 
       Inherits System.Data.Common.DbConnection
       Implements System.ComponentModel.IComponentSystem.Data.IDbConnectionSystem.IDisposable 
    Remarks
    The abstract DbConnectionBase class implements some of DbConnectionBase functionality that is data source-independent.
    Example
    The following sample demonstrates how using base classes helps to create data source independent code.
    public void PrintDept(DbConnectionBase myConnection) {
            DbCommandBase myCommand = (DbCommandBase)myConnection.CreateCommand();
            myCommand.CommandText = "SELECT Id, FirstName, LastName FROM Client";
            myConnection.Open();
            DbDataReader myReader = myCommand.ExecuteReader();
            try {
                    while (myReader.Read()) {
                            Console.WriteLine(myReader.GetString(0) + " " + 
                                    myReader.GetString(1) + " " + myReader.GetString(2));
                    }
            }
            finally {
                    myReader.Close();
                    myConnection.Close();
            }
    }
    Public Sub PrintDept(ByVal myConnection As DbConnectionBase)
            Dim myCommand As DbCommandBase = myConnection.CreateCommand()
            myCommand.CommandText = "SELECT Id, FirstName, LastName FROM Client"
            myConnection.Open()
            Dim myReader As DbDataReader = myCommand.ExecuteReader()
            Try
                    While myReader.Read()
                            Console.WriteLine(String.Concat(myReader.GetString(0), " ", _
                                    myReader.GetString(1), " ", myReader.GetString(2)))
                    End While
            Finally
                    myReader.Close()
                    myConnection.Close()
            End Try
    End Sub
    Inheritance Hierarchy

    System.Object
       System.MarshalByRefObject
          System.ComponentModel.Component
             System.Data.Common.DbConnection
                Devart.Common.DbConnectionBase
                   Devart.Data.SqlShimConnection

    Requirements

    Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

    See Also