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OleDbCommand.ExecuteReader Method

Sends the CommandText to the Connection and builds an OleDbDataReader.

Overload List

Sends the CommandText to the Connection and builds an OleDbDataReader.

[Visual Basic] Overloads Public Function ExecuteReader() As OleDbDataReader
[C#] public OleDbDataReader ExecuteReader();
[C++] public: OleDbDataReader* ExecuteReader();
[JScript] public function ExecuteReader() : OleDbDataReader;

Sends the CommandText to the Connection, and builds an OleDbDataReader using one of the CommandBehavior values.

[Visual Basic] Overloads Public Function ExecuteReader(CommandBehavior) As OleDbDataReader
[C#] public OleDbDataReader ExecuteReader(CommandBehavior);
[C++] public: OleDbDataReader* ExecuteReader(CommandBehavior);
[JScript] public function ExecuteReader(CommandBehavior) : OleDbDataReader;

Example

[Visual Basic, C#, C++] The following example creates an OleDbCommand, then executes it by passing a string that is a Transact-SQL SELECT statement, and a string to use to connect to the data source. CommandBehavior is set to CloseConnection.

[Visual Basic, C#, C++] Note   This example shows how to use one of the overloaded versions of ExecuteReader. For other examples that might be available, see the individual overload topics.
[Visual Basic] 
Public Sub CreateMyOleDbDataReader(mySelectQuery As String, _
myConnectionString As String)
    Dim myConnection As New OleDbConnection(myConnectionString)
    Dim myCommand As New OleDbCommand(mySelectQuery, myConnection)
    myConnection.Open()
    Dim myReader As OleDbDataReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection)
    While myReader.Read()
        Console.WriteLine(myReader.GetString(0))
    End While
    myReader.Close()
    'Implicitly closes the connection because CommandBehavior.CloseConnection was specified.
 End Sub


[C#] 
public void CreateMyOleDbDataReader(string mySelectQuery,string myConnectionString) 
{
   OleDbConnection myConnection = new OleDbConnection(myConnectionString);
   OleDbCommand myCommand = new OleDbCommand(mySelectQuery, myConnection);
   myConnection.Open();
   OleDbDataReader myReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection);
   while(myReader.Read()) 
   {
      Console.WriteLine(myReader.GetString(0));
   }
   myReader.Close();
   //Implicitly closes the connection because CommandBehavior.CloseConnection was specified.
}


[C++] 
public:
    void CreateMyOleDbDataReader(String* mySelectQuery, String* myConnectionString)
    {
        OleDbConnection* myConnection = new OleDbConnection(myConnectionString);
        OleDbCommand* myCommand = new OleDbCommand(mySelectQuery, myConnection);
        myConnection->Open();
        OleDbDataReader* myReader = myCommand->ExecuteReader(CommandBehavior::CloseConnection);
        while(myReader->Read())
        {
            Console::WriteLine(myReader->GetString(0));
        }
        myReader->Close();
        //Implicitly closes the connection because CommandBehavior::CloseConnection was specified.
    };

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

See Also

OleDbCommand Class | OleDbCommand Members | System.Data.OleDb Namespace

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