OleDbParameter.Direction OleDbParameter.Direction OleDbParameter.Direction OleDbParameter.Direction Property

Definition

Gets or sets a value that indicates whether the parameter is input-only, output-only, bidirectional, or a stored procedure return-value parameter.

public:
 property System::Data::ParameterDirection Direction { System::Data::ParameterDirection get(); void set(System::Data::ParameterDirection value); };
[System.Data.DataSysDescription("DataParameter_Direction")]
public System.Data.ParameterDirection Direction { get; set; }
member this.Direction : System.Data.ParameterDirection with get, set
Public Property Direction As ParameterDirection

Property Value

Implements

Exceptions

The property was not set to one of the valid ParameterDirection values.

Examples

The following example creates an OleDbParameter and sets some of its properties.

Public Sub CreateOleDbParameter()  
    Dim parameter As New OleDbParameter("Description", OleDbType.VarChar, 88)  
    parameter.Direction = ParameterDirection.Output  
End Sub 'CreateOleDbParameter  
public void CreateOleDbParameter()   
 {  
    OleDbParameter parameter = new OleDbParameter("Description", OleDbType.VarChar, 88);  
    parameter.Direction = ParameterDirection.Output;  
 }  

Remarks

If the ParameterDirection is output, and execution of the associated OleDbCommand does not return a value, the OleDbParameter contains a null value.

Output, InputOut, and ReturnValue parameters returned by calling ExecuteReader cannot be accessed until you call Close or Dispose on the OleDbDataReader.

Applies to

See also