OleDbParameter.Direction Property
Definition
Important
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Gets or sets a value that indicates whether the parameter is input-only, output-only, bidirectional, or a stored procedure return-value parameter.
public:
virtual property System::Data::ParameterDirection Direction { System::Data::ParameterDirection get(); void set(System::Data::ParameterDirection value); };
public:
property System::Data::ParameterDirection Direction { System::Data::ParameterDirection get(); void set(System::Data::ParameterDirection value); };
public override System.Data.ParameterDirection Direction { get; set; }
[System.Data.DataSysDescription("DataParameter_Direction")]
public System.Data.ParameterDirection Direction { get; set; }
member this.Direction : System.Data.ParameterDirection with get, set
[<System.Data.DataSysDescription("DataParameter_Direction")>]
member this.Direction : System.Data.ParameterDirection with get, set
Public Overrides Property Direction As ParameterDirection
Public Property Direction As ParameterDirection
Property Value
One of the ParameterDirection values. The default is Input
.
Implements
- Attributes
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
.NET
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