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OleDbParameter.Direction Property

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

Namespace: System.Data.OleDb
Assembly: System.Data (in system.data.dll)

public override ParameterDirection Direction { get; set; }
/** @property */
public ParameterDirection get_Direction ()

/** @property */
public void set_Direction (ParameterDirection value)

public override function get Direction () : ParameterDirection

public override function set Direction (value : ParameterDirection)

Not applicable.

Property Value

One of the ParameterDirection values. The default is Input.
Exception typeCondition

ArgumentException

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

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.

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

public void CreateOleDbParameter() 
 {
    OleDbParameter parameter = new OleDbParameter("Description", OleDbType.VarChar, 88);
    parameter.Direction = ParameterDirection.Output;
 }

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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