Direction Property

DbParameter.Direction Property

Note: This property is new in the .NET Framework version 2.0.

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.Common
Assembly: System.Data (in

Public MustOverride Property Direction As ParameterDirection
Dim instance As DbParameter
Dim value As ParameterDirection

value = instance.Direction

instance.Direction = value
/** @property */
public abstract ParameterDirection get_Direction ()

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

public abstract function get Direction () : ParameterDirection

public abstract function set Direction (value : ParameterDirection)

Property Value

One of the ParameterDirection values. The default is Input.

Exception typeCondition


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

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

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

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0

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