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SqlParameter.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.SqlClient
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)

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 SqlCommand does not return a value, the SqlParameter contains a null value.

Output, InputOut, and ReturnValue parameters returned by calling ExecuteReader cannot be accessed until you close the SqlDataReader.

The following example creates a SqlParameter and sets some of its properties.

static void CreateSqlParameterOutput()
{
    SqlParameter parameter = new SqlParameter("Description", SqlDbType.VarChar, 88);
    parameter.Direction = ParameterDirection.Output;


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, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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