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OdbcParameter.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.Odbc
Assembly:  System.Data (in System.Data.dll)

public override ParameterDirection Direction { get; set; }

Property Value

Type: System.Data.ParameterDirection
One of the ParameterDirection values. The default is Input.

Implements

IDataParameter.Direction
IDataParameter.Direction

ExceptionCondition
ArgumentException

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

If the ParameterDirection is Output, and execution of the associated OdbcCommand does not return a value, the OdbcParameter will contain a null value. Null values are handled using the DBNull class.

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

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

public void CreateMyProc(OdbcConnection connection) 
{
   OdbcCommand command = connection.CreateCommand();
   command.CommandText = "{ call MyProc(?,?,?) }";
   command.Parameters.Add("", OdbcType.Int).Value = 1;
   command.Parameters.Add("", OdbcType.Decimal).Value = 2;
   command.Parameters.Add("", OdbcType.Decimal).Value = 3;
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1

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