OleDbParameter.Direction Property

Reference

Definition

Namespace:: System.Data.OleDb

Assembly:: System.Data.OleDb.dll

Assembly:: System.Data.dll

Package:: System.Data.OleDb v10.0.0-preview.1.25080.5

Source:: DbParameterHelper.cs

Source:: DbParameterHelper.cs

Source:: DbParameterHelper.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

ParameterDirection

One of the ParameterDirection values. The default is Input.

Implements

Direction

Attributes: DataSysDescriptionAttribute

Exceptions

ArgumentException

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

Product	Versions
.NET	8 (package-provided), 9 (package-provided), 10 (package-provided)
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0 (package-provided)

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