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OleDbParameter Constructor (String, OleDbType, Int32, ParameterDirection, Boolean, Byte, Byte, String, DataRowVersion, Object)

Initializes a new instance of the OleDbParameter class that uses the parameter name, data type, length, source column name, parameter direction, numeric precision, and other properties.

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

public OleDbParameter(
	string parameterName,
	OleDbType dbType,
	int size,
	ParameterDirection direction,
	bool isNullable,
	byte precision,
	byte scale,
	string srcColumn,
	DataRowVersion srcVersion,
	Object value


Type: System.String

The name of the parameter.

Type: System.Data.OleDb.OleDbType

One of the OleDbType values.

Type: System.Int32

The length of the parameter.

Type: System.Data.ParameterDirection

One of the ParameterDirection values.

Type: System.Boolean

true if the value of the field can be null; otherwise false.

Type: System.Byte

The total number of digits to the left and right of the decimal point to which Value is resolved.

Type: System.Byte

The total number of decimal places to which Value is resolved.

Type: System.String

The name of the source column.

Type: System.Data.DataRowVersion

One of the DataRowVersion values.

Type: System.Object

An Object that is the value of the OleDbParameter.


The value supplied in the dataType parameter is an invalid back-end data type.

The Size and Precision are inferred from the value of the dataType parameter if they are not explicitly set in the size and precision parameters.

The following example creates an OleDbParameter and displays the ParameterName.

public void CreateOleDbParameter()
    OleDbParameter parameter = new OleDbParameter(
        "Description", OleDbType.VarChar, 11, 
        ParameterDirection.Output, true, 0, 0, "Description",
        DataRowVersion.Current, "garden hose");

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, 1.0