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OleDbParameter Constructor (String, OleDbType, Int32, ParameterDirection, Byte, Byte, String, DataRowVersion, Boolean, 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,
	byte precision,
	byte scale,
	string sourceColumn,
	DataRowVersion sourceVersion,
	bool sourceColumnNullMapping,
	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.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.Boolean
true if the source column is nullable; false if it is not.
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");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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