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OleDbParameter.OleDbParameter(String, OleDbType, Int32, String) Constructor

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

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

public OleDbParameter (
	string name,
	OleDbType dataType,
	int size,
	string srcColumn
public OleDbParameter (
	String name, 
	OleDbType dataType, 
	int size, 
	String srcColumn
public function OleDbParameter (
	name : String, 
	dataType : OleDbType, 
	size : int, 
	srcColumn : String
Not applicable.



The name of the parameter to map.


One of the OleDbType values.


The length of the parameter.


The name of the source column.

Exception typeCondition


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

The Size is inferred from the value of the dataType parameter if it is not explicitly set in the size parameter.

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

public void CreateOleDbParameter() 
   OleDbParameter parameter = new OleDbParameter(
   parameter.Direction = ParameterDirection.Output;

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0