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OleDbCommand.CommandType Property

Gets or sets a value that indicates how the CommandText property is interpreted.

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

public override CommandType CommandType { get; set; 
/** @property */
public CommandType get_CommandType ()

/** @property */
public void set_CommandType (CommandType value)

public override function get CommandType () : CommandType

public override function set CommandType (value : CommandType)

Property Value

One of the CommandType values. The default is Text.

Exception typeCondition


The value was not a valid CommandType.

When you set the CommandType property to StoredProcedure, you should set the CommandText property to the name of the stored procedure. The command executes this stored procedure when you call one of the Execute methods.

The Connection, CommandType and CommandText properties cannot be set if the current connection is performing an execute or fetch operation.

The OLE DB .NET Provider does not support named parameters for passing parameters to an SQL statement or a stored procedure called by an OleDbCommand when CommandType is set to Text. In this case, the question mark (?) placeholder must be used. For example:

SELECT * FROM Customers WHERE CustomerID = ?

Therefore, the order in which OleDbParameter objects are added to the OleDbParameterCollection must directly correspond to the position of the question mark placeholder for the parameter. For more information, see Using Stored Procedures with a Command.

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0