OracleCommand.CommandType Property

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

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

Public Overrides Property CommandType As CommandType
Dim instance As OracleCommand
Dim value As CommandType

value = instance.CommandType

instance.CommandType = value
/** @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 the CommandType property is set to StoredProcedure, you should set the CommandText property to the full Oracle call syntax. The command then executes this stored procedure when you call one of the Execute methods (for example, ExecuteReader or ExecuteNonQuery).

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

The .NET Framework Data Provider for Oracle does not support the question mark (?) placeholder for passing parameters to an SQL statement called by an OracleCommand of CommandType.Text. In this case, named parameters must be used. For example:

SELECT * FROM Customers WHERE CustomerID = :pCustomerID

When using named parameters in an SQL statement called by an OracleCommand of CommandType.Text, you must precede the parameter name with a colon (:). However, in a stored procedure, or when referring to a named parameter elsewhere in your code (for example, when adding OracleParameter objects to the Parameters property), do not precede the named parameter with a colon (:). The .NET Framework Data Provider for Oracle supplies the colon automatically.

The following example creates an instance of a derived class OracleCommand and sets some of its properties.

Public Sub CreateOracleCommand()
    Dim command As New OracleCommand()
    command.CommandText = "SELECT * FROM Emp ORDER BY EmpNo"
    command.CommandType = CommandType.Text
End Sub

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