DataCommand.Prepare Method (String, DataCommandType, array<IVsDataParameter )

Prepares the specified command on the data source to be executed; the command can then be executed multiple times, with varying parameters.

Namespace:  Microsoft.VisualStudio.Data.Framework
Assembly:  Microsoft.VisualStudio.Data.Framework (in Microsoft.VisualStudio.Data.Framework.dll)

Syntax

'Declaration
Public Function Prepare ( _
    command As String, _
    commandType As DataCommandType, _
    parameters As IVsDataParameter() _
) As String

public string Prepare(
    string command,
    DataCommandType commandType,
    IVsDataParameter[] parameters
)

public:
virtual String^ Prepare(
    String^ command, 
    DataCommandType commandType, 
    array<IVsDataParameter^>^ parameters
) sealed

abstract Prepare : 
        command:string * 
        commandType:DataCommandType * 
        parameters:IVsDataParameter[] -> string  
override Prepare : 
        command:string * 
        commandType:DataCommandType * 
        parameters:IVsDataParameter[] -> string

public final function Prepare(
    command : String, 
    commandType : DataCommandType, 
    parameters : IVsDataParameter[]
) : String

Parameters

• command
  Type: System.String

  A command to execute that is specific to a data source.

• commandType
  Type: Microsoft.VisualStudio.Data.Services.SupportEntities.DataCommandType

  The type of the command that specifies how to interpret the contents of the command parameter. The command type could either be a value from the DataCommandType enumeration or a custom command type defined by a provider, which can be passed in by forcing a cast from an integer to the DataCommandType enumeration.

• parameters
  Type: array<Microsoft.VisualStudio.Data.Services.SupportEntities.IVsDataParameter[]

  An array of IVsDataParameter objects representing the command parameters for the specified command type.

Return Value

Type: System.String
An identifier of the prepared command that can later be passed to the Execute or ExecuteWithoutResults method by using the command type Prepared.

Implements

IVsDataCommand.Prepare(String, DataCommandType, array<IVsDataParameter[])

Exceptions

Exception	Condition
ArgumentNullException	The command parameter is nulla null reference (Nothing in Visual Basic).
ArgumentOutOfRangeException	The commandTimeout parameter is less than -1.

Remarks

Other exceptions that occur indicate that the preparation failed for a provider-specified reason.

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

DataCommand Class

Prepare Overload

Microsoft.VisualStudio.Data.Framework Namespace

DataCommand