AdoDotNetConnectionSupport.DeriveParameters Method

Derives parameters that can be specified for a given command

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

Syntax

'宣言
Public Overridable Function DeriveParameters ( _
    command As String, _
    commandType As Integer, _
    commandTimeout As Integer _
) As DataParameter()
'使用
Dim instance As AdoDotNetConnectionSupport
Dim command As String
Dim commandType As Integer
Dim commandTimeout As Integer
Dim returnValue As DataParameter()

returnValue = instance.DeriveParameters(command, _
    commandType, commandTimeout)

public virtual DataParameter[] DeriveParameters(
    string command,
    int commandType,
    int commandTimeout
)

public:
virtual array<DataParameter^>^ DeriveParameters(
    String^ command, 
    int commandType, 
    int commandTimeout
)

public function DeriveParameters(
    command : String, 
    commandType : int, 
    commandTimeout : int
) : DataParameter[]

Parameters

command
Type: System.String

A data-source-specific command from which to derive parameters.

commandType
Type: System.Int32

The command type for the indicated command, specifying how to interpret the contents of the command parameter.

commandTimeout
Type: System.Int32

The length of time, in seconds, to block the client before canceling the parameter derivation and returning to the caller. A value of zero indicates infinite timeout; value of -1 indicates a provider default.

Return Value

Type: []

Returns an array of DataParameter objects, each one representing a parameter derived from the command.

Remarks

Once the instances of the derived parameter objects are retrieved the client owns them and can modify their values as needed; the client will then pass these values to an Execute or ExecuteWithoutResults calls.

Permissions

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.