Extracts the schema from a database into a package.
命名空間： Microsoft.SqlServer.Dac
組件： Microsoft.SqlServer.Dac (在 Microsoft.SqlServer.Dac.dll 中)
語法
'宣告
Public Sub Extract ( _
packageStream As Stream, _
databaseName As String, _
applicationName As String, _
applicationVersion As Version, _
applicationDescription As String, _
tables As IEnumerable(Of Tuple(Of String, String)), _
extractOptions As DacExtractOptions, _
cancellationToken As Nullable(Of CancellationToken) _
)
'用途
Dim instance As DacServices
Dim packageStream As Stream
Dim databaseName As String
Dim applicationName As String
Dim applicationVersion As Version
Dim applicationDescription As String
Dim tables As IEnumerable(Of Tuple(Of String, String))
Dim extractOptions As DacExtractOptions
Dim cancellationToken As Nullable(Of CancellationToken)
instance.Extract(packageStream, databaseName, _
applicationName, applicationVersion, _
applicationDescription, tables, _
extractOptions, cancellationToken)
public void Extract(
Stream packageStream,
string databaseName,
string applicationName,
Version applicationVersion,
string applicationDescription,
IEnumerable<Tuple<string, string>> tables,
DacExtractOptions extractOptions,
Nullable<CancellationToken> cancellationToken
)
public:
void Extract(
Stream^ packageStream,
String^ databaseName,
String^ applicationName,
Version^ applicationVersion,
String^ applicationDescription,
IEnumerable<Tuple<String^, String^>^>^ tables,
DacExtractOptions^ extractOptions,
Nullable<CancellationToken> cancellationToken
)
member Extract :
packageStream:Stream *
databaseName:string *
applicationName:string *
applicationVersion:Version *
applicationDescription:string *
tables:IEnumerable<Tuple<string, string>> *
extractOptions:DacExtractOptions *
cancellationToken:Nullable<CancellationToken> -> unit
public function Extract(
packageStream : Stream,
databaseName : String,
applicationName : String,
applicationVersion : Version,
applicationDescription : String,
tables : IEnumerable<Tuple<String, String>>,
extractOptions : DacExtractOptions,
cancellationToken : Nullable<CancellationToken>
)
參數
- packageStream
型別：System.IO.Stream
Stream to which to write the package.
- databaseName
型別：System.String
Name of the source database.
- applicationName
型別：System.String
String identifier for the DAC application.
- applicationVersion
型別：System.Version
Version of the DAC application.
- applicationDescription
型別：System.String
Optional string summary of the DAC application.
- tables
型別：System.Collections.Generic.IEnumerable<Tuple<String, String>>
Optional enumerable used to retrieve enumerator over set of tables for which data should be exported. For each Tuple in the enumeration the first item specifies the schema of the table, and the second specifies the base identifier of the table. If the value for this parameter is a null reference, no data will be exported.
- extractOptions
型別：Microsoft.SqlServer.Dac.DacExtractOptions
Optional DacExtractOptions instance used to specify options that affect the behavior of package extraction.
- cancellationToken
型別：System.Nullable<CancellationToken>
Optional CancellationToken that can be used to indicate that the operation should be cancelled. Use of this object does not guarantee that the operation will be cancelled.
例外狀況
| 例外狀況 | 條件 |
|---|---|
| ArgumentException | If applicationName is a null reference or empty string. |
| DacServicesException | If a problem occurs during package extraction; or the supplied stream is not suitable for writing the package. |
| OperationCanceledException | If the CancellationToken has a cancellation requested and the operation could be cancelled. |