Api.JetRetrieveColumns method
Retrieves multiple column values from the current record in a single operation. An array of JET_RETRIEVECOLUMN structures is used to describe the set of column values to be retrieved, and to describe output buffers for each column value to be retrieved.
Namespace: Microsoft.Isam.Esent.Interop
Assembly: Microsoft.Isam.Esent.Interop (in Microsoft.Isam.Esent.Interop.dll)
Syntax
'Declaration
Public Shared Function JetRetrieveColumns ( _
sesid As JET_SESID, _
tableid As JET_TABLEID, _
retrievecolumns As JET_RETRIEVECOLUMN(), _
numColumns As Integer _
) As JET_wrn
'Usage
Dim sesid As JET_SESID
Dim tableid As JET_TABLEID
Dim retrievecolumns As JET_RETRIEVECOLUMN()
Dim numColumns As Integer
Dim returnValue As JET_wrn
returnValue = Api.JetRetrieveColumns(sesid, _
tableid, retrievecolumns, numColumns)
public static JET_wrn JetRetrieveColumns(
JET_SESID sesid,
JET_TABLEID tableid,
JET_RETRIEVECOLUMN[] retrievecolumns,
int numColumns
)
Parameters
sesid
Type: Microsoft.Isam.Esent.Interop.JET_SESIDThe session to use.
tableid
Type: Microsoft.Isam.Esent.Interop.JET_TABLEIDThe cursor to retrieve the data from.
retrievecolumns
Type: []An array of one or more JET_RETRIEVECOLUMN objects describing the data to be retrieved.
numColumns
Type: System.Int32The number of entries in the columns array.
Return value
Type: Microsoft.Isam.Esent.Interop.JET_wrn
If any column retrieved is truncated due to an insufficient length buffer, then the API will return BufferTruncated. However other errors JET_wrnColumnNull are returned only in the error field of the JET_RETRIEVECOLUMN object.
See also
Reference
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