AdomdDataReader.GetChars Method

Returns an array of Char objects that contain a stream of values from the specified column.

Пространство имен: Microsoft.AnalysisServices.AdomdServer
Сборка: msmgdsrv (in msmgdsrv.dll)

Синтаксис

'Декларация
Public Function GetChars ( _
    i As Integer, _
    fieldOffset As Long, _
    buffer As Char(), _
    bufferoffset As Integer, _
    length As Integer _
) As Long

public long GetChars (
    int i,
    long fieldOffset,
    char[] buffer,
    int bufferoffset,
    int length
)

public:
virtual long long GetChars (
    int i, 
    long long fieldOffset, 
    array<wchar_t>^ buffer, 
    int bufferoffset, 
    int length
) sealed

public final long GetChars (
    int i, 
    long fieldOffset, 
    char[] buffer, 
    int bufferoffset, 
    int length
)

public final function GetChars (
    i : int, 
    fieldOffset : long, 
    buffer : char[], 
    bufferoffset : int, 
    length : int
) : long

Параметры

i
The zero-based ordinal position of the column to be retrieved.

fieldOffset
The zero-based index within the column from which to begin reading data.

buffer
The buffer into which to read the stream of characters.

bufferoffset
The zero-based index within the buffer from which to begin writing data.

length
The number of characters to read from the column.

Возвращаемое значение

A Long that contains the number of characters actually read from the column.

Исключения

Тип исключения	Условие
IndexOutOfRangeException	The value ofdataIndex is greater than Int32.MaxValue. The value of bufferIndex is less than 0 or greater than the total of length and the length of buffer. For more information about this exception, see IndexOutOfRangeException Class.

IndexOutOfRangeException

The value ofdataIndex is greater than Int32.MaxValue.

The value of bufferIndex is less than 0 or greater than the total of length and the length of buffer.

For more information about this exception, see IndexOutOfRangeException Class.

Замечания

The GetChars method returns the number of available characters in the field. In most cases this is the exact length of the field. However, the number returned may be less than the true length of the field if GetChars has already been used to obtain characters from the field.

If you pass a null reference (Nothing in Microsoft Visual Basic) in the buffer parameter, GetBytes returns the length of the column in characters.

No conversions are performed; therefore the data retrieved must already be a character array.

Синхронизация потоков

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Платформы

Платформы разработки

Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.

Целевые платформы