AdomdDataReader.GetChars Method

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

命名空间: Microsoft.AnalysisServices.AdomdClient
程序集: Microsoft.AnalysisServices.AdomdClient (in microsoft.analysisservices.adomdclient.dll)

语法

声明
Public Function GetChars ( _
    ordinal As Integer, _
    dataIndex As Long, _
    buffer As Char(), _
    bufferIndex As Integer, _
    length As Integer _
) As Long

public long GetChars (
    int ordinal,
    long dataIndex,
    char[] buffer,
    int bufferIndex,
    int length
)

public:
virtual long long GetChars (
    int ordinal, 
    long long dataIndex, 
    array<wchar_t>^ buffer, 
    int bufferIndex, 
    int length
) sealed

public final long GetChars (
    int ordinal, 
    long dataIndex, 
    char[] buffer, 
    int bufferIndex, 
    int length
)

public final function GetChars (
    ordinal : int, 
    dataIndex : long, 
    buffer : char[], 
    bufferIndex : int, 
    length : int
) : long

参数

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

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

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

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

• length
  The number of characters to read from the column.

返回值

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

异常

备注

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 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.

线程安全

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.

平台

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

请参阅

参考

AdomdDataReader Class
AdomdDataReader Members
Microsoft.AnalysisServices.AdomdClient Namespace