Contents Index GetChar method GetDataTypeName method

ASA Programming Guide
  Adaptive Server Anywhere .NET Data Provider API Reference
    AsaDataReader class

GetChars method


Description 

Reads a stream of characters from the specified column offset into the buffer as an array starting at the given buffer offset.

Syntax 

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

Parameters 

ordinal    The zero-based column ordinal.

dataIndex    The index within the row from which to begin the read operation.

buffer    The buffer into which to copy data.

bufferIndex    The index for buffer to begin the read operation.

length    The number of characters to read.

Return value 

The actual number of characters read.

Implements 

IDataRecord.GetChars

Usage 

GetChars 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. This may be the case, for example, when the AsaDataReader is reading a large data structure into a buffer.

If you pass a buffer that is a null reference (Nothing in Visual Basic), GetChars returns the length of the field in characters.

No conversions are performed, so the data retrieved must already be a character array.

See also 

Handling BLOBs


Contents Index GetChar method GetDataTypeName method