Read Method (TdDataReader)

Advances the data reader to the next record / row.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overrides NotOverridable Function Read() As Boolean

'Usage
 
Dim instance As TdDataReader
Dim value As Boolean
 
value = instance.Read()

public override bool Read()

public:
bool Read(); override

Return Value

Returns true if the reader is advanced to the next record. Returns false if the end of the result set is reached.

Exceptions

Exception	Description
System.ObjectDisposedException	The TdDataReader is closed.
TdException	The Advanced SQL Engine returned an error, or .NET Data Provider for Teradata detected an error.

Remarks

TdDataReader is conceptually a static forward-only cursor. Read method advances the current position by one record. When data reader is first created, or when NextResult method is called, the current position is set prior to the first record. Therefore, you must call Read method to get access to the first record and subsequent records. This maintains consistent semantics throughout the interface at all times.

Requirements

Target Platforms: Windows 8.1, Windows 10, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019

Reference

TdDataReader Class
TdDataReader Members