GetString Method

Gets the value of the specified field (column) as a String.

Syntax

'Declaration
 
Public Overrides NotOverridable Function GetString( _
   ByVal ordinal As Integer _
) As String

'Usage
 
Dim instance As TdDataReader
Dim ordinal As Integer
Dim value As String
 
value = instance.GetString(ordinal)

public override string GetString( 
   int ordinal
)

public:
String^ GetString( 
   int ordinal
) override

Returns the value of the specified field represented as a System.String type.

Exceptions

Exception	Description
System.IndexOutOfRangeException	ordinal is less than zero or ordinal is equal to or greater than TdDataReader.FieldCount.
System.InvalidCastException	The field cannot be converted into System.String. A null field will result in an exception.
System.InvalidOperationException	CommandBehavior is set to SchemaOnly, or there is no data for the row or column, or preceding columns are no longer accessible.
System.ObjectDisposedException	The TdDataReader is closed.
TdException	The Advanced SQL Engine returned an error, or .NET Data Provider for Teradata detected an error.

Remarks

use this method to retrieve columns of type CHAR and VARCHAR.

The .NET Data Provider for Teradata uses the .NET Framework class libraries to convert the underlying field to a System.String.

Requirements

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