IsClosed Property (UniDataReader)

In This Topic

Gets a value indicating whether the data reader is closed.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides ReadOnly Property IsClosed As Boolean

public override bool IsClosed {get;}

Property Value

true if the UniDataReader is closed; otherwise, false.

Remarks

IsClosed and RecordsAffected are the only properties that you can call after the UniDataReader is closed.

Example

The sample below reads all data from DataReader if it is not closed; otherwise it displays a message and some information.

csharp

public void ProcessReader (UniDataReader myReader)
{
  if (!myReader.IsClosed)
  {
    while (myReader.Read())
    {
      for (int i=0;i<myReader.FieldCount;i++)
      {
        Console.Write("\t"+myReader[i]);
      }
      Console.WriteLine();
    }
  }
  else
  {
    Console.WriteLine("The DataReader is closed. Rows affected in last action: "+myReader.RecordsAffected);
  }
}

Visual Basic

Public Sub ProcessReader(ByVal myReader As UniDataReader)
  If Not myReader.IsClosed Then
    Dim i As Integer
    While myReader.Read()
      For i = 0 To myReader.FieldCount - 1
        Console.Write(" " & myReader(i))
      Next i
      Console.WriteLine()
    End While
  Else
    Console.WriteLine("The DataReader is closed. Rows affected in last action: " & myReader.RecordsAffected)
  End If
End Sub

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

UniDataReader Class
UniDataReader Members
RecordsAffected Property

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