Intermittent problem when I try find object

[Marcos Flavio de Oliveira]

The error appear in intervals of 20 minutes. Then I repeat the operation and the problem doesnt appear.

----
The trace of error:

Erro Mensagem: Collection was modified; enumeration operation may not execute.;
Erro Fonte: AToMSFramework;
Erro StackTrace: at AToMSFramework.CPersistenceBroker.retrieveObject(CPersistentObject& obj, Boolean useFind, Boolean useCache) in C:\Sistemas\Sigere\Fontes\AtomsFramework\CPersistenceBroker.vb:line 191 at AToMSFramework.CPersistentObject.Find(CPersistentObject& obj, Boolean useCache) in C:\Sistemas\Sigere\Fontes\AtomsFramework\CPersistentObject.vb:line 788 at AToMSFramework.CPersistentObject.Find(CPersistentObject& obj) in C:\Sistemas\Sigere\Fontes\AtomsFramework\CPersistentObject.vb:line 805 at Sigere.OrcamentoSIAFIIncluir.txtFR_TextChanged(Object sender, EventArgs e) in C:\Sistemas\Sigere\Fontes\Site\Orcamento\OrcamentoSIAFIIncluir.aspx.vb:line 682

----
The function:

  Private Sub txtFR_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtFR.TextChanged
    Dim obFR As Negocio.FonteRecurso    ' Fonte de recurso.

    Try
      lblFRDesc.Text = ""

      If txtFR.Text.Trim <> "" Then
        obFR = New Negocio.FonteRecurso
        obFR.Codigo = txtFR.Text.Trim
        obFR.Find(obFR)

        If obFR.Persistent Then
          lblFRDesc.Text = obFR.DescricaoCompleta
        Else
          Throw New AvisoException(stAVISO_FONTE_CODIGO_INEXISTENTE)
        End If

        obFR = Nothing

        Page.RegisterStartupScript("Focaliza", GUI.Script.ScriptControleFocaliza(txtND.ClientID))
      End If

    Catch obAviso As Sistema.AvisoException
      lblMsgNegativaOrcamento.Text = obAviso.Message
      Page.RegisterStartupScript("Focaliza", GUI.Script.ScriptControleFocaliza(txtFR.ClientID))

    Catch obErro As Exception
      Response.Write("Erro Mensagem: " & obErro.Message & "; Erro Fonte: " & obErro.Source & "; Erro StackTrace: " & obErro.StackTrace.ToString)
    End Try
  End Sub

[Richard Banks]

Hi Marcos,

Thanks for noticing that.  I don't usually run my tests that long :-)

The problem comes from the cache expiry where an expired object is removed from the cache.

You can either grab the latest copy of CCacheEntry.vb from CVS or I can post the code for you.

- Richard