System.InvalidCastException: C1.C1Report.Section

System.InvalidCastException: C1.C1Report.Section

Posted by: enrique.pv-ext on 10 July 2026, 7:27 am EST

• 

  enrique.pv-ext

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  Posted 10 July 2026, 7:27 am EST

          // System.InvalidCastException: '[A]C1.C1Report.Section no puede convertirse en [B]C1.C1Report.Section.
          // El tipo A se origina a partir de 'C1.C1Report.4.8, Version=4.8.20251.721, Culture=neutral, PublicKeyToken=594a0605db190bb9' en el contexto 'Default'
          // en la ubicación 'C:\windows\Microsoft.Net\assembly\GAC_MSIL\C1.C1Report.4.8\v4.0_4.8.20251.721__594a0605db190bb9\C1.C1Report.4.8.dll'.
          // El tipo B se origina a partir de 'C1.C1Report.2, Version=2.6.20093.53207, Culture=neutral, PublicKeyToken=594a0605db190bb9' en el contexto 'Default'
          // en la ubicación 'C:\Users\xxx\AppData\Local\Temp\Temporary ASP.NET Files\vs\8d828e81\123f78ff\assembly\dl3\aba2dd9a\c120ca07_d29cdc01\C1.C1Report.2.dll'.'
  

              // Detail section height = 0 (no detail rows rendered separately)
              if (report.Sections.Contains("Detail"))
                  report.Sections["Detail"].Height = 0;

  // Debe ir al principio del archivo, antes de cualquier using
  extern alias c1v48;
  
  using Aleatica.Sep.WebApp.Controls.Reporting;
  using C1.Web.Wijmo.Controls.C1ReportViewer;
  using C1PreviewV48 = c1v48::C1.C1Preview;
  using C1ReportV48 = c1v48::C1.C1Report;        // la v4.8 via extern alias
  using CommonServices = Sep.Common.Service;

  var report = C1ReportViewer.CreateC1Report();

  better use ?

  var report = new C1ReportV48.C1Report();

  any help ?

• 

  uttkarsh.matiyal

  

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  Posted 13 July 2026, 4:13 am EST

  Hello Enrique,

  It looks like you are using different version of assemblies in your project. Please use only one version of C1 in your project.
  
  We have created a sample: Report_Sample.zip

  If you are not using different version, please modify the sample we attached to reproduce the error. Once we have a sample replicating the exact issue, we’ll investigate and assist you accordingly.

  Regards,
  
  Uttkarsh.