How to add System.Drawing.Image to C1FlexReport.Field.Picture?

How to add System.Drawing.Image to C1FlexReport.Field.Picture?

Posted by: l.balazs on 11 July 2025, 8:55 am EST

• 

  l.balazs

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  Posted 11 July 2025, 8:55 am EST

  Hi,
  
  In .NET 8 the following statement causes run-time error in C1FlexReport8:

  private void PrintValue(C1.Win.FlexReport.Field field, System.Drawing.Image image)
  {
  ...
  	field.Picture = image;
  ...
  }

  Error = System.ArgumentException: ‘Invalid parameter for PictureHolder constructor.’
  
  Notes:

  1. The field .Picture has object type…
  2. This function just works fine up to .NET Framework 4.8.

  How can I fix this?
  
  Thanks,
  
  Louis

• 

  uttkarsh.matiyal

  

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  Posted 14 July 2025, 4:33 am EST

  Hello Louis,

  The Picture property used to take a System.Drawing.Image object before but now it takes a GrapeCity.Documents.Drawing.Image object.
  
  Please refer to Picture property for more information: https://developer.mescius.com/componentone/docs/reporting/online-flexreport/C1.FlexReport~C1.Report.ImageField~Picture.html
  
  So you can update your code as follows:

  private void PrintValue(C1.Win.FlexReport.Field field, System.Drawing.Image image)
  {
      using (var ms = new MemoryStream())
      {
          // Save the image as PNG to memory stream
          image.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
  
          // Convert to GcImage and assign to the field
          field.Picture = GrapeCity.Documents.Drawing.Image.FromBytes(ms.ToArray());
      }
  }

  Regards,
  
  Uttkarsh.