We are glad to announce the release of Spire.Office 7.12. In this version, Spire.PDF supports setting the form field's Show/Hide, adding custom metadata, and adding a namespace to PDF metadata; Spire.XLS supports .NET 7.0; Spire.Presentation fixes the issue that the content was lost after saving PowerPoint slide as Image. Besides, many known issues are fixed successfully in this version. More details are listed below.

In this version, the most recent versions of Spire.Doc, Spire.PDF, Spire.XLS, Spire.Presentation, Spire.Email, Spire.DocViewer, Spire.PDFViewer, Spire.Spreadsheet, Spire.OfficeViewer, Spire.DataExport, Spire.Barcode are included.

DLL Versions:

• Spire.Doc.dll v10.12.0
• Spire.Pdf.dll v8.12.5
• Spire.XLS.dll v12.12.1
• Spire.Presentation.dll v7.11.2
• Spire.Barcode.dll v6.12.1
• Spire.Email.dll v5.12.13
• Spire.Barcode.dll v6.12.1
• Spire.Spreadsheet.dll v6.12.0
• Spire.PdfViewer.Asp.dll v7.10.0
• Spire.PdfViewer.Forms.dll v7.10.0
• Spire.DocViewer.Forms.dll v7.10.0
• Spire.OfficeViewer.Forms.dll v7.12.4
• Spire.DataExport.dll v4.8.0

Here is a list of changes made in this release

Spire.PDF

Spire.Pdf.Fields.PdfField field = formWidget.FieldsWidget.List[0] as Spire.Pdf.Fields.PdfField;
//field.AnnotationFlags = Spire.Pdf.Annotations.PdfAnnotationFlags.Default; // Setting visibility
field.AnnotationFlags = Spire.Pdf.Annotations.PdfAnnotationFlags.Hidden; // Setting hidden

using(PdfDocument doc = new PdfDocument("1.pdf"))
{
  using(Stream stream = new FileStream('1.xml',FileMode.Open))
 {
    doc.Metadata = PdfXmlMetadata.Parse(stream);
 }
  doc.SaveToFile('result.pdf');
}

PdfXmlMetadata.RegisterNamespace("http://myRandomNamespace", "zf");
using(PdfDocument doc = new PdfDocument("1.pdf"))
{
    doc.Metadata.SetPropertyString("http://myRandomNamespace", "test1","my test");
    doc.SaveToFile('result.pdf');
}
PdfXmlMetadata.ResetNamespaces();

Spire.Presentation