as in https://www.e-iceblue.com/Tutorials/Spi ... B.NET.html
Code:
Document doc = new Document();
doc.LoadFromFile("aa.docx");
doc.InsertTextFromFile("bb.docx", Spire.Doc.FileFormat.Docx);
doc.InsertTextFromFile("cc.docx", Spire.Doc.FileFormat.Docx);
doc.SaveToFile("out.docx", Spire.Doc.FileFormat.Docx);
error
[ArgumentException: L'elemento è già stato aggiunto. Chiave nel dizionario: '/word/webextensions/taskpanes1.xml'. Chiave aggiunta: '/word/webextensions/taskpanes1.xml']
System.Collections.SortedList.Add(Object key, Object value) +12517320
spr권.䀭(spr곗 A_0) +98
spr갢.䀭(spr곗 A_0, String A_1, String A_2, String A_3, String& A_4) +71
spr츗.䆗() +372
spr츗.䀭(sprḅ A_0) +248
spr츗.䀭(Document A_0, Stream A_1) +117
spr츗.䀭(Document A_0, String A_1) +79
Spire.Doc.Document.䫈(String A_0) +52
Spire.Doc.Document.SaveToFile(String fileName, FileFormat fileFormat) +170
IricavAcque.Mensile.bntCreaMensile_Click(Object sender, EventArgs e) +2690
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9847130
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +211
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +12
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +15
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1696
Product version
Spire Doc 11.3.1