首先看一段程式碼，這段程式碼意圖從docSource中獲取第一個表格，並插入docTarget的末尾：

1 var table = (Table)docSource.GetChild(NodeType.Table, 0, true);
2 docTarget.FirstSection.Body.ChildNodes.Add(table);

這段程式碼會丟擲異常：“The newChild was created from a different document than the one that created this node.”，這是什麼原因呢？

原因是，對於Aspose.Words的Node物件，它的一系列樣式和格式的控制，取決於它所在的DocumentBase父物件，這也是很多Aspose.Words物件宣告時，必須指定它的DocumentBase引數，比如宣告一個Table，應該如下：

1 Document doc=new Document();
2 Table table=new Table(doc);

那麼，我們有沒有辦法新增另一個文件中的物件呢？有，必須通過Document.ImportNode方法或者使用NodeImporter物件。

這兩種方法思路都是將源文件中的Node匯入到目標文件中，再追加Node到合適的位置。

 1 /// <summary>
 2 /// A manual implementation of the Document.AppendDocument function which shows the general 
 
 3 /// steps of how a document is appended to another.
 4 /// </summary>
 5 /// <param name="dstDoc">The destination document where to append to.</param>
 6 /// <param name="srcDoc">The source document.</param>
 7 /// <param name="mode">The import mode to use when importing content from another document.
 
</param>
 8 public void AppendDocument(Document dstDoc, Document srcDoc, ImportFormatMode mode)
 9 {
10     // Loop through all sections in the source document. 
11     // Section nodes are immediate children of the Document node so we can just enumerate the Document.
12     foreach (Section srcSection in srcDoc)
13     {
14         // Because we are copying a section from one document to another, 
15         // it is required to import the Section node into the destination document.
16         // This adjusts any document-specific references to styles, lists, etc.
17         //
18         // Importing a node creates a copy of the original node, but the copy
19         // is ready to be inserted into the destination document.
20         Node dstSection = dstDoc.ImportNode(srcSection, true, mode);
21 
22         // Now the new section node can be appended to the destination document.
23         dstDoc.AppendChild(dstSection);
24     }
25 }

 1 public static Document GenerateDocument(Document srcDoc, ArrayList nodes)
 2         {
 3             // Create a blank document.
 4             Document dstDoc = new Document();
 5             // Remove the first paragraph from the empty document.
 6             dstDoc.FirstSection.Body.RemoveAllChildren();
 7 
 8             // Import each node from the list into the new document. Keep the original formatting of the node.
 9             NodeImporter importer = new NodeImporter(srcDoc, dstDoc, ImportFormatMode.KeepSourceFormatting);
10 
11             foreach (Node node in nodes)
12             {
13                 Node importNode = importer.ImportNode(node, true);
14                 dstDoc.FirstSection.Body.AppendChild(importNode);
15             }
16 
17             // Return the generated document.
18             return dstDoc;
19         }

參考文件：