Aspose.Words：如何添加另一個WORD文檔中的Node對象

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

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

這段代碼會拋出異常：“The newChild was created from a different document than the one that created this node.”，這是什么原因呢？

原因是，對於Aspose.Words的Node對象，它的一系列樣式和格式的控制，取決於它所在的DocumentBase父對象，這也是很多Aspose.Words對象聲明時，必須指定它的DocumentBase參數，比如聲明一個Table，應該如下：

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

那么，我們有沒有辦法添加另一個文檔中的對象呢？有，必須通過Document.ImportNode方法或者使用NodeImporter對象。

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

Document.ImportNode

/// <summary>
/// A manual implementation of the Document.AppendDocument function which shows the general 
/// steps of how a document is appended to another.
/// </summary>
/// <param name="dstDoc">The destination document where to append to.</param>
/// <param name="srcDoc">The source document.</param>
/// <param name="mode">The import mode to use when importing content from another document.</param>
public void AppendDocument(Document dstDoc, Document srcDoc, ImportFormatMode mode)
{
    // Loop through all sections in the source document. 
    // Section nodes are immediate children of the Document node so we can just enumerate the Document.
    foreach (Section srcSection in srcDoc)
    {
        // Because we are copying a section from one document to another, 
        // it is required to import the Section node into the destination document.
        // This adjusts any document-specific references to styles, lists, etc.
        //
        // Importing a node creates a copy of the original node, but the copy
        // is ready to be inserted into the destination document.
        Node dstSection = dstDoc.ImportNode(srcSection, true, mode);

        // Now the new section node can be appended to the destination document.
        dstDoc.AppendChild(dstSection);
    }
}

NodeImporter

public static Document GenerateDocument(Document srcDoc, ArrayList nodes)
        {
            // Create a blank document.
            Document dstDoc = new Document();
            // Remove the first paragraph from the empty document.
            dstDoc.FirstSection.Body.RemoveAllChildren();

            // Import each node from the list into the new document. Keep the original formatting of the node.
            NodeImporter importer = new NodeImporter(srcDoc, dstDoc, ImportFormatMode.KeepSourceFormatting);

            foreach (Node node in nodes)
            {
                Node importNode = importer.ImportNode(node, true);
                dstDoc.FirstSection.Body.AppendChild(importNode);
            }

            // Return the generated document.
            return dstDoc;
        }

 

參考文檔：

http://www.aspose.com/docs/display/wordsnet/Aspose.Words.DocumentBase.ImportNode+Overload_1