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Aspose.Words for .Net是一种高级Word文档处理API，用于执行各种文档管理和操作任务。API支持生成，修改，转换，呈现和打印文档，而无需在跨平台应用程序中直接使用Microsoft Word。2021年第一版更新来啦，.NET版Aspose.Words更新至v21.1新版本！

主要特点如下：

• 在DocumentBuilder类中引入了StartColumnBookmark和EndColumnBookmark方法。
• 添加MarkdownSaveOptions.ImageSavingCallback以控制在转换为Markdown格式后如何保存图像。
• 添加了在加载HTML时忽略HTML元素的功能。
• TableStyle.VerticalAlignment已公开。

>>你可以点击这里下载Aspose.Words for .NET v21.1测试体验。

具体更新内容

完整更新细则请参考：【Aspose.Words for .NET v21.1更新说明】

新功能解析

①WORDSNET-21203：添加了新的公共属性Node.CustomNodeId：

客户现在可以跟踪模型树中的节点位置，并根据分配的标识符绑定外部数据，用例如下：

DocumentBuilder builder = new DocumentBuilder();
Shape shape = builder.InsertShape(ShapeType.Rectangle, 100, 100);
shape.CustomNodeId = 100;

②WORDSNET-21114：添加了新的公共属性TableStyle.VerticalAlignment

该选项允许设置表格样式单元格的垂直对齐方式，用例如下：

Document doc = TestUtil.Open(fileName);
TableStyle style = (TableStyle)doc.Styles\["Custom Table 1"\];
style.VerticalAlignment = CellVerticalAlignment.Center;

③WORDSNET-21389：添加MarkdownSaveOptions.ImageSavingCallback

说明将文档保存为Markdown格式时如何使用“ MarkdownSaveOptions.ImageSavingCallback”

public void HandleDocument()
{
    const string outFileName = "SavingCallback.DocumentParts.Rendering.md";
 
    // Open a document to be converted to Markdown.
    Document doc = new Document("C:\\Rendering.docx");
 
    // We can use an appropriate SaveOptions subclass to customize the conversion process.
    MarkdownSaveOptions options = new MarkdownSaveOptions();
 
    // If we convert a document that contains images into Markdown, we will end up with one Markdown file which links to several images.
    // Each image will be in the form of a file in the local file system.
    // There is also a callback that can customize the name and file system location of each image.
    options.ImageSavingCallback = new SavedImageRename(outFileName);
 
    // The ImageSaving() method of our callback will be run at this time.
    doc.Save($"C:\\{outFileName}", options);
}

/// <summary>
/// Renames saved images that are produced when an Markdown document is saved.
/// </summary>
public class SavedImageRename : IImageSavingCallback
{
    public SavedImageRename(string outFileName)
    {
        mOutFileName = outFileName;
    }
 
    void IImageSavingCallback.ImageSaving(ImageSavingArgs args)
    {
        string imageFileName = $"{mOutFileName} shape {++mCount}, of type {args.CurrentShape.ShapeType}{Path.GetExtension(args.ImageFileName)}";
 
        args.ImageFileName = imageFileName;
        args.ImageStream = new FileStream($"C:\\{imageFileName}", FileMode.Create);
 
        Assert.True(args.ImageStream.CanWrite);
        Assert.True(args.IsImageAvailable);
        Assert.False(args.KeepImageStreamOpen);
    }
 
    private int mCount;
    private readonly string mOutFileName;
}