C#，使用 OpenXmlWriter 和 Open XML SDK 编写 XLSX

在 C# 中，以下程序编译并运行，但它不会在 Excel 输出文件中写入任何内容。

我让它工作没有OpenXmlWriter但我开始内存不足，所以我必须切换到OpenXmlWriter根据这个http://blogs.msdn.com/b/brian_jones/archive/2010/06/22/writing-large-excel-files-with-the-open-xml-sdk.aspx http://blogs.msdn.com/b/brian_jones/archive/2010/06/22/writing-large-excel-files-with-the-open-xml-sdk.aspx

class Program
{
    static void Main(string[] args)
    {
        File.Copy("book.xlsx", "output.xlsx", true);
        WriteValuesSAX("output.xlsx", 10, 10);
    }

    static void WriteValuesSAX(string filename, int numRows, int numCols)
    {
        using (SpreadsheetDocument myDoc = 
               SpreadsheetDocument.Open(filename, true))
        {
            WorkbookPart workbookPart = myDoc.WorkbookPart;
            WorksheetPart worksheetPart = workbookPart.WorksheetParts.First();

            OpenXmlWriter writer = OpenXmlWriter.Create(worksheetPart);

            Row r = new Row();
            Cell c = new Cell();
            CellValue v = new CellValue("Test");
            c.AppendChild(v);

            writer.WriteStartElement(new SheetData());
            for (int row = 0; row < numRows; row++)
            {
                writer.WriteStartElement(r);
                for (int col = 0; col < numCols; col++)
                {
                    writer.WriteElement(c);
                }
                writer.WriteEndElement();
            }
            writer.WriteEndElement();

            writer.Close();
        }
    }
}

为什么它不写任何东西输出？

我还不太明白这一点，但我已经成功了。 这就是我最终得到的结果。

class Program
{
    static void Main(string[] args)
    {
        File.Copy("book.xlsx", "output.xlsx", true);
        WriteRandomValuesSAX("output.xlsx", 10, 10);
    }

    static void WriteRandomValuesSAX(string filename, int numRows, int numCols)
    {
        using (SpreadsheetDocument myDoc = SpreadsheetDocument.Open(filename, true))
        {
            WorkbookPart workbookPart = myDoc.WorkbookPart;
            WorksheetPart worksheetPart = workbookPart.WorksheetParts.Last();

            OpenXmlWriter writer = OpenXmlWriter.Create(worksheetPart);

            Row r = new Row();
            Cell c = new Cell();
            CellValue v = new CellValue("Test");
            c.AppendChild(v);

            writer.WriteStartElement(new Worksheet());
            writer.WriteStartElement(new SheetData());
            for (int row = 0; row < numRows; row++)
            {
                writer.WriteStartElement(r);
                for (int col = 0; col < numCols; col++)
                {
                    writer.WriteElement(c);
                }
                writer.WriteEndElement();
            }
            writer.WriteEndElement();
            writer.WriteEndElement();

            writer.Close();
        }
    }
}

注意我添加了writer.WriteStartElement(new Worksheet());和另一个writer.WriteEndElement();

我在这里找到了正确的 xml 格式：http://msdn.microsoft.com/en-us/library/gg278309.aspx http://msdn.microsoft.com/en-us/library/gg278309.aspx

Which is

<?xml version="1.0" encoding="utf-8"?> <x:worksheet xmlns:x="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
    <x:sheetData>
        <x:row r="1">
            <x:c r="A1" t="n">
                <x:v>100</x:v>
            </x:c>
        </x:row>
    </x:sheetData> </x:worksheet>

因此，我打开（解压缩）xlsx 文件并导航到 output.xlsx\xl\worksheets\sheet1.xml 并发现我缺少<x:worksheet>.