OpenXML库保存Excel文件 [英] OpenXML library save excel file

问题描述

我有以下代码，它没有将值保存到单元格以及文件中.它在cell.cellvalue字段中显示值，但未将其写入excel.我不知道如何保存文件.我使用了 OpenXml-SDK ，并且正在将datatable值写入创建的电子表格文档的每个cell/row中.

I have the following code and its not saving the values to cell and also in file. It shows value in cell.cellvalue field but its not writing it to excel. I have no idea how to save the file. I used OpenXml-SDK and I am writing datatable values to each cell/row of created spreadsheet document.

 using (SpreadsheetDocument ssd=SpreadsheetDocument.Open(Server.MapPath(@"\ExcelPackageTemplate.xlsx"),true))
        {
            WorkbookPart wbPart = ssd.WorkbookPart;
            WorksheetPart worksheetPart = wbPart.WorksheetParts.First();

            SheetData sheetdata = worksheetPart.Worksheet.GetFirstChild<SheetData>();
            string[] headerColumns = new string[] { dt.Columns[0].ColumnName, dt.Columns[1].ColumnName,dt.Columns[2].ColumnName };
            DocumentFormat.OpenXml.Spreadsheet.Row r = new DocumentFormat.OpenXml.Spreadsheet.Row();
            int RowIndexer = 1;
            //int colInd=0;
            r.RowIndex = (UInt32)RowIndexer;

            string test = ColumnName(RowIndexer);

            foreach (DataColumn dc in dt.Columns)
            {

                DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
                cell.CellReference = test+RowIndexer;
                cell.DataType = CellValues.InlineString;
                cell.InlineString = new InlineString(new Text(dc.ColumnName.ToString()));
                DocumentFormat.OpenXml.Spreadsheet.CellValue value = new DocumentFormat.OpenXml.Spreadsheet.CellValue();

                r.AppendChild(cell);

                // colInd++;
            }

            //r.RowIndex = (UInt32)RowIndexer;
            RowIndexer = 2;
            foreach (DataRow dr in dt.Rows)
            {
                DocumentFormat.OpenXml.Spreadsheet.Row Row = new DocumentFormat.OpenXml.Spreadsheet.Row();
                string Index = ColumnName(RowIndexer);
                Row.RowIndex = (UInt32)RowIndexer;
                foreach (object value in dr.ItemArray)
                {
                    DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
                    cell.DataType = CellValues.InlineString;
                    cell.InlineString =  new InlineString(new Text(value.ToString()));
                    cell.CellReference = Index+RowIndexer;
                   // cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(value.ToString());
                    Row.AppendChild(cell);

                }
                RowIndexer++;

            }

            worksheetPart.Worksheet.Save();
            wbPart.Workbook.Save();
            ssd.Close();

推荐答案

尝试一下:

using (SpreadsheetDocument ssd = SpreadsheetDocument.Open(Server.MapPath(@"\ExcelPackageTemplate.xlsx"), true))
{
    WorkbookPart wbPart = ssd.WorkbookPart;
    WorksheetPart worksheetPart = wbPart.WorksheetParts.First();

    SheetData sheetdata = worksheetPart.Worksheet.GetFirstChild<SheetData>();
    string[] headerColumns = new string[] { dt.Columns[0].ColumnName, dt.Columns[1].ColumnName, dt.Columns[2].ColumnName };
    DocumentFormat.OpenXml.Spreadsheet.Row r = new DocumentFormat.OpenXml.Spreadsheet.Row();
    DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
    int RowIndexer = 1;
    int ColumnIndexer = 1;

    r.RowIndex = (UInt32)RowIndexer;
    foreach (DataColumn dc in dt.Columns)
    {
        cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
        cell.CellReference = ColumnName(ColumnIndexer) + RowIndexer;
        cell.DataType = CellValues.InlineString;
        cell.InlineString = new InlineString(new Text(dc.ColumnName.ToString()));
        // consider using cell.CellValue. Then you don't need to use InlineString.
        // Because it seems you're not using any rich text so you're just bloating up
        // the XML.

        r.AppendChild(cell);

        ColumnIndexer++;
    }
    // here's the missing part you needed
    sheetdata.Append(r);

    RowIndexer = 2;
    foreach (DataRow dr in dt.Rows)
    {
        r = new DocumentFormat.OpenXml.Spreadsheet.Row();
        r.RowIndex = (UInt32)RowIndexer;
        // this follows the same starting column index as your column header.
        // I'm assuming you start with column 1. Change as you see fit.
        ColumnIndexer = 1;
        foreach (object value in dr.ItemArray)
        {
            cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
            // I moved it here so it's consistent with the above part
            // Also, the original code was using the row index to calculate
            // the column name, which is weird.
            cell.CellReference = ColumnName(ColumnIndexer) + RowIndexer;
            cell.DataType = CellValues.InlineString;
            cell.InlineString = new InlineString(new Text(value.ToString()));

            r.AppendChild(cell);
            ColumnIndexer++;
        }
        RowIndexer++;

        // missing part
        sheetdata.Append(r);
    }

    worksheetPart.Worksheet.Save();
    wbPart.Workbook.Save();
    ssd.Close();
}

一些评论:

• ColumnName()函数来自此处.
• 我假设您想要一行中的列标题以及后续行中的数据(因为原始代码具有用于计算列名的行索引).
• 清理了部分代码，使其更易于阅读，并且列标题和数据行部分的书写样式更加一致.
• 我建议您考虑使用CellValue而不是InlineString.根据您的代码，您正在导入一个DataTable，并且您似乎不需要富文本格式，因此InlineString有点过大，可能会使生成的文件更大(XML膨胀).使用一个或另一个，并记住相应地设置DataType.
• 此外，该代码仅适用于完全空的SheetData.

• The ColumnName() function is from here.
• I'm assuming you wanted the column headers in a row, and data in subsequent rows (because the original code had the row index used for calculating the column name).
• Cleaned up some parts of the code so it's easier to read and that the column header and data row parts are more consistent in writing style.
• I suggest that you consider using CellValue instead of InlineString. Based on your code, you're importing a DataTable, and you don't seem to need rich text so InlineString's are a little overkill and might make the resulting file larger (bloated XML). Use one or the other, and remember to set DataType accordingly.
• Also, the code only works for completely empty SheetData.

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