c# - 打开xml excel 在占位符中插入实际值

Question

我在 Excel 工作表中有一个包含占位符“$$value”的单元格，问题是我需要使用 Open XML 替换占位符的实际值并将其另存为单独的工作簿。

这是我试过的代码...它没有替换实际值，而且我无法保存工作簿。我需要解决这个问题。

WorksheetPart worksheetPart = (WorksheetPart)myWorkbook.WorkbookPart.GetPartById(sheet.Id);

DocumentFormat.OpenXml.Spreadsheet.Worksheet worksheet = worksheetPart.Worksheet;

string _txt1 = "$$value";

if (_txt1.Contains("$$"))

{

     worksheet.InnerText.Replace(_txt1, "test");

}

Answer 1

默认情况下，Excel 将字符串存储在全局(每个工作簿 1 个)SharedStringTablePart 中。因此，这就是您需要定位的目标。但是，OpenXML 格式还允许在 WorksheetPart 内嵌入文本。因此，完整的解决方案也需要在那里寻找。

这是一个示例应用程序(带有一些内嵌注释):

using DocumentFormat.OpenXml.Packaging;
using x = DocumentFormat.OpenXml.Spreadsheet;

class Program
{
private static readonly string placeHolder = "$$value";

static void Main()
{
    var templatePath = @"C:\Temp\template.xlsx";
    var resultPath = @"C:\Temp\result.xlsx";
    string replacementText = "test";

    using (Stream xlsxStream = new MemoryStream())
    {
        // Read template from disk
        using (var fileStream = File.OpenRead(templatePath)) 
            fileStream.CopyTo(xlsxStream);

        // Do replacements
        ProcessTemplate(xlsxStream, replacementText);

        // Reset stream to beginning
        xlsxStream.Seek(0L, SeekOrigin.Begin);

        // Write results back to disk
        using (var resultFile = File.Create(resultPath))
            xlsxStream.CopyTo(resultFile);
    }
}

private static void ProcessTemplate(Stream template, string replacementText)
{
    using (var workbook = SpreadsheetDocument.Open(template, true, new OpenSettings { AutoSave = true }))
    {
        // Replace shared strings
        SharedStringTablePart sharedStringsPart = workbook.WorkbookPart.SharedStringTablePart;
        IEnumerable<x.Text> sharedStringTextElements = sharedStringsPart.SharedStringTable.Descendants<x.Text>();
        DoReplace(sharedStringTextElements, replacementText);

        // Replace inline strings
        IEnumerable<WorksheetPart> worksheetParts = workbook.GetPartsOfType<WorksheetPart>();
        foreach (var worksheet in worksheetParts)
        {
            var allTextElements = worksheet.Worksheet.Descendants<x.Text>();
            DoReplace(allTextElements, replacementText);
        }

    } // AutoSave enabled
}

private static void DoReplace(IEnumerable<x.Text> textElements, string replacementText)
{
    foreach (var text in textElements)
    {
        if (text.Text.Contains(placeHolder))
            text.Text = text.Text.Replace(placeHolder, replacementText);
    }
}