使用 F# 读取 Excel 文件中的单元格内容并打开 XML SDK

Question

我无法编译以下从 C# 翻译过来的代码。

编译器产生此错误：错误 FS0010：实现文件中此时或之前的结构化构造不完整。在此点或其他标记处或之前预期不完整的结构化构造。

// Assemblies
open System
open System.Linq
open System.Data
open System.Windows
open DocumentFormat.OpenXml // Also install DocumentFormat.OpenXml from nuget
open DocumentFormat.OpenXml.Packaging
open DocumentFormat.OpenXml.Spreadsheet
open Microsoft.Office.Interop.Excel


//Read the value of a single cell by string coordinates (Open XML SDK)
    let read_value_openxml file_path_and_name column row =
        let stream = new System.IO.FileStream(file_path_and_name, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite)

        // Open the spreadsheet document for read-only access.
        let document = SpreadsheetDocument.Open(stream, false)

        // Retrieve a reference to the workbook part.
        let wbPart = document.WorkbookPart

        // Find the sheet with the supplied name, and then use that sheet object to retrieve a reference to the first worksheet.
        let firstSheet:Sheet = wbPart.Workbook.Descendants<Sheet>().First()
        let theSheet:Worksheet = ((WorksheetPart.wbPart.GetPartById(firstSheet.Id)).Worksheet

        // Retrieve a reference to the worksheet part.
        let wsPart = wbPart.GetPartById(firstSheet.Id)

        // Use its Worksheet property to get a reference to the cell whose address matches the address you supplied.
        let theCell = wsPart.Worksheet.Descendants<Cell>().Where(fun c -> c.CellReference = column + row).FirstOrDefault()

            // Return a value
            theCell.InnerText

Answer 1

我认为问题出在缩进上。在 F# 中，如果代码缩进了相同数量的空格，则代码适合一个块。

您应该 return 值与 ead_value_openxml 函数的其余代码相同的缩进级别。功能似乎也已经缩进了。试试这个方法：

//Read the value of a single cell by string coordinates (Open XML SDK)
let read_value_openxml file_path_and_name column row =
    let stream = new System.IO.FileStream(file_path_and_name, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite)

    // Open the spreadsheet document for read-only access.
    let document = SpreadsheetDocument.Open(stream, false)

    // Retrieve a reference to the workbook part.
    let wbPart = document.WorkbookPart

    // Find the sheet with the supplied name, and then use that sheet object to retrieve a reference to the first worksheet.
    let firstSheet:Sheet = wbPart.Workbook.Descendants<Sheet>().First()
    let theSheet:Worksheet = ((WorksheetPart.wbPart.GetPartById(firstSheet.Id)).Worksheet

    // Retrieve a reference to the worksheet part.
    let wsPart = wbPart.GetPartById(firstSheet.Id)

    // Use its Worksheet property to get a reference to the cell whose address matches the address you supplied.
    let theCell = wsPart.Worksheet.Descendants<Cell>().Where(fun c -> c.CellReference = column + row).FirstOrDefault()

    // Return a value
    theCell.InnerText

使用 F# 读取 Excel 文件中的单元格内容并打开 XML SDK

Reading cell contents in an Excel file with F# and Open XML SDK

f#

c#-to-f#