open xml error : The given path's format is not supported

Question

我正在尝试使用 open xml.

将给定的数据表导出到 xlsx 文件

我写了下面的代码：

private void ExportToExcelFileOpenXML(DataTable dt, string destination)
{
    DataSet ds = new DataSet();
    DataTable dtCopy = new DataTable();
    dtCopy = dt.Copy();
    ds.Tables.Add(dtCopy);
    using (var workbook = SpreadsheetDocument.Create(destination, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
    {           

        var workbookPart = workbook.AddWorkbookPart();

        workbook.WorkbookPart.Workbook = new DocumentFormat.OpenXml.Spreadsheet.Workbook();

        workbook.WorkbookPart.Workbook.Sheets = new DocumentFormat.OpenXml.Spreadsheet.Sheets();

        foreach (System.Data.DataTable table in ds.Tables)
        {

            var sheetPart = workbook.WorkbookPart.AddNewPart<WorksheetPart>();
            var sheetData = new DocumentFormat.OpenXml.Spreadsheet.SheetData();
            sheetPart.Worksheet = new DocumentFormat.OpenXml.Spreadsheet.Worksheet(sheetData);

            DocumentFormat.OpenXml.Spreadsheet.Sheets sheets = workbook.WorkbookPart.Workbook.GetFirstChild<DocumentFormat.OpenXml.Spreadsheet.Sheets>();
            string relationshipId = workbook.WorkbookPart.GetIdOfPart(sheetPart);

            uint sheetId = 1;
            if (sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Count() > 0)
            {
                sheetId =
                    sheets.Elements<DocumentFormat.OpenXml.Spreadsheet.Sheet>().Select(s => s.SheetId.Value).Max() + 1;
            }

            DocumentFormat.OpenXml.Spreadsheet.Sheet sheet = new DocumentFormat.OpenXml.Spreadsheet.Sheet() { Id = relationshipId, SheetId = sheetId, Name = table.TableName };
            sheets.Append(sheet);

            DocumentFormat.OpenXml.Spreadsheet.Row headerRow = new DocumentFormat.OpenXml.Spreadsheet.Row();

            List<String> columns = new List<string>();
            foreach (System.Data.DataColumn column in table.Columns)
            {
                columns.Add(column.ColumnName);

                DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
                cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
                cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(column.ColumnName);
                headerRow.AppendChild(cell);
            }


            sheetData.AppendChild(headerRow);

            foreach (System.Data.DataRow dsrow in table.Rows)
            {
                DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
                foreach (String col in columns)
                {
                    DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
                    cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
                    cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString()); //
                    newRow.AppendChild(cell);
                }

                sheetData.AppendChild(newRow);
            }
        }
    }
}

在这个函数中，我在 :

上遇到错误

using (var workbook = SpreadsheetDocument.Create(destination, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))

错误：

An exception of type 'System.NotSupportedException' occurred in mAn exception of type 'System.NotSupportedException' occurred in mscorlib.dll but was not handled in user code
 Additional information: The given path's format is not supported.

变量目的地有值：

IncorrectRecordsUploaded_9/9/2015 9:48:23 AM.xlsx

我该如何解决这个错误？

我试过了:

destination.replace("/","//");

但该行出现了同样的错误。

当我将文件重命名为 IncorrectRecordsUploaded.xlsx 时，它开始向我抛出 :

An exception of type 'System.UnauthorizedAccessExAn exception of type 'System.UnauthorizedAccessException' occurred in WindowsBase.dll but was not handled in user code

Additional information: Access to the path 'C:\Program Files (x86)\IIS Express\IncorrectRecordsUploaded.xlsx' is denied.

Answer 1

您描述了两个不同的错误。

第一个错误 由于文件名字符无效。有几个符号，不能命名：<、>、:、"、/、\、|、?、*。您也可以在 MSDN 上查看 naming files and folders 的规则。

如果您自己创建目标路径，您可以使用此正则表达式来删除所有不允许的符号：

using System.IO;
using System.Text.RegularExpressions;

var pattern = new string(Path.GetInvalidFileNameChars()) + new string(Path.GetInvalidPathChars());
var r = new Regex(string.Format("[{0}]", Regex.Escape(pattern)));
tempFileName = r.Replace(tempFileName, "_");

您的第二个错误发生是因为您无法访问此路径。尝试将您的文件保存到另一个地方（Documents 或 C:/）。

open xml error : The given path's format is not supported

open xml error : The given path's format is not supported

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