open xml error:不支持给定路径的格式

时间:2015-09-09 04:25:08

标签: c# asp.net .net openxml

我正在尝试使用open xml将给定的数据表导出到xlsx文件。

我写了以下代码:

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,我收到错误:

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

错误:

  

mAn中出现'System.NotSupportedException'类型的异常   发生了'System.NotSupportedException'类型的异常   mscorlib.dll但未在用户代码中处理

 Additional information: The given path's format is not supported.

变量目标具有值:

  

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

如何解决此错误?

我试过了:

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

但同样的错误就在那条线上。

当我将文件重命名为IncorrectRecordsUploaded.xlsx时,它开始抛弃我:

  

类型'System.UnauthorizedAccessExAn的异常'类型'System.UnauthorizedAccessException'的异常在WindowsBase.dll中发生但未在用户代码中处理

     

其他信息:拒绝访问路径“C:\ Program Files(x86)\ IIS Express \ IncorrectRecordsUploaded.xlsx”。

1 个答案:

答案 0 :(得分:1)

你解决了两个不同的错误。

由于文件名字符无效而发生第一次错误。 有几个符号在命名时有所不同:<>:"/\,{{1 },|?。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,则可以使用此正则表达式删除所有不允许的符号:

*

您的第二个错误发生,因为您无法访问此路径。尝试将文件保存到其他位置(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, "_"); Documents)。