c# - 导出到 excel 数据时出错 : ' ' , 十六进制值 0x07，是使用 c# 的无效字符

Question

当我尝试将 kendo ui 网格中的数据导出到 excel 时，我遇到了奇怪的问题.....

错误:

  An exception of type 'System.ArgumentException' occurred in System.Xml.dll but was not handled in user code

Additional information: ' ', hexadecimal value 0x07, is an invalid character.

以及我用于导出到excel的以下方法

  private static void WriteDataTableToExcelWorksheet(DataTable dt, WorksheetPart worksheetPart)
  {
        OpenXmlWriter writer = OpenXmlWriter.Create(worksheetPart);
        writer.WriteStartElement(new Worksheet());
        writer.WriteStartElement(new SheetData());

        string cellValue = "";

        int numberOfColumns = dt.Columns.Count;
        bool[] IsNumericColumn = new bool[numberOfColumns];

        string[] excelColumnNames = new string[numberOfColumns];
        for (int n = 0; n < numberOfColumns; n++)
            excelColumnNames[n] = GetExcelColumnName(n);

        uint rowIndex = 1;

        writer.WriteStartElement(new Row { RowIndex = rowIndex });
        for (int colInx = 0; colInx < numberOfColumns; colInx++)
        {
            DataColumn col = dt.Columns[colInx];
            AppendTextCell(excelColumnNames[colInx] + "1", col.ColumnName, ref writer);
            IsNumericColumn[colInx] = (col.DataType.FullName == "System.Decimal") || (col.DataType.FullName == "System.Int32") || (col.DataType.FullName == "System.Double") || (col.DataType.FullName == "System.Single");
        }
        writer.WriteEndElement();   

        double cellNumericValue = 0;
        foreach (DataRow dr in dt.Rows)
        {

            ++rowIndex;

            writer.WriteStartElement(new Row { RowIndex = rowIndex });

            for (int colInx = 0; colInx < numberOfColumns; colInx++)
            {
                cellValue = dr.ItemArray[colInx].ToString();

                if (IsNumericColumn[colInx])
                {

                    cellNumericValue = 0;
                    if (double.TryParse(cellValue, out cellNumericValue))
                    {
                        cellValue = cellNumericValue.ToString();
                        AppendNumericCell(excelColumnNames[colInx] + rowIndex.ToString(), cellValue, ref writer);
                    }
                }
                else
                {

                    AppendTextCell(excelColumnNames[colInx] + rowIndex.ToString(), cellValue, ref writer);
                }
            }
            writer.WriteEndElement(); 
        }
        writer.WriteEndElement(); 
        writer.WriteEndElement(); 

        writer.Close();
   }

   private static void AppendTextCell(string cellReference, string cellStringValue, ref OpenXmlWriter writer)
   {

        writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.String });
   }

在下面提到的方法中，我遇到了异常错误..

  private static void AppendTextCell(string cellReference, string cellStringValue, ref OpenXmlWriter writer)
  {           
       writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.String });
  }

在导出到excel数据时，任何人都可以帮助解决这个错误....

提前谢谢了..

Answer 1

XML 几乎可以处理任何字符，但是它不能处理范围、控制代码等。

如果你不能让他们修复他们的输出，你最好的选择是清理你收到的原始数据。您需要用您记下的字符引用格式替换非法字符。

有很多符号不能在 xml 代码中。为了替换它们，我们可以使用 Reqex.Replace

static string ReplaceHexadecimalSymbols(string txt)
{
   string r = "[\x00-\x08\x0B\x0C\x0E-\x1F\x26]";
   return Regex.Replace(txt, r,"",RegexOptions.Compiled);
}