[英]error while exporting to excel data : ' ', hexadecimal value 0x07, is an invalid character using c#
当我尝试将Kendo ui网格中的数据导出到Excel时,我遇到了一个奇怪的问题。
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.
和下面的方法,我被用来导出到Excel
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,我遇到了以上异常错误。
private static void AppendTextCell(string cellReference, string cellStringValue, ref OpenXmlWriter writer)
{
writer.WriteElement(new Cell { CellValue = new CellValue(cellStringValue), CellReference = cellReference, DataType = CellValues.String });
}
任何人都可以帮助导出导出到excel数据时如何克服此错误....
提前谢谢了..
XML几乎可以处理任何字符,但是有范围,控制代码等,而它不能。
最好的选择是,如果无法让他们修复其输出,则要清理接收到的原始数据。 您需要使用记下的字符参考格式替换非法字符。
xml代码中没有很多符号。 要替换它们,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);
}
x26是“&”字符-可以用“&”编码,以便出现在Excel工作表中。
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