specified argument was out of the range of valid values. parameter name index.
61
Public Shared Function ExcelToDataTable(filename As String) As DataTable
Try
Dim dt As New DataTable()
Using doc As SpreadsheetDocument = SpreadsheetDocument.Open(filename, False)
Dim workbookPart As WorkbookPart = doc.WorkbookPart
Dim sheets As IEnumerable(Of Sheet) = doc.WorkbookPart.Workbook.GetFirstChild(Of Sheets)().Elements(Of Sheet)()
Dim relationshipId As String = sheets.First().Id.Value
Dim worksheetPart As WorksheetPart = DirectCast(doc.WorkbookPart.GetPartById(relationshipId), WorksheetPart)
Dim workSheet As Worksheet = worksheetPart.Worksheet
Dim sheetData As SheetData = workSheet.GetFirstChild(Of SheetData)()
Dim rows As IEnumerable(Of Row) = sheetData.Descendants(Of Row)()
For Each cell As Cell In rows.ElementAt(0)
dt.Columns.Add(GetCellValue(doc, cell))
Next
For Each row As Row In rows
'this will also include your header row...
Dim tempRow As DataRow = dt.NewRow()
For i As Integer = 0 To row.Descendants(Of Cell)().Count() - 1
tempRow(i) = GetCellValue(doc, row.Descendants(Of Cell)().ElementAt(i))
Next
dt.Rows.Add(tempRow)
Next
End Using
dt.Rows.RemoveAt(0)
Return dt
Catch ex As Exception
Throw ex
End Try
End Function
Public Shared Function GetCellValue(document As SpreadsheetDocument, cell As Cell) As String
Try
If IsNothing(cell.CellValue) Then
Return ""
End If
Dim value As String = cell.CellValue.InnerXml
If cell.DataType IsNot Nothing AndAlso cell.DataType.Value = CellValues.SharedString Then
Dim stringTablePart As SharedStringTablePart = document.WorkbookPart.SharedStringTablePart
Return stringTablePart.SharedStringTable.ChildElements(Int32.Parse(value)).InnerText
Else
Return value
End If
Catch ex As Exception
Return ""
End Try
End Function
Cell cell = row.Descendants<Cell>().ElementAt(i);
int index = CellReferenceToIndex(cell);
tempRow[index] = GetCellValue(spreadSheetDocument, cell);
并添加此方法：
private static int CellReferenceToIndex(Cell cell)
{
int index = 0;
string reference = cell.CellReference.ToString().ToUpper();
foreach (char ch in reference)
{
if (Char.IsLetter(ch))
{
int value = (int)ch - (int)'A';
index = (index == 0) ? value : ((index + 1) * 26) + value;
}
else
return index;
}
return index;
}
-1
这是我的完整解决方案，其中也考虑了空单元 .
public static class ExcelHelper
{
//To get the value of the cell, even it's empty. Unable to use loop by index
private static string GetCellValue(WorkbookPart wbPart, List<Cell> theCells, string cellColumnReference)
{
Cell theCell = null;
string value = "";
foreach (Cell cell in theCells)
{
if (cell.CellReference.Value.StartsWith(cellColumnReference))
{
theCell = cell;
break;
}
}
if (theCell != null)
{
value = theCell.InnerText;
// If the cell represents an integer number, you are done.
// For dates, this code returns the serialized value that represents the date. The code handles strings and
// Booleans individually. For shared strings, the code looks up the corresponding value in the shared string table. For Booleans, the code converts the value into the words TRUE or FALSE.
if (theCell.DataType != null)
{
switch (theCell.DataType.Value)
{
case CellValues.SharedString:
// For shared strings, look up the value in the shared strings table.
var stringTable = wbPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();
// If the shared string table is missing, something is wrong. Return the index that is in the cell. Otherwise, look up the correct text in the table.
if (stringTable != null)
{
value = stringTable.SharedStringTable.ElementAt(int.Parse(value)).InnerText;
}
break;
case CellValues.Boolean:
switch (value)
{
case "0":
value = "FALSE";
break;
default:
value = "TRUE";
break;
}
break;
}
}
}
return value;
}
private static string GetCellValue(WorkbookPart wbPart, List<Cell> theCells, int index)
{
return GetCellValue(wbPart, theCells, GetExcelColumnName(index));
}
private static string GetExcelColumnName(int columnNumber)
{
int dividend = columnNumber;
string columnName = String.Empty;
int modulo;
while (dividend > 0)
{
modulo = (dividend - 1) % 26;
columnName = Convert.ToChar(65 + modulo).ToString() + columnName;
dividend = (int)((dividend - modulo) / 26);
}
return columnName;
}
//Only xlsx files
public static DataTable GetDataTableFromExcelFile(string filePath, string sheetName = "")
{
DataTable dt = new DataTable();
try
{
using (SpreadsheetDocument document = SpreadsheetDocument.Open(filePath, false))
{
WorkbookPart wbPart = document.WorkbookPart;
IEnumerable<Sheet> sheets = document.WorkbookPart.Workbook.GetFirstChild<Sheets>().Elements<Sheet>();
string sheetId = sheetName != "" ? sheets.Where(q => q.Name == sheetName).First().Id.Value : sheets.First().Id.Value;
WorksheetPart wsPart = (WorksheetPart)wbPart.GetPartById(sheetId);
SheetData sheetdata = wsPart.Worksheet.Elements<SheetData>().FirstOrDefault();
int totalHeaderCount = sheetdata.Descendants<Row>().ElementAt(0).Descendants<Cell>().Count();
//Get the header
for (int i = 1; i <= totalHeaderCount; i++)
{
dt.Columns.Add(GetCellValue(wbPart, sheetdata.Descendants<Row>().ElementAt(0).Elements<Cell>().ToList(), i));
}
foreach (Row r in sheetdata.Descendants<Row>())
{
if (r.RowIndex > 1)
{
DataRow tempRow = dt.NewRow();
//Always get from the header count, because the index of the row changes where empty cell is not counted
for (int i = 1; i <= totalHeaderCount; i++)
{
tempRow[i - 1] = GetCellValue(wbPart, r.Elements<Cell>().ToList(), i);
}
dt.Rows.Add(tempRow);
}
}
}
}
catch (Exception ex)
{
}
return dt;
}
}
6 回答
我认为这应该做你所要求的 . 如果您有共享字符串，那么另一个函数就是处理，我假设您在列 Headers 中执行此操作 . 不确定这是完美的，但我希望它有所帮助 .
嗨以上代码工作正常，除了一个更改
替换下面的代码行
同
如果使用（i-1），它将抛出异常：
此解决方案适用于没有空单元格的电子表格 .
要处理空单元格，您需要替换此行：
用这样的东西：
并添加此方法：
这是我的完整解决方案，其中也考虑了空单元 .
如果rows值为null或为空，则获取值错误的工作 .
所有列都填充了数据，如果它正常工作 . 但也许所有行都没有