使用 Open Xml 写入 Excel 在某些列之后出现问题
Writing to Excel with Open Xml gives issue after certain columns
我正在使用 C# 打开 XML 格式 SDK 2.0，尝试编写一个 Excel 报告文件。我的问题是当我越过 Z 列（达到 AA）时，文件已损坏且用户无法手动打开。
有什么想法吗？
static void Main(string[] args)
{
PortfolioReport report = new PortfolioReport("Keywords");
report.CreateReport();
}
public PortfolioReport(string client)
{
string newFileName = path + client + ".xlsx";
if (File.Exists(newFileName))
{
File.Delete(newFileName);
}
FileInfo newFile = new FileInfo(newFileName);
using (ExcelPackage package = new ExcelPackage(newFile))
{
ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Keywords");
package.Save();
}
document = SpreadsheetDocument.Open(newFileName, true);
wbPart = document.WorkbookPart;
}
static readonly string[] Columns = new[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "AM", "AN", "AO", "AP", "AQ", "AR", "AS", "AT", "AU", "AV", "AW", "AX", "AY", "AZ", "BA", "BB", "BC", "BD", "BE", "BF", "BG", "BH" };
public static string IndexToColumn(int index)
{
if (index < 0)
throw new IndexOutOfRangeException("index must be a positive number");
return Columns[index];
}
public static object GetPropValue(object src, string propName)
{
return src.GetType().GetProperty(propName).GetValue(src, null);
}
// Create a new Portfolio report
public void CreateReport()
{
string wsName = "Report Summary";
wbPart.Workbook.Descendants<Sheet>().FirstOrDefault().Name = wsName;
var currentUser = UsersInfo.Keywords;
//set the domainAge
KeywordsModule.SetYearsAndMonths(currentUser.Keywords);
//set the url site relevency in words
KeywordsModule.SetAverageUrlSiteRelevencyLiteral(currentUser.Keywords);
//set a model for the excel which will convert the keyword to the custom model according to gui names
List<KeywordModelForExcelExport> keywordsForExports = KeywordsModule.PrepreKeywordSforExport(currentUser.Keywords);
//we set the column headings
var properties = typeof(KeywordModelForExcelExport).GetProperties();
for (int i = 0; i < properties.Length; i++)
{
var cell = IndexToColumn(i) + 1;
UpdateValue(wsName, cell, properties[i].Name, 0, true);
}
//now we set the keyword values
int row = 2;
foreach (var keywordForExport in keywordsForExports)
{
for (int i = 0; i < properties.Length; i++)
{
var val = GetPropValue(keywordForExport, properties[i].Name);
var cell = IndexToColumn(i) + row;
if (val != null)
UpdateValue(wsName, cell, val.ToString(), 0, true);
}
row++;
}
// All done! Close and save the document.
document.Close();
}
// Given a Worksheet and an address (like "AZ254"), either return a cell reference, or
// create the cell reference and return it.
private Cell InsertCellInWorksheet(Worksheet ws, string addressName)
{
SheetData sheetData = ws.GetFirstChild<SheetData>();
Cell cell = null;
UInt32 rowNumber = GetRowIndex(addressName);
Row row = GetRow(sheetData, rowNumber);
// If the cell you need already exists, return it.
// If there is not a cell with the specified column name, insert one.
Cell refCell = row.Elements<Cell>().
Where(c => c.CellReference.Value == addressName).FirstOrDefault();
if (refCell != null)
{
cell = refCell;
}
else
{
cell = CreateCell(row, addressName);
}
return cell;
}
private Cell CreateCell(Row row, String address)
{
Cell cellResult;
Cell refCell = null;
// Cells must be in sequential order according to CellReference. Determine where to insert the new cell.
foreach (Cell cell in row.Elements<Cell>())
{
if (string.Compare(cell.CellReference.Value, address, true) > 0)
{
refCell = cell;
break;
}
}
cellResult = new Cell();
cellResult.CellReference = address;
row.InsertBefore(cellResult, refCell);
return cellResult;
}
private Row GetRow(SheetData wsData, UInt32 rowIndex)
{
var row = wsData.Elements<Row>().
Where(r => r.RowIndex.Value == rowIndex).FirstOrDefault();
if (row == null)
{
row = new Row();
row.RowIndex = rowIndex;
wsData.Append(row);
}
return row;
}
private UInt32 GetRowIndex(string address)
{
string rowPart;
UInt32 l;
UInt32 result = 0;
for (int i = 0; i < address.Length; i++)
{
if (UInt32.TryParse(address.Substring(i, 1), out l))
{
rowPart = address.Substring(i, address.Length - i);
if (UInt32.TryParse(rowPart, out l))
{
result = l;
break;
}
}
}
return result;
}
public bool UpdateValue(string sheetName, string addressName, string value, UInt32Value styleIndex, bool isString)
{
// Assume failure.
bool updated = false;
Sheet sheet = wbPart.Workbook.Descendants<Sheet>().Where((s) => s.Name == sheetName).FirstOrDefault();
if (sheet != null)
{
Worksheet ws = ((WorksheetPart)(wbPart.GetPartById(sheet.Id))).Worksheet;
Cell cell = InsertCellInWorksheet(ws, addressName);
if (isString)
{
// Either retrieve the index of an existing string,
// or insert the string into the shared string table
// and get the index of the new item.
int stringIndex = InsertSharedStringItem(wbPart, value);
cell.CellValue = new CellValue(stringIndex.ToString());
cell.DataType = new EnumValue<CellValues>(CellValues.SharedString);
}
else
{
cell.CellValue = new CellValue(value);
cell.DataType = new EnumValue<CellValues>(CellValues.Number);
}
if (styleIndex > 0)
cell.StyleIndex = styleIndex;
// Save the worksheet.
ws.Save();
updated = true;
}
return updated;
}
// Given the main workbook part, and a text value, insert the text into the shared
// string table. Create the table if necessary. If the value already exists, return
// its index. If it doesn't exist, insert it and return its new index.
private int InsertSharedStringItem(WorkbookPart wbPart, string value)
{
int index = 0;
bool found = false;
var stringTablePart = wbPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();
// If the shared string table is missing, something's wrong.
// Just return the index that you found in the cell.
// Otherwise, look up the correct text in the table.
if (stringTablePart == null)
{
// Create it.
stringTablePart = wbPart.AddNewPart<SharedStringTablePart>();
stringTablePart.SharedStringTable = new SharedStringTable();
}
var stringTable = stringTablePart.SharedStringTable;
// if (stringTable == null)
// {
// stringTable = new SharedStringTable();
// }
// Iterate through all the items in the SharedStringTable. If the text already exists, return its index.
foreach (SharedStringItem item in stringTable.Elements<SharedStringItem>())
{
if (item.InnerText == value)
{
found = true;
break;
}
index += 1;
}
if (!found)
{
stringTable.AppendChild(new SharedStringItem(new Text(value)));
stringTable.Save();
}
return index;
}
您在 CreateCell 中对 Z 之后的单元格引用进行了排序。您当前正在使用 string.Compare，但这将进行 alpha 比较，这意味着 AA1 是 在 之前 Z1 而不是在它之后。
有多种方法可以解决此问题 - 一种方法是将 cellReference 转换为列索引，然后比较它们而不是直接比较单元格引用。例如：
private static int? GetColumnIndex(string cellRef)
{
if (string.IsNullOrEmpty(cellRef))
return null;
cellRef = cellRef.ToUpper();
int columnIndex = -1;
int mulitplier = 1;
foreach (char c in cellRef.ToCharArray().Reverse())
{
if (char.IsLetter(c))
{
columnIndex += mulitplier * ((int)c - 64);
mulitplier = mulitplier * 26;
}
}
return columnIndex;
}
然后代替
if (string.Compare(cell.CellReference.Value, address, true) > 0)
{
refCell = cell;
break;
}
你可以做到
if (GetColumnIndex(cell.CellReference.Value) > GetColumnIndex(address))
{
refCell = cell;
break;
}
我正在使用 C# 打开 XML 格式 SDK 2.0，尝试编写一个 Excel 报告文件。我的问题是当我越过 Z 列（达到 AA）时，文件已损坏且用户无法手动打开。 有什么想法吗？
static void Main(string[] args)
{
PortfolioReport report = new PortfolioReport("Keywords");
report.CreateReport();
}
public PortfolioReport(string client)
{
string newFileName = path + client + ".xlsx";
if (File.Exists(newFileName))
{
File.Delete(newFileName);
}
FileInfo newFile = new FileInfo(newFileName);
using (ExcelPackage package = new ExcelPackage(newFile))
{
ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Keywords");
package.Save();
}
document = SpreadsheetDocument.Open(newFileName, true);
wbPart = document.WorkbookPart;
}
static readonly string[] Columns = new[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "AM", "AN", "AO", "AP", "AQ", "AR", "AS", "AT", "AU", "AV", "AW", "AX", "AY", "AZ", "BA", "BB", "BC", "BD", "BE", "BF", "BG", "BH" };
public static string IndexToColumn(int index)
{
if (index < 0)
throw new IndexOutOfRangeException("index must be a positive number");
return Columns[index];
}
public static object GetPropValue(object src, string propName)
{
return src.GetType().GetProperty(propName).GetValue(src, null);
}
// Create a new Portfolio report
public void CreateReport()
{
string wsName = "Report Summary";
wbPart.Workbook.Descendants<Sheet>().FirstOrDefault().Name = wsName;
var currentUser = UsersInfo.Keywords;
//set the domainAge
KeywordsModule.SetYearsAndMonths(currentUser.Keywords);
//set the url site relevency in words
KeywordsModule.SetAverageUrlSiteRelevencyLiteral(currentUser.Keywords);
//set a model for the excel which will convert the keyword to the custom model according to gui names
List<KeywordModelForExcelExport> keywordsForExports = KeywordsModule.PrepreKeywordSforExport(currentUser.Keywords);
//we set the column headings
var properties = typeof(KeywordModelForExcelExport).GetProperties();
for (int i = 0; i < properties.Length; i++)
{
var cell = IndexToColumn(i) + 1;
UpdateValue(wsName, cell, properties[i].Name, 0, true);
}
//now we set the keyword values
int row = 2;
foreach (var keywordForExport in keywordsForExports)
{
for (int i = 0; i < properties.Length; i++)
{
var val = GetPropValue(keywordForExport, properties[i].Name);
var cell = IndexToColumn(i) + row;
if (val != null)
UpdateValue(wsName, cell, val.ToString(), 0, true);
}
row++;
}
// All done! Close and save the document.
document.Close();
}
// Given a Worksheet and an address (like "AZ254"), either return a cell reference, or
// create the cell reference and return it.
private Cell InsertCellInWorksheet(Worksheet ws, string addressName)
{
SheetData sheetData = ws.GetFirstChild<SheetData>();
Cell cell = null;
UInt32 rowNumber = GetRowIndex(addressName);
Row row = GetRow(sheetData, rowNumber);
// If the cell you need already exists, return it.
// If there is not a cell with the specified column name, insert one.
Cell refCell = row.Elements<Cell>().
Where(c => c.CellReference.Value == addressName).FirstOrDefault();
if (refCell != null)
{
cell = refCell;
}
else
{
cell = CreateCell(row, addressName);
}
return cell;
}
private Cell CreateCell(Row row, String address)
{
Cell cellResult;
Cell refCell = null;
// Cells must be in sequential order according to CellReference. Determine where to insert the new cell.
foreach (Cell cell in row.Elements<Cell>())
{
if (string.Compare(cell.CellReference.Value, address, true) > 0)
{
refCell = cell;
break;
}
}
cellResult = new Cell();
cellResult.CellReference = address;
row.InsertBefore(cellResult, refCell);
return cellResult;
}
private Row GetRow(SheetData wsData, UInt32 rowIndex)
{
var row = wsData.Elements<Row>().
Where(r => r.RowIndex.Value == rowIndex).FirstOrDefault();
if (row == null)
{
row = new Row();
row.RowIndex = rowIndex;
wsData.Append(row);
}
return row;
}
private UInt32 GetRowIndex(string address)
{
string rowPart;
UInt32 l;
UInt32 result = 0;
for (int i = 0; i < address.Length; i++)
{
if (UInt32.TryParse(address.Substring(i, 1), out l))
{
rowPart = address.Substring(i, address.Length - i);
if (UInt32.TryParse(rowPart, out l))
{
result = l;
break;
}
}
}
return result;
}
public bool UpdateValue(string sheetName, string addressName, string value, UInt32Value styleIndex, bool isString)
{
// Assume failure.
bool updated = false;
Sheet sheet = wbPart.Workbook.Descendants<Sheet>().Where((s) => s.Name == sheetName).FirstOrDefault();
if (sheet != null)
{
Worksheet ws = ((WorksheetPart)(wbPart.GetPartById(sheet.Id))).Worksheet;
Cell cell = InsertCellInWorksheet(ws, addressName);
if (isString)
{
// Either retrieve the index of an existing string,
// or insert the string into the shared string table
// and get the index of the new item.
int stringIndex = InsertSharedStringItem(wbPart, value);
cell.CellValue = new CellValue(stringIndex.ToString());
cell.DataType = new EnumValue<CellValues>(CellValues.SharedString);
}
else
{
cell.CellValue = new CellValue(value);
cell.DataType = new EnumValue<CellValues>(CellValues.Number);
}
if (styleIndex > 0)
cell.StyleIndex = styleIndex;
// Save the worksheet.
ws.Save();
updated = true;
}
return updated;
}
// Given the main workbook part, and a text value, insert the text into the shared
// string table. Create the table if necessary. If the value already exists, return
// its index. If it doesn't exist, insert it and return its new index.
private int InsertSharedStringItem(WorkbookPart wbPart, string value)
{
int index = 0;
bool found = false;
var stringTablePart = wbPart.GetPartsOfType<SharedStringTablePart>().FirstOrDefault();
// If the shared string table is missing, something's wrong.
// Just return the index that you found in the cell.
// Otherwise, look up the correct text in the table.
if (stringTablePart == null)
{
// Create it.
stringTablePart = wbPart.AddNewPart<SharedStringTablePart>();
stringTablePart.SharedStringTable = new SharedStringTable();
}
var stringTable = stringTablePart.SharedStringTable;
// if (stringTable == null)
// {
// stringTable = new SharedStringTable();
// }
// Iterate through all the items in the SharedStringTable. If the text already exists, return its index.
foreach (SharedStringItem item in stringTable.Elements<SharedStringItem>())
{
if (item.InnerText == value)
{
found = true;
break;
}
index += 1;
}
if (!found)
{
stringTable.AppendChild(new SharedStringItem(new Text(value)));
stringTable.Save();
}
return index;
}
您在 CreateCell 中对 Z 之后的单元格引用进行了排序。您当前正在使用 string.Compare，但这将进行 alpha 比较，这意味着 AA1 是 在 之前 Z1 而不是在它之后。
有多种方法可以解决此问题 - 一种方法是将 cellReference 转换为列索引，然后比较它们而不是直接比较单元格引用。例如：
private static int? GetColumnIndex(string cellRef)
{
if (string.IsNullOrEmpty(cellRef))
return null;
cellRef = cellRef.ToUpper();
int columnIndex = -1;
int mulitplier = 1;
foreach (char c in cellRef.ToCharArray().Reverse())
{
if (char.IsLetter(c))
{
columnIndex += mulitplier * ((int)c - 64);
mulitplier = mulitplier * 26;
}
}
return columnIndex;
}
然后代替
if (string.Compare(cell.CellReference.Value, address, true) > 0)
{
refCell = cell;
break;
}
你可以做到
if (GetColumnIndex(cell.CellReference.Value) > GetColumnIndex(address))
{
refCell = cell;
break;
}