This source code:
using (ExcelPackage xlPackage = new ExcelPackage(newFile, template))
{
ExcelWorksheet worksheet = null;
foreach (DataTable dt in dsExcel.Tables)
{
worksheet = xlPackage.Workbook.Worksheets.Add(dt.TableName);
worksheet = xlPackage.Workbook.Worksheets[dt.TableName];
ExcelCell cell;
const int startRow = 9;
int row = startRow;
int col = 1;
foreach (DataRow dr in dt.Rows)
{
foreach (DataColumn dc in dt.Columns)
{
worksheet.Cell(row, col).Value = dr[dc].ToString();
col++;
}
col = 1;
row++;
}
}
xlPackage.Save();
}
I am getting error at xlpackage.save i.e. object reference not set to an instance.
How to generate an excel file with multiplesheets using an excel template?
Looks like this is a bug, documented here. Unfortunately, it looks like the fix is to edit the source code of ExcelPackage itself.
Related
I am reading the .xlsx file using DocumentFormat.openxml nuget pkg. I am trying to read the date cell[G2] and data from [b5] to [m5]
static void Main(string[] args)
{
string sFileTypeError = string.Empty;
string myFilePath = #"C:\Landing\file.xlsx";
//string ext = Path.GetExtension(myFilePath);
var fileName = Path.GetFileName(myFilePath);
var fileExtension = Path.GetExtension(fileName);
if ((fileExtension != ".xlsx") && (fileExtension != ".xls"))
sFileTypeError = "Invalid file. \n\nPlease browse a correct Excel file to upload.";
else
{
using (SpreadsheetDocument doc = SpreadsheetDocument.Open(myFilePath, false))
{
IEnumerable<Sheet> sheets = doc.WorkbookPart.Workbook.GetFirstChild<DocumentFormat.OpenXml.Spreadsheet.Sheets>().Elements<Sheet>();
WorksheetPart worksheetPart = (WorksheetPart)doc.WorkbookPart.GetPartById(sheets.First().Id.Value);
IEnumerable<Row> rows = worksheetPart.Worksheet.GetFirstChild<SheetData>().Descendants<Row>();
}
}
}
Please let me know how can read this. Thanks
I you want to go row by row and then cell by cell you can do this :
foreach (Row actualRow in rows)
{
IEnumerable<Cell> cells = actualRow.Descendants<Cell>();
foreach (Cell actualCell in cells)
{
// It gets the good value if it's not in the shared string table
string value = actualCell.CellValue.Text;
}
}
I'm using NPOI Excel Library to generate a Excel file, in that Excel file i'm explicitly define column type for Columns like Date,String etc.
Im using the following code to achive this.
var row = sheet.CreateRow(currentNPOIRowIndex++);
for (var colIndex = 0; colIndex < exportData.Columns.Count; colIndex++)
{
ICell cell = null;
cell = row.CreateCell(colIndex);
if (exportData.Columns[colIndex].DataType == typeof(DateTime))
{
if (exportData.Rows[rowIndex][colIndex].ToString() != "")
{
cell.SetCellValue((DateTime)exportData.Rows[rowIndex][colIndex]);
cell.CellStyle = (NPOI.HSSF.UserModel.HSSFCellStyle)book.CreateCellStyle();
cell.CellStyle.DataFormat = book.CreateDataFormat().GetFormat("yyyyMMdd HH:mm:ss");
cell = null;
}
else
cell.SetCellValue(exportData.Rows[rowIndex][colIndex].ToString());
}
else
cell.SetCellValue(exportData.Rows[rowIndex][colIndex].ToString());
}
}
The above code works fine for 42 rows i.e. it correctly set the Column Type,but after 42 rows Column Type doesn't apply.
Any help will be highly appreciated.
you'll required to set default column style if you want to set column format for all cells of that column. Please see the below example from xssf format. Syntax may differ for your hssf format but it will give you idea what you are missing.
I am providing you from my working code. I am using NPOI version 2.2.1.0.
can you comment line //cell = null;
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = (XSSFSheet)workbook.CreateSheet("Template");
XSSFFont defaultFont = (XSSFFont)workbook.CreateFont();
defaultFont.FontHeightInPoints = (short)10;
XSSFCellStyle headerStyle = (XSSFCellStyle)workbook.CreateCellStyle();
headerStyle.WrapText = true;
XSSFCellStyle defaultStyle = (XSSFCellStyle)workbook.CreateCellStyle();
XSSFDataFormat defaultDataFormat = (XSSFDataFormat)workbook.CreateDataFormat();
defaultStyle.SetDataFormat(defaultDataFormat.GetFormat("000-000-0000"));
defaultStyle.FillBackgroundColor = IndexedColors.LightYellow.Index;
defaultStyle.FillForegroundColor = IndexedColors.LightTurquoise.Index;
defaultStyle.SetFont(defaultFont);
var row = sheet.CreateRow(0);
for (int headerCount = 0; headerCount < headers.Count(); headerCount++)
{
row.CreateCell(headerCount).SetCellValue(headers[headerCount]);
row.Cells[headerCount].CellStyle = headerStyle;
sheet.SetDefaultColumnStyle(headerCount, defaultStyle);
}
I tried to read the existing excel file and copied to another path, and then i tried to insert data to the file i cloned. But I can' insert data. I don't know where I made mistake. But Here I've given my code.
Error occured in the line sheetData.InsertAt<Row>(row,++rowIndex);. Please help me out.
Package spreadsheetPackage = Package.Open(destinationFile, FileMode.Open, FileAccess.ReadWrite);
using (var document = SpreadsheetDocument.Open(spreadsheetPackage))
{
foreach (System.Data.DataTable table in ds.Tables)
{
var workbookPart = document.WorkbookPart;
var workbook = workbookPart.Workbook;
var sheet = workbookPart.Workbook.Descendants<Sheet>().FirstOrDefault();
Worksheet ws = ((WorksheetPart)(workbookPart.GetPartById(sheet.Id))).Worksheet;
SheetData sheetData = ws.GetFirstChild<SheetData>();
//Sheet sheet = sheets.FirstOrDefault();
if(sheet==null)
throw new Exception("No sheed found in the template file. Please add the sheet");
int rowIndex = 10, colIndex = 0;
bool flag = false;
var worksheetPart = (WorksheetPart)workbookPart.GetPartById(sheet.Id);
var sharedStringPart = workbookPart.SharedStringTablePart;
var values = sharedStringPart.SharedStringTable.Elements<SharedStringItem>().ToArray();
var rows = worksheetPart.Worksheet.Descendants<Row>();
List<String> columns = new List<string>();
foreach (System.Data.DataColumn column in table.Columns)
{
columns.Add(column.ColumnName);
}
foreach (System.Data.DataRow dsrow in table.Rows)
{
Row row = new Row();
foreach (String col in columns)
{
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString());
row.AppendChild<Cell>(cell);
}
sheetData.InsertAt<Row>(row,++rowIndex);
}
}
Before you append Row, you should mentioned the row index to the instance...
row.RowIndex = (UInt32)rowIndex++;
I need all Excel sheet Names (what r all contains the datas) using POI jar.
Like jxl jar - getSheetNames()
You don't say how you want them, so I'll guess at a list. You just need to iterate over the sheet indicies, getting the name for each. Your code would be something like:
File myFile = new File("/path/to/excel.xls");
Workbook wb = WorkbookFactory.create(myFile);
List<String> sheetNames = new ArrayList<String>();
for (int i=0; i<wb.getNumberOfSheets(); i++) {
sheetNames.add( wb.getSheetName(i) );
}
FileInputStream fis = new FileInputStream("C:\Users\Usr\Desktop\TestData.xlsx");
XSSFWorkbook wb = new XSSFWorkbook(fis);
int sheetcount = wb.getNumberOfSheets();
System.out.println("sheetcount: "+sheetcount);
for(int i=0; i<sheetcount;i++)
{
System.out.print(wb.getSheetName(i)+ " ");
}
I am using openxml to create an excel report. The openxml operates on a template excel file using named ranges.
The client requires a totals row at the end of the list of rows. Sounds like a reasonable request!!
However, the data table I'm returning from the db can contain any number of rows. Using template rows and 'InsertBeforeSelf', my totals row is getting overridden.
My question is, using openxml, how can I insert rows into the spreadsheet, causing the totals row to be be moved down each time a row is inserted?
Regards ...
Assuming you're using the SDK 2.0, I did something similiar by using this function:
private static Row CreateRow(Row refRow, SheetData sheetData)
{
uint rowIndex = refRow.RowIndex.Value;
uint newRowIndex;
var newRow = (Row)refRow.Clone();
/*IEnumerable<Row> rows = sheetData.Descendants<Row>().Where(r => r.RowIndex.Value >= rowIndex);
foreach (Row row in rows)
{
newRowIndex = System.Convert.ToUInt32(row.RowIndex.Value + 1);
foreach (Cell cell in row.Elements<Cell>())
{
string cellReference = cell.CellReference.Value;
cell.CellReference = new StringValue(cellReference.Replace(row.RowIndex.Value.ToString(), newRowIndex.ToString()));
}
row.RowIndex = new UInt32Value(newRowIndex);
}*/
sheetData.InsertBefore(newRow, refRow);
return newRow;
}
I'm not sure how you were doing it with InsertBeforeSelf before, so maybe this isn't much of an improvement, but this has worked for me. I was thinking you could just use your totals row as the reference row. (The commented out part is for if you had rows after your reference row that you wanted to maintain. I made some modifications, but it mostly comes from this thread: http://social.msdn.microsoft.com/Forums/en-US/oxmlsdk/thread/65c9ca1c-25d4-482d-8eb3-91a3512bb0ac)
Since it returns the new row, you can use that object then to edit the cell values with the data from the database. I hope this is at least somewhat helpful to anyone trying to do this...
[Can someone with more points please put this text as a comment for the M_R_H's Answer.]
The solution that M_R_H gave helped me, but introduces a new bug to the problem. If you use the given CreateRow method as-is, if any of the rows being moved/re-referenced have formulas the CalcChain.xml (in the package) will be broken.
I added the following code to the proposed CreateRow solution. It still doesn't fix the problem, because, I think this code is only fixing the currently-being-copied row reference:
if (cell.CellFormula != null) {
string cellFormula = cell.CellFormula.Text;
cell.CellFormula = new CellFormula(cellFormula.Replace(row.RowIndex.Value.ToString(), newRowIndex.ToString()));
}
What is the proper way to fix/update CalcChain.xml?
PS: SheetData can be gotten from your worksheet as:
worksheet.GetFirstChild<SheetData>();
You have to loop all rows and cells under the inserted row,change its rowindex and cellreference. I guess OpenXml not so smart that help you change index automatically.
static void InsertRow(string sheetName, WorkbookPart wbPart, uint rowIndex)
{
Sheet sheet = wbPart.Workbook.Descendants<Sheet>().Where((s) => s.Name == sheetName).FirstOrDefault();
if (sheet != null)
{
Worksheet ws = ((WorksheetPart)(wbPart.GetPartById(sheet.Id))).Worksheet;
SheetData sheetData = ws.WorksheetPart.Worksheet.GetFirstChild<SheetData>();
Row refRow = GetRow(sheetData, rowIndex);
++rowIndex;
Cell cell1 = new Cell() { CellReference = "A" + rowIndex };
CellValue cellValue1 = new CellValue();
cellValue1.Text = "";
cell1.Append(cellValue1);
Row newRow = new Row()
{
RowIndex = rowIndex
};
newRow.Append(cell1);
for (int i = (int)rowIndex; i <= sheetData.Elements<Row>().Count(); i++)
{
var row = sheetData.Elements<Row>().Where(r => r.RowIndex.Value == i).FirstOrDefault();
row.RowIndex++;
foreach (Cell c in row.Elements<Cell>())
{
string refer = c.CellReference.Value;
int num = Convert.ToInt32(Regex.Replace(refer, #"[^\d]*", ""));
num++;
string letters = Regex.Replace(refer, #"[^A-Z]*", "");
c.CellReference.Value = letters + num;
}
}
sheetData.InsertAfter(newRow, refRow);
//ws.Save();
}
}
static 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;
}
Above solution got from:How to insert the row in exisiting template in open xml. There is a clear explanation might help you a lot.