How to create excel file with multiple sheets from DataSet using C# - excel

How to create excel file with multiple sheets from DataSet using C#?
I have successfully created an excel file with single sheet. But I am not able to do that for multiple sheets.

Here is a simple C# class that programatically creates an Excel WorkBook and adds two sheets to it, and then populates both sheets. Finally, it saves the WorkBook to a file in the application root directory so that you can inspect the results...
public class Tyburn1
{
object missing = Type.Missing;
public Tyburn1()
{
Excel.Application oXL = new Excel.Application();
oXL.Visible = false;
Excel.Workbook oWB = oXL.Workbooks.Add(missing);
Excel.Worksheet oSheet = oWB.ActiveSheet as Excel.Worksheet;
oSheet.Name = "The first sheet";
oSheet.Cells[1, 1] = "Something";
Excel.Worksheet oSheet2 = oWB.Sheets.Add(missing, missing, 1, missing)
as Excel.Worksheet;
oSheet2.Name = "The second sheet";
oSheet2.Cells[1, 1] = "Something completely different";
string fileName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)
+ "\\SoSample.xlsx";
oWB.SaveAs(fileName, Excel.XlFileFormat.xlOpenXMLWorkbook,
missing, missing, missing, missing,
Excel.XlSaveAsAccessMode.xlNoChange,
missing, missing, missing, missing, missing);
oWB.Close(missing, missing, missing);
oXL.UserControl = true;
oXL.Quit();
}
}
To do this, you would need to add a reference to Microsoft.Office.Interop.Excel to your project (you may have done this already since you are creating one sheet).
The statement that adds the second sheet is...
Excel.Worksheet oSheet2 = oWB.Sheets.Add(missing, missing, 1, missing)
as Excel.Worksheet;
the '1' argument specifies a single sheet, and it can be more if you want to add several sheets at once.
Final note: the statement oXL.Visible = false; tells Excel to start in silent mode.

var groupedSheetList = UserData
.GroupBy (u => u.date)
.Select (grp => grp.ToList ())
.ToList ();
You can try this
using (var package = new ExcelPackage ())
{
foreach (var item in groupedSheetList) {
var workSheet = package.Workbook.Worksheets.Add (item[0].date);
}
}

Related

Get Excel sheet names unsorted via delphi ADO [duplicate]

I'm using OleDb to read from an excel workbook with many sheets.
I need to read the sheet names, but I need them in the order they are defined in the spreadsheet; so If I have a file that looks like this;
|_____|_____|____|____|____|____|____|____|____|
|_____|_____|____|____|____|____|____|____|____|
|_____|_____|____|____|____|____|____|____|____|
\__GERMANY__/\__UK__/\__IRELAND__/
Then I need to get the dictionary
1="GERMANY",
2="UK",
3="IRELAND"
I've tried using OleDbConnection.GetOleDbSchemaTable(), and that gives me the list of names, but it alphabetically sorts them. The alpha-sort means I don't know which sheet number a particular name corresponds to. So I get;
GERMANY, IRELAND, UK
which has changed the order of UK and IRELAND.
The reason I need it to be sorted is that I have to let the user choose a range of data by name or index; they can ask for 'all the data from GERMANY to IRELAND' or 'data from sheet 1 to sheet 3'.
Any ideas would be greatly appreciated.
if I could use the office interop classes, this would be straightforward. Unfortunately, I can't because the interop classes don't work reliably in non-interactive environments such as windows services and ASP.NET sites, so I needed to use OLEDB.
Can you not just loop through the sheets from 0 to Count of names -1? that way you should get them in the correct order.
Edit
I noticed through the comments that there are a lot of concerns about using the Interop classes to retrieve the sheet names. Therefore here is an example using OLEDB to retrieve them:
/// <summary>
/// This method retrieves the excel sheet names from
/// an excel workbook.
/// </summary>
/// <param name="excelFile">The excel file.</param>
/// <returns>String[]</returns>
private String[] GetExcelSheetNames(string excelFile)
{
OleDbConnection objConn = null;
System.Data.DataTable dt = null;
try
{
// Connection String. Change the excel file to the file you
// will search.
String connString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
"Data Source=" + excelFile + ";Extended Properties=Excel 8.0;";
// Create connection object by using the preceding connection string.
objConn = new OleDbConnection(connString);
// Open connection with the database.
objConn.Open();
// Get the data table containg the schema guid.
dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if(dt == null)
{
return null;
}
String[] excelSheets = new String[dt.Rows.Count];
int i = 0;
// Add the sheet name to the string array.
foreach(DataRow row in dt.Rows)
{
excelSheets[i] = row["TABLE_NAME"].ToString();
i++;
}
// Loop through all of the sheets if you want too...
for(int j=0; j < excelSheets.Length; j++)
{
// Query each excel sheet.
}
return excelSheets;
}
catch(Exception ex)
{
return null;
}
finally
{
// Clean up.
if(objConn != null)
{
objConn.Close();
objConn.Dispose();
}
if(dt != null)
{
dt.Dispose();
}
}
}
Extracted from Article on the CodeProject.
Since above code do not cover procedures for extracting list of sheet name for Excel 2007,following code will be applicable for both Excel(97-2003) and Excel 2007 too:
public List<string> ListSheetInExcel(string filePath)
{
OleDbConnectionStringBuilder sbConnection = new OleDbConnectionStringBuilder();
String strExtendedProperties = String.Empty;
sbConnection.DataSource = filePath;
if (Path.GetExtension(filePath).Equals(".xls"))//for 97-03 Excel file
{
sbConnection.Provider = "Microsoft.Jet.OLEDB.4.0";
strExtendedProperties = "Excel 8.0;HDR=Yes;IMEX=1";//HDR=ColumnHeader,IMEX=InterMixed
}
else if (Path.GetExtension(filePath).Equals(".xlsx")) //for 2007 Excel file
{
sbConnection.Provider = "Microsoft.ACE.OLEDB.12.0";
strExtendedProperties = "Excel 12.0;HDR=Yes;IMEX=1";
}
sbConnection.Add("Extended Properties",strExtendedProperties);
List<string> listSheet = new List<string>();
using (OleDbConnection conn = new OleDbConnection(sbConnection.ToString()))
{
conn.Open();
DataTable dtSheet = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
foreach (DataRow drSheet in dtSheet.Rows)
{
if (drSheet["TABLE_NAME"].ToString().Contains("$"))//checks whether row contains '_xlnm#_FilterDatabase' or sheet name(i.e. sheet name always ends with $ sign)
{
listSheet.Add(drSheet["TABLE_NAME"].ToString());
}
}
}
return listSheet;
}
Above function returns list of sheet in particular excel file for both excel type(97,2003,2007).
Can't find this in actual MSDN documentation, but a moderator in the forums said
I am afraid that OLEDB does not preserve the sheet order as they were in Excel
Excel Sheet Names in Sheet Order
Seems like this would be a common enough requirement that there would be a decent workaround.
This is short, fast, safe, and usable...
public static List<string> ToExcelsSheetList(string excelFilePath)
{
List<string> sheets = new List<string>();
using (OleDbConnection connection =
new OleDbConnection((excelFilePath.TrimEnd().ToLower().EndsWith("x"))
? "Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" + excelFilePath + "';" + "Extended Properties='Excel 12.0 Xml;HDR=YES;'"
: "provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + excelFilePath + "';Extended Properties=Excel 8.0;"))
{
connection.Open();
DataTable dt = connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
foreach (DataRow drSheet in dt.Rows)
if (drSheet["TABLE_NAME"].ToString().Contains("$"))
{
string s = drSheet["TABLE_NAME"].ToString();
sheets.Add(s.StartsWith("'")?s.Substring(1, s.Length - 3): s.Substring(0, s.Length - 1));
}
connection.Close();
}
return sheets;
}
Another way:
a xls(x) file is just a collection of *.xml files stored in a *.zip container.
unzip the file "app.xml" in the folder docProps.
<?xml version="1.0" encoding="UTF-8" standalone="true"?>
-<Properties xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes" xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties">
<TotalTime>0</TotalTime>
<Application>Microsoft Excel</Application>
<DocSecurity>0</DocSecurity>
<ScaleCrop>false</ScaleCrop>
-<HeadingPairs>
-<vt:vector baseType="variant" size="2">
-<vt:variant>
<vt:lpstr>Arbeitsblätter</vt:lpstr>
</vt:variant>
-<vt:variant>
<vt:i4>4</vt:i4>
</vt:variant>
</vt:vector>
</HeadingPairs>
-<TitlesOfParts>
-<vt:vector baseType="lpstr" size="4">
<vt:lpstr>Tabelle3</vt:lpstr>
<vt:lpstr>Tabelle4</vt:lpstr>
<vt:lpstr>Tabelle1</vt:lpstr>
<vt:lpstr>Tabelle2</vt:lpstr>
</vt:vector>
</TitlesOfParts>
<Company/>
<LinksUpToDate>false</LinksUpToDate>
<SharedDoc>false</SharedDoc>
<HyperlinksChanged>false</HyperlinksChanged>
<AppVersion>14.0300</AppVersion>
</Properties>
The file is a german file (Arbeitsblätter = worksheets).
The table names (Tabelle3 etc) are in the correct order. You just need to read these tags;)
regards
I have created the below function using the information provided in the answer from #kraeppy (https://stackoverflow.com/a/19930386/2617732). This requires the .net framework v4.5 to be used and requires a reference to System.IO.Compression. This only works for xlsx files and not for the older xls files.
using System.IO.Compression;
using System.Xml;
using System.Xml.Linq;
static IEnumerable<string> GetWorksheetNamesOrdered(string fileName)
{
//open the excel file
using (FileStream data = new FileStream(fileName, FileMode.Open))
{
//unzip
ZipArchive archive = new ZipArchive(data);
//select the correct file from the archive
ZipArchiveEntry appxmlFile = archive.Entries.SingleOrDefault(e => e.FullName == "docProps/app.xml");
//read the xml
XDocument xdoc = XDocument.Load(appxmlFile.Open());
//find the titles element
XElement titlesElement = xdoc.Descendants().Where(e => e.Name.LocalName == "TitlesOfParts").Single();
//extract the worksheet names
return titlesElement
.Elements().Where(e => e.Name.LocalName == "vector").Single()
.Elements().Where(e => e.Name.LocalName == "lpstr")
.Select(e => e.Value);
}
}
I like the idea of #deathApril to name the sheets as 1_Germany, 2_UK, 3_IRELAND. I also got your issue to do this rename for hundreds of sheets. If you don't have a problem to rename the sheet name then you can use this macro to do it for you. It will take less than seconds to rename all sheet names. unfortunately ODBC, OLEDB return the sheet name order by asc. There is no replacement for that. You have to either use COM or rename your name to be in the order.
Sub Macro1()
'
' Macro1 Macro
'
'
Dim i As Integer
For i = 1 To Sheets.Count
Dim prefix As String
prefix = i
If Len(prefix) < 4 Then
prefix = "000"
ElseIf Len(prefix) < 3 Then
prefix = "00"
ElseIf Len(prefix) < 2 Then
prefix = "0"
End If
Dim sheetName As String
sheetName = Sheets(i).Name
Dim names
names = Split(sheetName, "-")
If (UBound(names) > 0) And IsNumeric(names(0)) Then
'do nothing
Else
Sheets(i).Name = prefix & i & "-" & Sheets(i).Name
End If
Next
End Sub
UPDATE:
After reading #SidHoland comment regarding BIFF an idea flashed. The following steps can be done through code. Don't know if you really want to do that to get the sheet names in the same order. Let me know if you need help to do this through code.
1. Consider XLSX as a zip file. Rename *.xlsx into *.zip
2. Unzip
3. Go to unzipped folder root and open /docprops/app.xml
4. This xml contains the sheet name in the same order of what you see.
5. Parse the xml and get the sheet names
UPDATE:
Another solution - NPOI might be helpful here
http://npoi.codeplex.com/
FileStream file = new FileStream(#"yourexcelfilename", FileMode.Open, FileAccess.Read);
HSSFWorkbook hssfworkbook = new HSSFWorkbook(file);
for (int i = 0; i < hssfworkbook.NumberOfSheets; i++)
{
Console.WriteLine(hssfworkbook.GetSheetName(i));
}
file.Close();
This solution works for xls. I didn't try xlsx.
Thanks,
Esen
This worked for me. Stolen from here: How do you get the name of the first page of an excel workbook?
object opt = System.Reflection.Missing.Value;
Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
Excel.Workbook workbook = app.Workbooks.Open(WorkBookToOpen,
opt, opt, opt, opt, opt, opt, opt,
opt, opt, opt, opt, opt, opt, opt);
Excel.Worksheet worksheet = workbook.Worksheets[1] as Microsoft.Office.Interop.Excel.Worksheet;
string firstSheetName = worksheet.Name;
Try this. Here is the code to get the sheet names in order.
private Dictionary<int, string> GetExcelSheetNames(string fileName)
{
Excel.Application _excel = null;
Excel.Workbook _workBook = null;
Dictionary<int, string> excelSheets = new Dictionary<int, string>();
try
{
object missing = Type.Missing;
object readOnly = true;
Excel.XlFileFormat.xlWorkbookNormal
_excel = new Excel.ApplicationClass();
_excel.Visible = false;
_workBook = _excel.Workbooks.Open(fileName, 0, readOnly, 5, missing,
missing, true, Excel.XlPlatform.xlWindows, "\\t", false, false, 0, true, true, missing);
if (_workBook != null)
{
int index = 0;
foreach (Excel.Worksheet sheet in _workBook.Sheets)
{
// Can get sheet names in order they are in workbook
excelSheets.Add(++index, sheet.Name);
}
}
}
catch (Exception e)
{
return null;
}
finally
{
if (_excel != null)
{
if (_workBook != null)
_workBook.Close(false, Type.Missing, Type.Missing);
_excel.Application.Quit();
}
_excel = null;
_workBook = null;
}
return excelSheets;
}
As per MSDN, In a case of spreadsheets inside of Excel it might not work because Excel files are not real databases. So you will be not able to get the sheets name in order of their visualization in workbook.
Code to get sheets name as per their visual appearance using interop:
Add reference to Microsoft Excel 12.0 Object Library.
Following code will give the sheets name in the actual order stored in workbook, not the sorted name.
Sample Code:
using Microsoft.Office.Interop.Excel;
string filename = "C:\\romil.xlsx";
object missing = System.Reflection.Missing.Value;
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel.Workbook wb =excel.Workbooks.Open(filename, missing, missing, missing, missing,missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);
ArrayList sheetname = new ArrayList();
foreach (Microsoft.Office.Interop.Excel.Worksheet sheet in wb.Sheets)
{
sheetname.Add(sheet.Name);
}
I don't see any documentation that says the order in app.xml is guaranteed to be the order of the sheets. It PROBABLY is, but not according to the OOXML specification.
The workbook.xml file, on the other hand, includes the sheetId attribute, which does determine the sequence - from 1 to the number of sheets. This is according to the OOXML specification. workbook.xml is described as the place where the sequence of the sheets is kept.
So reading workbook.xml after it is extracted form the XLSX would be my recommendation. NOT app.xml. Instead of docProps/app.xml, use xl/workbook.xml and look at the element, as shown here -
`
<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
<fileVersion appName="xl" lastEdited="5" lowestEdited="5" rupBuild="9303" />
<workbookPr defaultThemeVersion="124226" />
- <bookViews>
<workbookView xWindow="120" yWindow="135" windowWidth="19035" windowHeight="8445" />
</bookViews>
- <sheets>
<sheet name="By song" sheetId="1" r:id="rId1" />
<sheet name="By actors" sheetId="2" r:id="rId2" />
<sheet name="By pit" sheetId="3" r:id="rId3" />
</sheets>
- <definedNames>
<definedName name="_xlnm._FilterDatabase" localSheetId="0" hidden="1">'By song'!$A$1:$O$59</definedName>
</definedNames>
<calcPr calcId="145621" />
</workbook>
`

Finding difficulty to add one more sheet in Excel workbook using Apache POI

My following 3 line code is used to create one file with sheet1(Year 2019) now would like to execute another page and need to store the result of it in same file as sheet2(Year 2020).
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet("Year 2019");
FileOutputStream fos = new FileOutputStream("C:\\Users\\dp\\Desktop\\MData1_Test_1.xlsx");
Row header_1 = sheet.createRow(rowNum[0]);
rowNum[0] = (rowNum[0] + 1);
header_1.createCell(0).setCellValue("Analytics");
Any help will be appreciated.
You can do something like this:
// open your first file
try (InputStream inp = new FileInputStream(fut.get())) {
Workbook wb = WorkbookFactory.create(inp);
// get sheet by name
Sheet sheet = wb.getSheet("Year 2019");
if (null != sheet) {
// if sheet exists => delete it
int index = wb.getSheetIndex(String name);
wb.removeSheetAt(index);
}
// create new sheet
sheet = wb.createSheet("Year 2019");
// proceed adding data
// row = sheet.createRow(0);
// row.createCell(0).setCellValue("data");
// ...
}
You can repeat these steps as many time as you need to manage as many sheets as you want.

Dynamics Ax Excel Import Error!!! sysexcellworksheet

I want to import Excel data to Microsoft Dynamics Ax. I've used this code from this site:
http://axpedia.blogspot.com.tr/2013/02/import-from-excel-file-using-x-in-ax.html
but when i try to run i get this error:
SysExcellworksheet could not start (C)\Classes\SysExcellWorksheets\cells(C)\Jobs\ProductType (line 35)
I am newbie Can you help me about this?
static void ProductType(Args _args)
{
SysExcelApplication application;
SysExcelWorkbooks workbooks;
SysExcelWorkbook workbook;
SysExcelWorksheets worksheets;
SysExcelWorksheet worksheet;
SysExcelCells cells;
COMVariantType type;
Name name;
FileName filename;
ProductType productType;
int row;
int _productTypeId;
str _productType;
str _description;
;
application = SysExcelApplication::construct();
workbooks = application.workbooks();
//specify the file path that you want to read
filename = "Path\\filename.xlsx";
try
{
workbooks.open(filename);
}
catch (Exception::Error)
{
throw error("File cannot be opened.");
}
workbook = workbooks.item(1);
worksheets = workbook.worksheets();
worksheet = worksheets.itemFromNum(4); //Here 3 is the worksheet Number
cells = worksheet.cells();
do
{
row++;
_productTypeId = any2int(cells.item(row, 1).value().toString());
_productType = cells.item(row, 2).value().bStr();
_description = cells.item(row, 3).value().bStr();
productType.ID = _productTypeId;
productType.ProductType = _productType;
productType.Description = _description;
productType.insert();
type = cells.item(row+1, 1).value().variantType();
}
while (type != COMVariantType::VT_EMPTY);
application.quit();
}
You probably translated the error, the exact error when I test this is:
SysExcelWorksheet object not initialized.
This is probably because on the following line you are trying to retrieve the 4th worksheet of the excel, but your excel file has less:
worksheet = worksheets.itemFromNum(4);
If your data is on the first worksheet, use '1' instead of '4':
worksheet = worksheets.itemFromNum(1);

How to disable gridlines in Excel using open xml C#?

I want to disable GridLines in excel and put custom borders to excel cells using open xml in C#
I have tried with below code but is throwing exception when i open the excell,
the exception is "Repaired Part: /xl/worksheets/sheet.xml part with XML error. Load error. Line 1, column 0."
using (SpreadsheetDocument xl = SpreadsheetDocument.Create(sFile, SpreadsheetDocumentType.Workbook))
{
WorkbookPart wbp = xl.AddWorkbookPart();
WorksheetPart wsp = wbp.AddNewPart<WorksheetPart>();
Workbook wb = new Workbook();
FileVersion fv = new FileVersion();
fv.ApplicationName = "Microsoft Office Excel";
Worksheet ws = new Worksheet();
SheetViews sheetViews = new SheetViews();
SheetView sheetView = new SheetView();
sheetView.ShowGridLines = new BooleanValue(false);
sheetViews.Append(sheetView);
ws.Append(sheetViews);
WorkbookStylesPart wbsp = wbp.AddNewPart<WorkbookStylesPart>();
//// add styles to sheet
wbsp.Stylesheet = CreateStylesheet();
wbsp.Stylesheet.Save();
//// add styles to sheet
////wbsp.Stylesheet = GenerateStyleSheet();
//wbsp.Stylesheet.Save();
Columns columns = new Columns();
columns.Append(CreateColumnData(1, 1, 25));
ws.Append(columns);
//// generate rows
SheetData sd = CreateSheetData(products);
ws.Append(sd);
wsp.Worksheet = ws;
wsp.Worksheet.Save();
MERGEiNITIALcELLS(wsp);
wb.Append(fv);
CreateSheet(wbp, wsp, wb);
xl.WorkbookPart.Workbook = wb;
xl.WorkbookPart.Workbook.Save();
xl.Close();
The WorkbookViewId property of the SheetView class is a required attribute/property. Try this:
SheetView sheetView = new SheetView();
sheetView.ShowGridLines = new BooleanValue(false);
sheetView.WorkbookViewId = 0;
sheetViews.Append(sheetView);
ws.Append(sheetViews);
That uses the 1st (default) workbook view. Don't worry, you don't have to explicitly create a WorkbookView child of the BookViews class, which is a child of Workbook. Unless you want to, of course. :)
I tried this way but it was failing but able to identify what is missing. By default when creating a spreadsheet from scratch, there is no default workbook view. So need to create new workbook view.
spreadSheet.WorkbookPart.Workbook = new Workbook(new BookViews(new WorkbookView()));
Then create sheet view.
worksheetPart.Worksheet = new Worksheet(new SheetViews(new SheetView(){WorkbookViewId=0,ShowGridLines=new BooleanValue(false)}), new SheetData());
NOTE: When create columns in the excel workbook, the elements should be created in a sequence. The sequence is
Sheet Views
Sheet View Formatting
Columns
Sheet Data
Enjoy Open XML SDK but Microsoft does not provide very powerfull documentation.

Named Ranges in Excel OpenXML

I am trying to create named ranges in Excel with OpenXML. I am able to add a DefinedName in the DefinedNames collection, but that does not seem to do anything. I noticed a place in the ExtendedFileProperties where the names of ranges are being saved, a structure called "TitlesOfParts". I have tried adding an entry in there but that causes excel to throw an error and the named range is not created. Here is the code I am using:
public void AddNamedRange(string pNamedRangeRef, string pNamedRangeName)
{
DefinedName _definedName = new DefinedName() { Name = pNamedRangeName, Text = pNamedRangeRef };
_workbook.Descendants<DocumentFormat.OpenXml.Spreadsheet.DefinedNames>().First().Append(_definedName);
DocumentFormat.OpenXml.VariantTypes.VTLPSTR _t = new DocumentFormat.OpenXml.VariantTypes.VTLPSTR() { Text = pNamedRangeName };
_spreadsheet.ExtendedFilePropertiesPart.Properties.TitlesOfParts.VTVector.Append(_t);
_spreadsheet.ExtendedFilePropertiesPart.Properties.TitlesOfParts.VTVector.Size++;
}
Using the Open XML SDK 2.0 Productivity Tool for Microsoft Office, to define a global/workbook-wide named range is pretty easy:
DefinedNames definedNamesCol = new DefinedNames(); //Create the collection
DefinedName definedName = new DefinedName()
{ Name = "test", Text="Sheet1!$B$2:$B$4" }; // Create a new range
definedNamesCol.Append(definedName); // Add it to the collection
workbook.Append(definedNamesCol); // Add collection to the workbook
The below code did the trick for me. After this I was able to see the name ranges in excel also.
var wbPart = document.WorkbookPart;
Workbook workbook = wbPart.Workbook;
DefinedName definedName1 = new DefinedName { Name = "ColumnRange",Text = "Sheet1!$A$1:$I$1"};
DefinedName definedName2 = new DefinedName { Name = "RowRange", Text = "Sheet1!$A$1:$A$15"};
if (workbook.DefinedNames == null)
{
DefinedNames definedNames1 = new DefinedNames();
definedNames1.Append(definedName1);
definedNames1.Append(definedName2);
workbook.DefinedNames = definedNames1;
}
'vb.net
Imports DocumentFormat.OpenXml
Imports DocumentFormat.OpenXml.Packaging
Imports DocumentFormat.OpenXml.Spreadsheet
Dim WB As SpreadsheetDocument = SpreadsheetDocument.Create("C:\NewFile.xmlx", SpreadsheetDocumentType.Workbook)
Dim WBP As WorkbookPart = WB.AddWorkbookPart
Dim dn As DefinedName = New DefinedName()
dn.Name = "test"
dn.Text = "XFW_PLP_CalcPlan!A5:$I$1"
Dim dns As DefinedNames = New DefinedNames()
dns.Append(dn)
WBP.Workbook.Append(dns)

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