I am writing an application in which I need to store data cell values into excel sheet. Everything is working fine but the problem is everytime I run the application, it overwrites the existing data.
So far the code I have taken from Github:
var workbook = new XLWorkbook();
var worksheet = workbook.Worksheets.Add("Sample Sheet");
worksheet.Cell("A1").Value = this.textBox1.Text;
worksheet.Cell("B1").Value = this.textBox2.Text;
worksheet.Cell("C1").Value = this.textBox3.Text;
worksheet.Cell("D1").Value = col1;
worksheet.Cell("E1").Value = col2;
worksheet.Cell("F1").Value = this.textBox6.Text;
workbook.SaveAs("HelloWorld.xlsx");
Note: I don't want to save data using datatable or anything. I just want to get values from textboxes and append them to the existing sheet. I have visited many stackoverflow post but they doesn't helped me much.
Thanks in advance!
Hope this helps:
var wb = new XLWorkbook("Path to file");
IXLWorksheet Worksheet = wb.Worksheet("Tab name");
int NumberOfLastRow = Worksheet.LastRowUsed().RowNumber();
IXLCell CellForNewData = Worksheet.Cell(NumberOfLastRow + 1, 1);
CellForNewData.InsertData(your_data);
You are explicitly storing the values in row 1 of the spreadsheet. If you want to append the values, you'll have to increment the row number and store the values in the appropriate cells.
Related
In C# I have populated an excel file with data. Now I would like to create a table starting at cell A2.
I am using the code below to create the table but instead of creating the table starting at Cell A2, the table is being created starting at cell A3
using var package = new ExcelPackage(file);
var ws = package.Workbook.Worksheets.Add(Name: "MainReport");
var range = ws.Cells[Address: "A2"].LoadFromCollection(people, PrintHeaders: true);
range.AutoFitColumns();
//Formats Header row
ws.Cells[Address: "A1"].Value = "My Data!";
ws.Cells[Address: "A1:C1"].Merge = true;
ws.Column(col: 1).Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
ws.Row(row: 1).Style.Font.Size = 24;
ws.Row(row: 1).Style.Font.Color.SetColor(Color.Pink);
ws.Row(row: 2).Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
ws.Row(row: 2).Style.Font.Bold = true;
ws.Column(col: 3).Width = 20;
//create a range for the table
ExcelRange range_table = ws.Cells[2, 1, ws.Dimension.End.Row, ws.Dimension.End.Column];
//add a table to the range
ExcelTable tab = ws.Tables.Add(range_table, "Table1");
//format the table
tab.TableStyle = TableStyles.Medium2;
Excel itself works so that if you select A2:C4 and create a table and you say "has no Headers" it will put some generic headers in A2:C2 and shift the data area (and the data if there is any) to A2:C5.
If you say "has Headers" the headers will be defined in A2:C2, too, but the data only is in A3:C4.
The real Excel obviously does some guessing whether headers are present or not and pre-ticks the box for you.
As stated here in the API Documentation, there is no flag to define if headers are present in the range so there might be no guessing and it might be assumed it is "no" and the shifting as explained on top takes place.
If you take that into consideration you should be able to work it out.
I will be using EPPlus.Core to generate excel reports in my .Net Core project. So after digging Google to find some sample code snippets I found the following blog:
Create Excel Files in C#
I can create an excel file with a single header with the following code:
using (ExcelPackage excel = new ExcelPackage())
{
excel.Workbook.Worksheets.Add("Worksheet1");
excel.Workbook.Worksheets.Add("Worksheet2");
excel.Workbook.Worksheets.Add("Worksheet3");
var headerRow = new List<string[]>()
{
new string[] { "ID", "First Name", "Last Name", "DOB" }
};
// Determine the header range (e.g. A1:D1)
string headerRange = "A1:" + Char.ConvertFromUtf32(headerRow[0].Length + 64) + "1";
// Target a worksheet
var worksheet = excel.Workbook.Worksheets["Worksheet1"];
// Popular header row data
worksheet.Cells[headerRange].LoadFromArrays(headerRow);
FileInfo excelFile = new FileInfo(#"C:\Users\amir\Desktop\test.xlsx");
excel.SaveAs(excelFile);
}
But I couldn't find out how to add multiple header rows on a single worksheet. For instance, the first table has ID, Name, Price headers and the second table has Notes and Price headers. Is it possible to add multiple tables into a worksheet with EPPlus.Core? The code snippet above adds only a single header row from A1 to D1. Let's say I wanna add another header row from A4 to J4. Any suggestions?
And yet I found the answer. Hope this will help others to save their time. It is not the best of best approach but this is what I need. I defined the coordinates on the Cells array by adding "A1:J1" and "A3:E3".
var worksheet = excel.Workbook.Worksheets["Worksheet1"];
worksheet.Cells["A1:J1"].LoadFromArrays(header1Data);
worksheet.Cells["A1:J1"].Style.Font.Bold = true;
worksheet.Cells[2, 1].LoadFromArrays(array1Data);
worksheet.Cells["A3:E3"].LoadFromArrays(header2Data);
worksheet.Cells["A3:E3"].Style.Font.Bold = true;
worksheet.Cells[4, 1].LoadFromArrays(array2Data);
I have a vsto application that populates an Excel sheet.
First I populate the datatable. The next function is to create a vsto listobject:
// Populate the sheet
XlsInterop.Excel.Worksheet worksheet = (XlsInterop.Excel.Worksheet)Globals.ThisAddIn.Application.ActiveWorkbook.Worksheets.Add();
extendedWorksheet = Globals.Factory.GetVstoObject(worksheet);
XlsInterop.Excel.Range cell = extendedWorksheet.Range["A1"];
excelItemsList = extendedWorksheet.Controls.AddListObject(cell, sheetName);
excelItemsList.AutoSetDataBoundColumnHeaders = true;
excelItemsList.DataSource = dt;
excelItemsList.ListColumns[5].Range.NumberFormat = "#";
Now the problem is that in column "5" I have values like 005, 004. In Excel, the values display as 5 and 4. How can I make sure that the values in Excel show the same values as in my database?
If I change my code like:
excelItemsList.SetDataBinding(dt);
excelItemsList.ListColumns[5].Range.NumberFormat = "#";
excelItemsList.SetDataBinding(dt);
It is doing what I want, but I don't think that this is the way to go.
If you know how many leading zeros you need, you can then format the column with that.
.NumberFormat = "000";
The column would then still be evaluated as a number.
I have the following error...
System.Data.DuplicateNameException: 'A column named 'samplex' already
belongs to this DataTable.'
I have large multiple excel files that need merging into one. But all the column names are the same. So I think that is why I am getting this error.
All the data is in sheet1 one from each excel files. Searching on the net the best one I found was using Spire.Xls, sample taken from here
My code sample, using console...
using Spire.Xls;
::
::
Workbook workbook = new Workbook();
workbook.LoadFromFile(#"filea.xlsx");
Workbook workbook2 = new Workbook();
workbook2.LoadFromFile(#"fileb.xlsx");
Workbook workbook3 = new Workbook();
workbook3.LoadFromFile(#"filec.xlsx");
Worksheet sheet2 = workbook3.Worksheets[0];
DataTable dataTable = sheet2.ExportDataTable();
Worksheet sheet1 = workbook.Worksheets[0];
sheet1.InsertDataTable(dataTable, false, sheet1.LastRow + 1, 1);
//save the workbook
workbook.SaveToFile("result.xlsx");
Appreciate if anyone can help me on this?
Since you're able to get DataTable objects and all the column names are the same, I'd bet you could use DataTable.Merge() -
Workbook workbook1 = ...;
Workbook workbook2 = ...;
DataTable bookTable1 = workbook1.ExportDataTable();
DataTable booktable2 = workbook2.ExportDataTable();
bookTable1.Merge(bookTable2);
// Spire specific API calls to save bookTable1 to Excel file
The only requirement for your data is that you have a key column. To configure the DataTable with a key -
bookTable1.PrimaryKey = bookTable1.Columns("DataID" /* your key column name here */);
When I used Microsoft.Office.Interop.Excel, sample taken from here, it solve the problem regarding columns with same name. The code is long and complicated but it works but you will need Microsoft Office on the machine. Only a slight problem is that the results shows in new sheet, it doesn't go directly into sheet1. If anyone can advise me on this, it will be ideal.
I am using Visual Studio 2017.
You can use CellRange.Copy(CellRange destRange) method in Spire.XLS to merge worksheets from different workbooks into one, it won't throw the DuplicateNameException.
Refer to the following code:
//Load the first workbook
Workbook workbook1 = new Workbook();
workbook1.LoadFromFile("Sample.xlsx");
Worksheet sheet1 = workbook1.Worksheets[0];
//Load the second workbook
Workbook workbook2 = new Workbook();
workbook2.LoadFromFile("sample2.xlsx");
Worksheet sheet2 = workbook2.Worksheets[0];
int a = sheet2.LastRow;
int b = sheet2.LastColumn;
//Copy data from the 2nd row in sheet2 into sheet1
sheet2.Range[2, 1, a, b].Copy(sheet1.Range[sheet1.LastRow + 1, 1, a + sheet1.LastRow, b]);
workbook1.SaveToFile("reslut.xlsx", ExcelVersion.Version2013);
I have already tried the code and it works well on my side.
I have excel template with empty one-column table. I need to populate it with some string values (this is needed for setting lookups using data validation, but I guess it doesn't really matter)
I came up to getting Table object and I assume I should use Append method
var workBookPart = doc.WorkbookPart;
var lookupsSheet = (Sheet)workBookPart.Workbook.Sheets.FirstOrDefault(x => (x is Sheet && ((Sheet)x).Name == "Lookups"));
var worksheetPart = (WorksheetPart)workBookPart.GetPartById(lookupsSheet.Id);
var table = worksheetPart.TableDefinitionParts.FirstOrDefault(x => x.Table.DisplayName == "ValuesTable")?.Table;
Can someone enlighten about the correct way of adding rows to such table. Thanks!
I would suggest you use the ClosedXML library to set the values of cells in your worksheet. By using ClosedXML, you will be able to populate the cells you want in the following fashion:
var workbook = new XLWorkbook();
var ws = workbook.Worksheets.Add("Demo");
// Set the values for the cells
ws.Cell(1, 1).Value = "Value";
ws.Cell(2, 1).Value = 1;
ws.Cell(3, 1).Value = 2;
ws.Cell(4, 1).Value = 3;
ws.Cell(5, 1).Value = true;
Note that you can set the value of a cell to a string, an integer, and a boolean without doing any explicit casting. You can set the value of a cell without doing any explicit casting to other types as well, as it is explained in the following link: Cell Values.
For more information regarding the ClosedXML library please refer to the documentation.
As a side note, I was really eager to use Open XML to manipulate Excel spreadsheets but I found ClosedXML way easier to use.