I want read all data from file with the same formatting as showing when I open excel file. I mean the same indent, which is set in "Format cell". All methods I tried works fine but remove indentation (formatting).
Checked already ExcelDataReader, Oledb, Interop.
You can use EasyXLS Excel Reader. You can read both xls or xlsx files.
This code sample reads the value and the indent from A1 cell:
ExcelDocument workbook = new ExcelDocument();
// Read XLSX file
workbook.easy_LoadXLSXFile("file.xlsx");
// Get the table of the first worksheet
ExcelTable table = ((ExcelWorksheet)workbook.easy_getSheetAt(0)).easy_getExcelTable();
//Get the value from A1 cell
String value = table.easy_getCell(0, 0).getValue();
//Get the indent from A1 cell
int indent = table .easy_getCell(0, 0).getStyle().getIndent();
You can also read other formatting settings. In a similar way you can read xls files also.
Related
I am using EPPLUS to create a csv file. When I create an Excel file, I can format the date thus:
ws.Cells["A:A"].Style.Numberformat.Format = "yyyy-MMM-dd";
Which is what I need in my csv. However, if I try to save the worksheet as a csv, any dates end up as numbers.
***EDIT - I appreciate Excel stores the date as a serial number, I was just wondering if EPPLUS had a feature I can't locate to help me out.
Assuming you are setting the value to a proper DateTime value in code, you should be able to use the Text property of the cell like this:
var ws = package.Workbook.Worksheets.Add("Test");
ws.Cells["A:A"].Style.Numberformat.Format = "yyyy-MMM-dd";
ws.Cells["A1"].Value = DateTime.Now;
Console.WriteLine(ws.Cells["A1"].Text); // "2022-May-26"
I would like to see your help on how to parse an excel file in mvc c# but, accessing its cell address like:
var a = Excel_cell{A1:B1}
model.a = a
I've looked to various plugin like excelfilereader, epplus and also javascript libraries like sheetjs and alike but, they do the same where they parse the whole file with the layout of a table...
My excel file is quite complicated because it has no headers and its data is on the right side.
EG:
I apologize if I put an image here...
My requirement is read an excel template, and save its data to the database.. I dont need to send the file to server because it will not be beneficial in the long run
Im hoping you could help me... An idea how to accomplish this would be really help.
You can try by using Spire.XLS, It's a good library that helps you read and write (this one only with a license) excel files and some other formats, it's easy to use and intuitive, for example this would be the code to get an excel file and read some cells:
//Create a variable to access the excel file
Workbook yourFile = new Workbook();
Stream stream = new MemoryStream(FilePath);
//Load the excel file into the variable
workbook.LoadFromStream(stream);
//Select the worksheet you want to take values from
var firstSheet = workbook.Worksheets.Where(x => x.Name == "Name of the sheet").First() as Worksheet;
string value = firstsheet.Range[A1].Text;
So with this code you have populated a variable with the excel file, a variable with a specific sheet (for example the first one), and then you save the text value of a specific cell of your choice in another variable, let me know if I got it right
EDIT: This is their site and this is the nuget gallery
I am trying to build simple program that does my weekly job.
Everytime I receive csv file, I maintain excel file.
My csv is like below:
key_code,eng_name,...so on
000001,some name,...so on
My excel is like below:
Some text are written on A1-G4
No column hearders written
Data is from 5th row
Each row has data from B-G(1st row B5-G5, 2nd row B6-G6)
If key_code in csv does not exist in excel, I add.
If key_code in csv does exist in excel, I update the rest columns.
If key_code in excel does not exist in csv, I delete the row.
Can anyone tell me any easy way or steps to get this done?
I am very confusing about what to use to update excel file among OleDb, Interop.Excel, epplus, spire.xls, etc.
And in which class do I have to store csv data and excel data to compare.
For reading CSV you can use ChoETL reader, this is one of the best CSV readers I have ever used.
The tricky part is to how to write Excel file and choosing the right tool, amongst the tools you have mentioned EPPlus is best because
Excel.Interop needs Excel(MS Office) to be installed on production machine which can create licencing issues
To use OleDB you need some nitty gritty to use it a better way
EPPlus provides some abstraction which makes it easy to manipulate the excel files
using (var p = new ExcelPackage())
{
//A workbook must have at least on cell, so lets add one...
var ws=p.Workbook.Worksheets.Add("MySheet");
//To set values in the spreadsheet use the Cells indexer.
ws.Cells["A1"].Value = "This is cell A1";
//Save the new workbook. We haven't specified the filename so use the Save as method.
p.SaveAs(new FileInfo(#"c:\workbooks\myworkbook.xlsx"));
}
This is very simple example given on the github page to write, please use it and post any specific issues
If key_code in csv does not exist in excel, I add.
If key_code in csv does exist in excel, I update the rest columns.
If key_code in excel does not exist in csv, I delete the row.
As my understanding of the rules above, you simply delete the old excel file and create a new file from the data in the CSV file.
You can use R to do this very easily:
#Install package 'writexl' if you didn't, by install.packages("writexl")
library(writexl)
#File excel
fn <- "file.xlsx"
#Check its existence
if (file.exists(fn))
#Delete file if it exists
file.remove(fn)
#Read the csv file to a data frame
df <- read.csv("C:/newfile.csv")
#Write the data frame to excel file. Change col_names = TRUE if you want the headers.
write_xlsx(
df,
path = "file.xlsx",
col_names = FALSE
)
I have an Excel file of 20 columns and there are about 150 records. I need to search for a particular string in a particular column with header "DESCRIPTION"(usually column b). The search string and column header values come from an INI File. After the search is found, I need to copy the value in column J (again from INI file) to the output file.
I am new to C#. Can somebody help me here. I tried Range.Find but I got confused.
Usually OLEDB with SQL like statements can be used to retrieve specific column or row data. Please go throgh following solutions:
http://www.c-sharpcorner.com/UploadFile/6b8651/read-excel-file-in-windows-application-using-C-Sharp/
https://www.codeproject.com/articles/1088970/read-write-excel-file-with-oledb-in-csharp-without
Hope this will give you some idea. But try to show some of your code so that members can have the better understanding of your approach. Thanks
Apart from Oledb connection you can also use ClosedXML. ClosedXML is a wrapper around OpenXML that allows you to easily work with .XLSX files.
https://github.com/ClosedXML/ClosedXML.
You can look at the documentation that'll help you understand how to search for text.
If you want to search .XLS files, then you can use the Microsoft Excel Interoperability libraries. These libraries cannot be used in a web app, are slower than ClosedXML but they support all kinds of Excel files.
You can use free version of GemBox.Spreadsheet to search for a text in both XLS and XLSX file formats. Also regarding the INI file, you can use MadMilkman.Ini.
Here is an example that you could try:
// Load INI file.
IniFile ini = new IniFile();
ini.Load("Sample.ini");
// Get INI values.
string header = ini.Sections["SampleSection"].Keys["ColumnHeaderValue"].Value;
string search = ini.Sections["SampleSection"].Keys["SearchTextValue"].Value;
string j = ini.Sections["SampleSection"].Keys["JColumnValue"].Value;
// Load XLSX file.
ExcelFile excel = ExcelFile.Load("Sample.xlsx");
ExcelWorksheet sheet = excel.Worksheets[0];
// Find column header value in first row.
ExcelColumn searchColumn = sheet.Rows[0].Cells
.First(cell => cell.ValueType == CellValueType.String && cell.StringValue == header)
.Column;
// Find search value in column.
int r, c;
searchColumn.Cells.FindText(search, false, false, out r, out c);
ExcelCell searchCell = sheet.Cells[r, c];
// Get cell from column "J" that is in the same row as cell that has search text.
ExcelCell jCell = sheet.Cells[r, ExcelColumnCollection.ColumnNameToIndex("J")];
// Set cell value.
jCell.Value = j;
// Save XLSX file.
excel.Save("Sample.xlsx");
In my C# application, I am using ClosedXml .Excel for working with excel files.
I have an excel template, where I add the template into application and add data to the excel sheet and save the excel as below,
wb = new XLWorkbook(exportOption.FileName);
---
if (wb.Worksheets.Count > 0)
{
for (int i = 0; i < wb.Worksheets.Count; i++)
{
using (var ws = wb.Worksheet(i + 1))
{
if (ws.Visibility == XLWorksheetVisibility.Visible)
{
ws.SetTabActive();
break;
}
}
}
}
try
{
wb.CalculateMode = XLCalculateMode.Auto;
wb.SaveAs(exportOption.FileName);
}
After saving the changes my excel format completely changes with other sheets as well.
For example, In one sheet i have percentage format which changes to Date format.
How can i keep the format of excel same and just insert data to other sheets.
Its common for Excel to be tricked into treating numbers as dates (as under the hood Excel stores dates as numbers). To force the cell to be a number not date try:
ws.Cell(row,col).SetValue<double>(Convert.ToDouble(val));
Here is the official documentation on ClosedXML Cell Formatting.
If you need preserve the format as percentage, eg as "#.##%" simply set the cell format:
ws.Cell(row, col).Style.NumberFormat.NumberFormatId = 10;
or untested
ws.Cell(row, col).Style.NumberFormat.Format = "0.0%";
You must select the cell Number Format from your app before saving it.
CLosedXml is a library based on OPENXML library so you must apply an OpenXml excel style Sheet to change Cells Number Format.
This is an Article that may help you