Please refer link for the code i am using to generate excel file from data table. I am able to generate excel file successfully.
But the problem/Challenge/Question is as follows.
I Want to generate column as per the datatype so if Column value contains date the it cell format should be date(dd/mm/yyy) if number then numeric. ans so on...
I have tried to generate excel file as per data format you can see specific methods to generate cell value. But the problem is when user download the file it will gives the warning message that "Excel found unreadable content 'filename'. Do you want to recover the content of this workbook?". I don,t want that warning message should come.
If I am writing everything as text without format then file will open without any warning message and after downloading file, if user tries to format respective column in date or number format then also it will not allow user to format/slice & dice data in excel file.
Reference :- http://www.codeproject.com/Articles/263106/Export-Tabular-Data-in-CSV-and-Excel-Formats-Throu
Please let me know the solution if anybody has.
I am using DocumentFormat.OpenXml.dll
private Cell CreateTextCell(string header, UInt32 index, string text)
{
var cell = new Cell {DataType = CellValues.InlineString, CellReference = header + index};
var istring = new InlineString();
var t = new Text {Text = text};
istring.Append(t);
cell.Append(istring);
return cell;
}
private Cell CreateDateCell(string header, UInt32 index, DateTime sDate)
{
Cell cell = new Cell();
cell.DataType = CellValues.Date;
cell.CellReference = header + index;
cell.StyleIndex = UInt32Value.FromUInt32(14);
cell.CellValue = new CellValue { Text = sDate.ToOADate().ToString() };
return cell;
}
private Cell CreateNumberCell(string header, UInt32 index, string text)
{
Cell cell = new Cell();
cell.DataType = CellValues.Number;
cell.CellReference = header + index;
cell.CellValue = new CellValue(text);
return cell;
}
I have moved to EPPlus .net library to generate excel file and it is very easy to use.
Thanks.
I may not have the complete solution but you can try the below steps to find the root cause:
One of the reasons for unreadable content error (There are many reasons for this but considering that you are just writing from the datatable only).is if there is a mismatch between the StyleIndex/Datatype/Cellvalue format
To identify the root cause you can try:
Create a sample excel and directly write a cell (only a cell) with number, it that goes on fine, try the next datatype one by one.
Next try to write them one after the other.
Do this and sort down the types which are causing problems.
Next try to vary the StyleIndex/cellFormat with that type (you can check for examples online) till the format is fine without error. Once you are good with all types, you can try writing to the entire excel.
You can also use this method if you want to try something new using OpenXML (since you do not have well documented examples for everything Online)
Another way to identify issues is to use Openxml productivity tool and do a validation of the file.
Related
I am running a Postman test suite and the results of the tests are exported into a json file. I have successfully been able to convert the results into a excel file. However, is there a way for me to delete records that do not begin with a particular string? Below is an example of what I am seeing in the output file of three columns (I clearly changed this data for security reasons). I am only wanting to see rows that start with TC:
Get Token test.com(12345) 1
Submit SR test.com(12345) 1
TC - Testing test.com(12345) 1
Also if anyone knows how to change the third column to a string on each row, I will gladly take that knowledge sharing but the other piece is what I am trying to do right now. Not a high critical problem because I can easily just go into the excel file and sort out the rows but just seeing if there is an easier way to do it. Here is the code that I have so you can see I was able to get a file created...
using Aspose.Cells;
using Aspose.Cells.Utility;
using DocumentFormat.OpenXml.Spreadsheet;
using Microsoft.AspNet.SignalR.Json;
using Newtonsoft.Json;
// create a blank Workbook object
var workbook = new Aspose.Cells.Workbook();
var worksheet = workbook.Worksheets[0];
//Read json file
string jsonInput = File.ReadAllText(#"C:\Users\kruepb\Desktop\QA TEST RUN");
//set JsonLayoutOptions for formatting
JsonLayoutOptions options = new JsonLayoutOptions();
options.ArrayAsTable = true;
//Import JSON Data
Aspose.Cells.Utility.JsonUtility.ImportData(jsonInput, worksheet.Cells, 1, 0, options);
//Format sheet
worksheet.Cells.DeleteRows(0, 3);
worksheet.Cells.DeleteColumns(0, 9, false);
worksheet.Cells.DeleteColumn(2);
worksheet.Cells.DeleteColumns(3, 125, false);
//Add headers
worksheet.Cells["A1"].PutValue("Name");
worksheet.Cells["B1"].PutValue("URL");
worksheet.Cells["C1"].PutValue("Passed?");
worksheet.Cells["D1"].PutValue("Output");
// save CSV file
workbook.Save(#"C:\Users\kruepb\Desktop\TESTRUN.csv");
I am currently comparing different files with each other and put the output in an Excel Workbook with multiple worksheets (one per file comparison) using EPPlus 4.5.3.3.
The worksheets are simple ranges - no tables.
Sometimes it is required to move the content of one Excel Sheet to a certain row in another Excel Sheet.
For this I am using the InsertRow function of EPPlus. The function itself does the trick and inserts the content at the desired row.
However, when opening the Workbook I receive these errors:
The content of that XML file is the following:
<?xml version="1.0" encoding="UTF-8" standalone="true"?>
-<recoveryLog xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<logFileName>error044200_02.xml</logFileName>
<summary>Errors were detected in file 'C:\Users\...\test.xlsx'</summary>
-<repairedParts>
<repairedPart>Repaired Part: /xl/worksheets/sheet5.xml part with XML error. Load error. Line 1, column 0.</repairedPart>
</repairedParts>
When I am adding the content at the last row without using InsertRow everything is working fine.
Also, if I save the ExcelPackage immediately after using InsertRow the error is also present, so it definitely has something to do with this function (also if I am only using one Worksheet). After using InsertRow it seems like the whole formatting of the respective Excel Sheet is screwed up. The inserted content appears to be right though.
The excel is initially created from an empty template excel that contains nothing but the header names (also had the same issue with a template without anything inside):
The following code can be used to reproduce (this is just an example - in my case every sheet has more than 50 rows):
FileInfo filePath= new FileInfo(fileName);
excel = new ExcelPackage(filePath);
ExcelWorkbook wb = excel.Workbook;
foreach (ExcelWorksheet ws in wb.Worksheets)
{
int i = 5;
ws.InsertRow(i, 1);
//same effect with ws.InsertRows(i, 1, i-1)
ws.Cells[i, 1].Value = "test";
ws.Cells[i, 2].Value = "test";
//excel.Save();
}
excel.Save();
Although my answer is not based on EPPlus, have you looked at this post ?
Inserting new rows and moving exsisting ones with OpenXML SDK 2.0
I am guessing that you are getting errors because the newly added rows from the ws.InsertRow function are not updating the required row indexes. This is mentioned in the post.
Also there is a recommendation in the comments "To anyone who is getting an error when opening the file try this line before you save your document'... xlsFile.WorkbookPart.DeletePart(xlsFile.WorkbookPart.CalculationChainPart);
As part of the project, I need to save some range of Excel cells as a PDF file, still making everything fit in one page. If there are more data than fit to one page, it needs to be nicely trimmed and go to the 2nd page.
My code saves an Excel file as PDF, but there are 8 pages now, and the data are displayed big and there is a lot of blank spaces around each edge of the page.
Also, not all columns are fit in one page. It is like the first page has column A through column G, and later in other pages, I see column H through column M, but this is not what I want.
var excelPath = "My Excel file path.xlsx"; //Excel file path
var pdfPath = "My PDf file path.pdf"; //Pdf file path
var sheetName = "25. Data"; //Excel sheet name to get data from
var printRange = "A1:M70"; //Area that needs to be included in PDF
Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
var wb = app.Workbooks.Open(excelPath);
Microsoft.Office.Interop.Excel.Worksheet ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets[sheetName];
ws.PageSetup.Orientation = xlPageOrientation.xlLandscape;
ws.PageSetup.PrintArea = printRange;
ws.PageSetup.FitToPagesWide = 1;
ws.PageSetup.FitToPagesTall = false;
wb.ExportAsFixedFormat(XlFixedFormatType.xlTypePDF, pdfPath);
Can someone tell me what is wrong with this code??
Figured it out. I didn't know why but PageSetup.Zoom was set to 100 by default. Adding
ws.PageSetup.Zoom = false;
fixed the issue. Microsoft page says if this value is set to true, FitToPagesTall and FitToPagesWide will be ignored.
I'm just starting to code so all help is appreciated I have searched everywhere and couldn't find a way to do this, I need to update a specific cell in an CSV file using a button (for the update) and a combobox (that has the value in this case some names) thanks in advance :)
No need for interops, or other s$!^&... It's .csv, which is essentially text file where data is separated by semicolons and new lines (if not specially formatted)...
First, as #WynDiesel said, try to change data in .csv to some hard-coded value. Let's say you need to change data in cell [X, Y] (X-th column, Y-th row). The easiest (though not most efficient way) of doing this would be reading all lines of the .csv file with StreamReader or using other method and saving those lines to, let's say, string array which we will call rowsArray. Then access Y-th row, split it using semicolon delimiter and save the result to other string array (let's call this one dataArray).
string[] dataArray = string.Split(';', rowsArray[Y]);
Then change X-th value of that dataArray.
dataArray[X] = myNewValue;
After this, do
rowsArray[Y] = string.Join(";", dataArray)`.
Now you only need to write all the data back to the original file.
As for UI thing, just use OnClick event for the button, get the value of ComboBox and use the function we earlier created for writing that value to the .csv file.
Forget about the combobox/UI first.
You'll need to write a piece of code that can take a filename, read all the lines from that file, and then for a certain line in that file, break it down into fields (by a delimeter), then rebuild that line up with the new value you want in, build the file up again, and write it again. Once you have done this, you start building your UI around this.
Start breaking your problem down into smaller problems, and solve the smallest problem first.
You only need Micorosft.Office.Interop.Excel.dll
private void button_Click(object sender, EventArgs e)
{
var fileName = #"myexcel.xlsx";
if (File.Exists(fileName))
{
try
{
var excelApp = new Excel.Application();
var xlWorkBook = excelApp.Workbooks.Open(fileName);
var xlWorkSheet = (Excel.Worksheet)excelApp.ActiveSheet;
xlWorkSheet.Cells[1, "A"] = "Some thing";
xlWorkSheet.Cells[1, "B"] = "Other thing";
xlWorkSheet.SaveAs(fileName);
}
catch (Exception ex)
{
//some error handling;
}
}
}
You can read more about opening/writing/reading excel files here:
https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/interop/how-to-access-office-onterop-objects
How to create and download excel document using asp.net ?
The purpose is to use xml, linq or whatever to send an excel document to a customer via a browser.
Edit : Use case
The customer load a gridview ( made with ajax framework ) in a browser, the gridview is directly linked to an sql database.
I put a button 'export to excel' to let customer save this gridview data on his computer ansd i would like to launch a clean download of an excel.
The solutions proposed here are not clean, like send an html document and change the header to excel document etc, i'm searching a simple solution on codeplex right now, i will let you know.
Starter kit
First i have downloaded the Open XML Format SDK 2.0.
It comes with 3 useful tools in :
C:\Program Files\Open XML Format SDK\V2.0\tools
DocumentReflector.exe wich auto
generate the c# to build a
spreadsheet from the code.
OpenXmlClassesExplorer.exe display
Ecma specification and the class
documentation (using an MSDN style
format).
OpenXmlDiff.exe graphically compare
two Open XML files and search for
errors.
I suggest anyone who begin to rename .xlsx to .zip, so you can see the XML files who drive our spreadsheet ( for the example our sheets are in "xl\worksheets" ).
The code
Disclaimer : I have stolen all the code from an MSDN technical article ;D
The following code use an *.xlsx template i made manually to be able to modify it.
Namespaces references
using System.IO;
using System.Xml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;
using DocumentFormat.OpenXml;
// Database object
DataClassesDataContext db = new DataClassesDataContext();
// Make a copy of the template file.
File.Copy(#"C:\inetpub\wwwroot\project.Web\Clients\Handlers\oxml-tpl\livreurs.xlsx", #"C:\inetpub\wwwroot\project.Web\Clients\Handlers\oxml-tpl\generated.xlsx", true);
// Open the copied template workbook.
using (SpreadsheetDocument myWorkbook = SpreadsheetDocument.Open(#"C:\inetpub\wwwroot\project.Web\Clients\Handlers\oxml-tpl\generated.xlsx", true))
{
// Access the main Workbook part, which contains all references.
WorkbookPart workbookPart = myWorkbook.WorkbookPart;
// Get the first worksheet.
WorksheetPart worksheetPart = workbookPart.WorksheetParts.ElementAt(2);
// The SheetData object will contain all the data.
SheetData sheetData = worksheetPart.Worksheet.GetFirstChild<SheetData>();
// Begining Row pointer
int index = 2;
// Database results
var query = from t in db.Clients select t;
// For each item in the database, add a Row to SheetData.
foreach (var item in query)
{
// Cell related variable
string Nom = item.Nom;
// New Row
Row row = new Row();
row.RowIndex = (UInt32)index;
// New Cell
Cell cell = new Cell();
cell.DataType = CellValues.InlineString;
// Column A1, 2, 3 ... and so on
cell.CellReference = "A"+index;
// Create Text object
Text t = new Text();
t.Text = Nom;
// Append Text to InlineString object
InlineString inlineString = new InlineString();
inlineString.AppendChild(t);
// Append InlineString to Cell
cell.AppendChild(inlineString);
// Append Cell to Row
row.AppendChild(cell);
// Append Row to SheetData
sheetData.AppendChild(row);
// increase row pointer
index++;
}
// save
worksheetPart.Worksheet.Save();
}
I havent finished yet, my second job is to auto download the spreadsheet after modification.
Finally, i redirect the user to my generated spredsheet (from my aspx)
context.Response.Redirect("Oxml-tpl/generated.xlsx");
just set Response.ContentType = "application/vnd.ms-excel" and your page will rendered as an excel sheet on the clients browser
Sample code here
There are quite a few ways of handling this, depending on how extensive the Excel functionality is. Binoj's answer works if the Excel is just a spreadsheet and has no direct Excel functionality built in. The client can add functionality, concats, etc. These are "dumb" excel docs until the client does soemthing.
To create a more full featured Excel doc, you havve two basic choices that I can think of offhand.
Use either the office components (re: bad) to create an excel document, or a third party component, like SoftArtisan's ExcelWriter. Great component, but there is a cost.
Use a control on the page that allows export to Excel. Most vendors of ASSP.NET controls have this functionality on their grids.
Option #1 allows you pretty much all functionality of Excel. Option #2 is a bit more limited, at least in the controls I have tried.
Good article on how top export to excel from Erika Ehrli
http://blogs.msdn.com/erikaehrli/archive/2009/01/30/how-to-export-data-to-excel-from-an-asp-net-application-avoid-the-file-format-differ-prompt.aspx