Develop Reference

How to read and import data from Excel to database using EEPLUS

I want to read data from excel using EEPLUS in C#. Who can teach me or share the link to teach it? Thanks for reading!

It is really easy to use, just read through the GetStarted of their GitHub.
Example:
//Open the workbook (or create it if it doesn't exist)
var fi=new FileInfo(#"c:\workbooks\myworkbook.xlsx")
using (var p = new ExcelPackage(fi))
{
//Get the Worksheet created in the previous codesample.
var ws=p.Workbook.Worksheets["MySheet"];
Set the cell value using row and column.
ws.Cells[2, 1].Value = "This is cell A2. It is set to bolds";
//The style object is used to access most cells formatting and styles.
ws.Cells[2, 1].Style.Font.Bold=true;
//Save and close the package.
p.Save();
}

Using C# to programmatically find, and populate bookmarks in a Word 2010 Add-In

I have a Microsoft word 2010 add-in project in visual studio, I just followed the MSDN guide to making a new tab with custom functionality on the ribbon. I've done some googling, but I cant seem to find any examples (or if its even possible) to use the C# to find a bookmark, then use the bookmarks name in an SQL query and populate it. The documents I am working with can have dozens of bookmarks, and there are hundreds of documents. Automating this process is a high priority.

So basically if you want to automate word documents (building word document templates via word bookmarks) Here's how I normally go about doing it.
Copy The Template
Work On The Template
Save In Desired Format
Delete Template Copy
Each of the sections that you are replacing within your word document you have to insert a bookmark for that location (easiest way to input text in an area).
I always create a function to accomplish this, and I end up passing in the path - as well as all of the text to replace my in-document bookmarks. The function call can get long sometimes, but it works for me.
Application app = new Application();
Document doc = app.Documents.Open("sDocumentCopyPath.docx");
if (doc.Bookmarks.Exists("bookmark_1"))
{
object oBookMark = "bookmark_1";
doc.Bookmarks.get_Item(ref oBookMark).Range.Text = My Text To Replace bookmark_1;
}
if (doc.Bookmarks.Exists("bookmark_2"))
{
object oBookMark = "bookmark_2";
doc.Bookmarks.get_Item(ref oBookMark).Range.Text = My Text To Replace bookmark_2;
}
doc.ExportAsFixedFormat("myNewPdf.pdf", WdExportFormat.wdExportFormatPDF);
((_Document)doc).Close();
((_Application)app).Quit();
This code should get you up and running unless you want to pass in all the values into a function.
Sometimes if you have large amounts of fields you can build objects/classes to contain the values.
If you need more examples I'm working on a blog post as well, so I have a lot more detail if this wasn't clear enough for your use case.

You can use Spire.Doc or FreeSpire.Doc library for this purpose. I have a github repo, that I showed an example how to working it.
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System;
using System.Configuration;
using System.Drawing;
using System.IO;
namespace WorkingDocAndPdf
{
class Program
{
static void Main(string[] args)
{
var sourceFilePath = ConfigurationManager.AppSettings["SourceFilePath"];
var saveFilePath = ConfigurationManager.AppSettings["SaveFilePath"];
var document = new Document(sourceFilePath);
var bookmarksNavigator = new BookmarksNavigator(document);
bookmarksNavigator.MoveToBookmark("client_name");
bookmarksNavigator.ReplaceBookmarkContent("Ramil", true);
bookmarksNavigator.MoveToBookmark("client_taxno");
bookmarksNavigator.ReplaceBookmarkContent("VN-12300254178XY6", true);
bookmarksNavigator.MoveToBookmark("amount");
bookmarksNavigator.ReplaceBookmarkContent("871 AZN", true);
bookmarksNavigator.MoveToBookmark("date");
bookmarksNavigator.ReplaceBookmarkContent(DateTime.Now.ToString("dd.MM.yyyy"), true);
//It is for picture
var sealPath = ConfigurationManager.AppSettings["SealPath"];
bookmarksNavigator.MoveToBookmark("seal", true, true);
var section = document.AddSection();
var image = Image.FromFile(sealPath);
var paragraph = section.AddParagraph();
paragraph.AppendPicture(image);
bookmarksNavigator.InsertParagraph(paragraph);
document.Sections.Remove(section);
if (!Directory.Exists(saveFilePath))
Directory.CreateDirectory(saveFilePath);
var saveFileFullPath = $"{saveFilePath}\\{Guid.NewGuid()}.pdf";
//It is for refresh cross reference bookmark, that you can use one bookmark on different location in document. In word shortcut it is `CTRL A + F9`
document.IsUpdateFields = true;
document.SaveToFile(saveFileFullPath, FileFormat.PDF);
}
}
}
For more information, you can visit my github repo: WorkingDocAndPdf_FreeSpireDoc
My article about FreeSpire.Doc (but written in Azerbaijani): C# working Word and PDF files. Print forms

EPPlus with OpenXML and streams

I am trying to automate a Powerpoint presentation. I am using OpenXML to navigate the powerpoint presentation up to the point that I find the Excel linked to a chart. Now I want to use EPPlus to load a datatable into one of the worksheets (because EPPlus has a simple LoadFromDataTable function whereas I think I would have to write lots of code to use OpenXML).
So my problem is this.
I have a PresentationDocument in memory. And I have navigated to the particular chart that I want to manipulate via:
doc.PresentationPart.SlideParts.ElementAt(0).ChartParts.ElementAt(0)
I get the Excel part using:
var stream = chartpart.EmbeddedPackagePart.GetStream()
Then I tried:
using(var pck = new ExcelPackage(stream)) {
`do stuff;
`pck.Save();
}
and then at the end I do a doc.PresentationPart.Presentation.Save but this hasn't changed the Presentation. I can change it using OpenXML instead with:
using (var xl = Spreadsheet.Document.Open(stream, true))
{
`do stuff;
`xl.Close();
}
With everything else the same. So I guess either xl.Close() is doing stuff that pck.Save() isn't or I am using the stream incorrectly - can anyone advise?

Programatically Create Excel Sheets from different templates using a Addin

I am developing an Excel Addin that is able to fetch data from our database.Instead of dumping the data directly , I would like to have the data presented in a nice format. I have got our local VBA expert to develop a templates for the same since there can be multiple sheets all of which can have different formats.
It is while adding the worksheet that I am stuck at.
string TemplateFileLocation = Path.GetFullPath(fileName);
if(File.Exists(fileName))
{
Worksheet newWorkSheet = (WorkSheet)Globals.ThisAddin.Aplication.Worksheets.Add(Missing.Value,Missing.Value,1,TemplateFileLocation);
}
The code crashes while it hits this location.
The Error code returned is : 0x800A03EC
I have verified that the path to the template file is correct.
Each of these templates have only one work sheet.

You can use EPPlus
using System.IO;
using System.Reflection;
using OfficeOpenXml;
//Create a stream of .xlsx file contained within my project using reflection
Stream stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("EPPlusTest.templates.VendorTemplate.xlsx");
//EPPlusTest = Namespace/Project
//templates = folder
//VendorTemplate.xlsx = file
//ExcelPackage has a constructor that only requires a stream.
ExcelPackage pck = new OfficeOpenXml.ExcelPackage(stream);

Open XML SDK page margins

I am trying to set the page margins on an excel spreadsheet that is being generated by open xml sdk. I am not opening an excel document that already exists, it is generated from scratch. I am using the PageMargins class but am not sure how to attach this instance to the worksheet. The SDK productivity tool gives this code:
PageMargins pageMargins1 = worksheet.GetFirstChild<PageMargins>();
pageMargins1.Left = 0.45D;
pageMargins1.Right = 0.45D;
pageMargins1.Top = 0.5D;
pageMargins1.Bottom = 0.5D;
The GetFirstChild() function returns null. I also tried to do
worksheet.Append(pageMargins1);
but no luck.
Also using the code from this example: How change excel 2007 document orientation to landscape by OpenXML sdk
to set the page orientation does not work if creating the document from scratch. How do you add a PageSetup & PageMargin instance to the document?
Any one have knowledge of this SDK and knows how to use the margins or page setup class?

The order that things are appended to the worksheet is important. PageMargins needs to be appended before PageSetup, and they both need to be at the end after the SheetData. Also, all settings need to be set. I used this code:
PageMargins pageMargins1 = new PageMargins();
pageMargins1.Left = 0.45D;
pageMargins1.Right = 0.45D;
pageMargins1.Top = 0.5D;
pageMargins1.Bottom = 0.5D;
pageMargins1.Header = 0.3D;
pageMargins1.Footer = 0.3D;
worksheetPart.Worksheet.AppendChild(pageMargins1);
PageSetup pageSetup = new PageSetup();
pageSetup.Orientation = OrientationValues.Landscape;
pageSetup.FitToHeight = 2;
pageSetup.HorizontalDpi = 200;
pageSetup.VerticalDpi = 200;
worksheetPart.Worksheet.AppendChild(pageSetup);
A neat trick to be used along with the sdk productivity tool is to rename the .xlsx file to .zip, then extract the contents. Then open /xl/worksheets/sheet.xml and compare the markup to the markup of an excel file created by excel.