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Creating docx OOXML with c#

I was hoping for a good point in the correct direction, as this is something I have never done, and googling is getting me tied in knots.
I want to create a word document (docx) from C# on a ASP.NET MVC application.
Populating a template with something like mail merge would be great.
I have spent day googling this and keep finding archived documentation.
The following examples are from 2012
https://msdn.microsoft.com/en-us/library/office/bb491088.aspx

Because you will generate documents on the server you should avoid Interop for document manipulation. You can use free libraries and SDKs based on OpenXML but this is difficult to learn and error prone.
It probably makes sense to choose one among 3rd party toolkits to get the job done quick and easy. Start by preparing MS Word template documents with placeholders for data. Then you can use c# to load the data for the reports and merge the data with templates to get final documents (docx, pdf, xps or image formats). Here is the code used by one such toolkit needed for merging data from the database with the template to get a pdf document:
IEnumerable<Customer> customers = DataAccess.GetCustomerById(15);
DocumentGenerator dg = new DocumentGenerator(customers);
DocumentGenerationResult result = dg.GenerateDocument("MyTemplate.docx", "MyReport.pdf");
You can also see these examples for more information.

Maybe Templater can be of help..
This is small library you can use to create word document on ASP.NET looking like mail merge...
Try demo http://templater.info/demo

Complex reports from C# programatically into office Word

First of all I want to say hi to the programming community, what I am looking for is a way to generate a report from my Windows Forms Application in word preferably, this report is basically a list of pre-configured days in a tour creation software I am creating.
I have searched everywhere and I cant seem to find information on how to start creating the report, I have all the information saved into a database, I just need to be able to get this information into word and ordered as it should be ordered.
I just want to be pointed in the right direction so I can research on it even further.
The exact thing I want to create is a word file that I wish I could share here so you can actually see what I mean.
Thank you for all your attention and help if possible.

I can point you in the right direction. Word documents are stored in a format called OpenXml which can be created and manipulated without actually using Word directly. That's good because you don't want to deal with code that actually starts an instance of Word and automates it (Interop.) It sort of works but it's not something I recommend dealing with ever.
OpenXml isn't fun either, but it's better. You can create your document "normally" using Word, save it, and then have your application use it as a template, opening a copy, populating some data, and then saving it.
Here's the reference for OpenXml with Word. I'm not saying it's pretty. It's not. The documentation is lacking. This page on adding text isn't linked from the previous page, even though many other topics are.
There are some nuget packages like this one that can help.
I once did a POC that did exactly what you're describing by opening and altering a document used a template using OpenXml. I'll see if I can dig up the code. But this is definitely a good direction to look in if Word is an absolute requirement.
This is a long shot, but can you output in HTML? If you can that's an even easier alternative.
Can you use Excel? That's also OpenXml but there's easier-to-use tools like EPPlus that simplify dealing with it, because it's not just the friendliest thing to work with.

An option that I would suggest is Crystal Reports. You can download the Crystal Reports add-in for Visual Studio for free from here. Crystal Reports is an easy way to perform reporting from various data sources including SQL. There are also a lot of free tutorials online for learning how to use CR. The syntax is a little strange, but it is easy enough to use.
The add-in allows you to create reports for your application and also build applications that can display, print, and export Crystal Reports.
You can export reports to .RTF (Rich Text Format) files. MS Word can open, edit, and convert RTF documents. It does a fairly decent job, but special formatting might take some work. This route is a ton easier than trying to write XML or anything else. I've written several reports designed for export to RTF. My boss runs the report, exports it, then edits it in Word. He loves the reports.
If you are planning on developing a lot of reports, purchasing the full version of Crystal Reports is well worth it. I believe they are on version 2016 currently.

If you do want to deal with automating Word, Microsoft's guide "Automating Applications Using the Office Object Model" Word-specific task content is here: https://msdn.microsoft.com/en-us/library/78whx7s6(v=vs.80).aspx
A larger example: https://support.microsoft.com/en-us/kb/316384
To begin, simply add an assembly reference to your project file for the correct Office Object Library (example: "Microsoft Word ##.0 Object Library"). Note that you must have Office installed to take this approach.
Good luck!

create ppt programmatically using C# [duplicate]

Is there a way to programmatically create PowerPoint presentations? If possible, I'd like to use C# and create PowerPoint 2003 presentations.

Yes, you can.
You will want to look into MSDN which has a pretty good introduction to it.
I might give you a word of warning, Microsoft Office interop is compatible with an API which is now more than 10 years old. Because of this, it is downright nasty to use sometimes. If you have the money to invest in a good book or two, I think it would be money well spent.
Here's a starting point for you. Use the search feature on MSDN MSDN Webpage. It's good for any Microsoft C# .NET style stuff.
Specifically in regards to your question, this link should help: Automate PowerPoint from C#. EDIT LINK NOW DEAD :(. These two links are fairly close to the original KB article:
Automate Powerpoint from C# 1/2
Automate Powerpoint from C# 2/2
Finally, to whoever downvoted this: We were all learning one day, how to do something as a beginner is most definitely programming related, regardless of how new someone might be.

OpenXML looks like the way to go from a web app.
Using the interop libraries is not recommended, as others have stated.

You can also look at Aspose Slides, a component for .NET and Java that makes it easy to generate powerpoint documents.

If you don't really need PowerPoint compatible output, consider using a markup language such as LaTeX with the Beamer package to produce a PDF of the presentation, or use HTML and javascript in a manner similar to Slidy. If you need fancy effects, it might still be easier to use SVG, and you'd have the benefit of getting output that can be reliably viewed with free software.

http://msdn.microsoft.com/hi-in/magazine/cc163471(en-us).aspx
Use this link. Although this is in VB.NET, C# supports the same.

You may also try out SlideMight, a tool for merging hierarchical data with PowerPoint templates.
SlideMight supports:
text substitution in text fields, tables and notes
image substitution, from raw data, files and URLs
images in tables nested
iterations over data to create slides
iterations to populate tables, possibly spanning multiple slides
special formatting for specific cell values
hyperlinks to generated slides
Input data format is at this time just JSON.
There are versions for Windows and Mac OS X.
More information is at http://www.SlideMight.com
Disclaimer:
I am the owner of Delftware Technology, the company that developed SlideMight.
And I am one of the developers.

You can use Essential Presentation product from Syncfusion Software Private Limited. This product can be used to
Create and manipulate PowerPoint presentations
Open, modify, and save existing PowerPoint presentations
Convert PowerPoint presentations to PDF or Image
More information is at https://help.syncfusion.com/file-formats/presentation/overview
Disclaimer:
I work for Syncfusion Software Private Limited

C# - Templated Printing from Object(s)

I'm in need of a solution to print or export (pdf/doc) from C#. I want to be able to design a template with place holders, bind an object (or xml) to this template, and get out a finished document.
I'm not really sure if this is a reporting solution or not.
I also don't want to have to roll my own printing / graphics code -- I'd like all display concerns handled in a template.
I initially think of this as something Crystal Reports can do (although I've never used CR), but I'm not sure if I'm abusing the system here -- I'm not really interested in binding ADO.NET datasets at the moment (screw datasets). Can Crystal deal with binding to objects?
Does SSRS or WPF play in this field too?

A subset of WPF-P is XPS which can be used to present your objects via databinding.
One of the best choices if you are already using WPF.
Google Keywords: XPS, FixedDocument, FlowDocument, WPF Printing

Might read through this thread:
http://groups.google.com/group/nhusers/browse_thread/thread/e2c2b8f834ae7ea8
Seems a lot of people like iTextSharp
http://itextsharp.sourceforge.net/

For Word docs, look into Word's Mail Merge feature and Word automation. I did this recently in a form letter printing project. Basically what I did was create a Word template file (file extension .dot) and in this template file I defined MergeFields in a standard form letter. My application queries a database for the records it needs to print and then for each record it returns it matches fields in the database with these merge fields and sends the result (the merged doc) to the printer.
It's working really well and if I had a link that gave a definitive explanation, I'd provide it (check back here, I'll see if I can't find the most useful ones). Hopefully I've provided enough keywords to let you find your own resources. I can go into more detail if you need.
I've never had to export PDF files but for a project I'm working on now I'll have to. For a free solution my research has lead to iTextSharp (like Will Shaver points out) but I've only done the initial investigations and I have found a few pay solutions I might end up resorting to.

Editing Excel Spreadsheets easily with the SDK

is there anyone who makes use of the Microsoft Open XML SDK 2.0 for editing Excel Spreadsheet, I edited Open XML documents already by only using XML methods, but as there exists the SDK, does someone know if there are really easy methods for some essential functions? For Example the inserting of content in a cell. Also the Open XML Power Tools (published on codeplex) use mostly XML objects I think.
If you have experience, would you give me an example or a hint where I can find useful examples? I already know the site openxmldeveloper.org but also the workshop videos did not help me at all.
thanks
Sebastian

Sebastian, I have not made use of this API yet, but will be using it soon. It appears there are methods for opening docs, updating/inserting into cells. Please check out MSDN. Also, there is an example at: http://msdn.microsoft.com/en-us/library/cc861607(office.14).aspx
Good Luck!