Efficient ways of working with Excel Documents using .NET Core [closed] - c#

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I need to work programmatically with Excel files (the modern XML-based kinds with the .xlsx extension). The current requirement is to save a particular worksheet within an uploaded Excel document as CSV. This functionality is only (according to the client) a temporary workaround while a forms-based approach to getting the data is developed so there is a reluctance to buy a licence for a commercial Excel library (although I personally haven't ruled this out), so I am currently looking for a .NET native techniques (or a free library) that will allow me to open, navigate and Save As CSV in order to meet the requirement.

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.net core 3.1 sftp upload [closed]

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Is it possible to upload files and folders using SFTP in .net core 3.1 using webclient?
We don’t want to use third party plugins like Renci.Ssh, WinSCP etc.
There is no native support for SFTP or SCP from .net.
Not sure why you are reluctant to using 3rd party libraries. But if its something which cannot be compromised on, you could look at the possibility of launching external programs as sub-processes to perform the necessary activities. However, I believe this is likely to be limited to certain capabilities only.

Is there a .NET text diff library from Microsoft? [closed]

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I would like to use a C# .NET diff/comparison library for text files (C++ to be more precise, but it should not matter).
I have found a lot of libraries in the topic but what I need is a something that is part of the .NET library or it comes from Microsoft. The reason of this restriction is that I do not have to go over our company's long open source tool approval process.
Does C# .NET has such feature?
An example for the usage: I have two slightly different .cpp files. I have to create one .cpp file which will have a #ifdef according to the differences of the two files and we can use one file at two places controlled by a predecessor definition.
There is no such built in functionality in any Microsoft .Net library.

C#: Implementing Licencing in Winforms [closed]

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I recently developed a win form application in C#. Now application is complete and working fine as expected. Now i want to implement licensing feature in it i.e either user buy license key or simply run trial version that expire after some time. Since i have very few time left in Deployment so i prefer some already existing library that did the job for me. More preferable some open source one but paid version also works. In case if there is no such existing solution then please guide me how to implement that.
Take a look at Eziriz's products. I use both of them, one for great obfuscation and the other for licensing. While the obfuscator itself has good support for licensing, IntelliLock is maybe something you'd want to look at for a robust solution.

Compressing an Outlook PST programmatically [closed]

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This Article is the only resource I can find that says the API for compressing a PST file is not exposed. Can anyone verify this or provide information otherwise?
Thanks
My understanding is that the link you posted is correct. There is no API for compacting the PST.
Depending on how many items in the PST you have, one option may be to create a new PST and move the items over, then delete the old PST. Granted, that's not an elegant solution by any means, but it's an option.

Does anyone know of any open source versions of Twitter? [closed]

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I built a GIS application around Twitter and now its getting some interest.
But one of the requirements is that they don't want any outside dependencies.
So I'll need to mimic Twitters functions.
Anyone know of any open source Twitter projects?
Laconica?
http://laconi.ca/trac/
Identica demos it nicely:
http://identi.ca/
Jaiku is a microblogging service very similar to Twitter. Google bought Jaiku a few years ago and made its engine open source. You can find it here:
http://code.google.com/p/jaikuengine/
If you're looking for a .NET alternative. There is Yonkly. Is an open source Twitter clone written using ASP.NET MVC. You can find the source here:
http://www.codeplex.com/yonkly
I have used laconi.ca in the past, it is easy to figure out and highly customizable (for how young it is).

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