Comments for C# Hacker - The Rambling Coder

Comment on 2010 – 2012 Technology Predictions by Gareth

Gareth — Mon, 25 Jan 2010 18:02:17 +0000

I forgot to add SSD’s will become the standard for netbooks and notebooks.

Comment on SQLite for C# – Part 8 – Loading CSV/Pipe into SQLite via command line by Sean

Sean — Sat, 23 Jan 2010 20:39:03 +0000

A minor update – I haven’t tried it yet, but some recent tweaking in the dev branch is yielding improved perf for the .Net port. They are still trying to fix bugs though….

Comment on SQLite for C# – Part 6 – SQLite Connection String Definitions by Gareth

Gareth — Fri, 22 Jan 2010 22:40:08 +0000

I’ve not come across that specifically, however if you are using the latest driver I would submit your question to the following forum.

http://sqlite.phxsoftware.com/forums/

The direct link to the bugs section is : http://sqlite.phxsoftware.com/forums/5.aspx

However before you submit your question/bug check to see if it has already been raised/answered – as it most likely will have been. Normally they are responsive and should be able to help,

Hope this helps,
Gareth

Comment on SQLite for C# – Part 6 – SQLite Connection String Definitions by BronskyB.

BronskyB. — Fri, 22 Jan 2010 11:16:41 +0000

Hi there!

Great tutorial and theory on SQLite.

However, there’s something I still haven’t figured out, and hoped maybe you could help me with this.

I have set up a WinForm application (C#) with an SQLite DB attached to it. Let’s call the DB ‘Mates’ and the table ‘bestFriends’. It has two columns, ‘firstName’ and ‘lastName’. I get my program to show the data from the table in both detail and datagrid views.

So here comes the problem. The ‘SaveItem’-button that VS put in has worked when I’ve used MS Access DBs, but just causes the program to crash when I use it with SQLite. Do you have any suggestions as to how I could make a save-button or edit the one that VS already put in?

Your help would be greatly appreciated,

BronskyB

Oslo, Norway

Comment on SQLite for C# – Part 1 – Am I allowed to use it? by Ahmed

Ahmed — Wed, 20 Jan 2010 18:45:36 +0000

Thank you for the great step-by-step lesson,carry on man

Comment on SQLite for C# – Part 6 – SQLite Connection String Definitions by Gareth

Gareth — Fri, 11 Dec 2009 17:02:07 +0000

You can perform encryption through your connection string, or via pragmas. As you are using C++ and not C# you may want to look at:
http://www.hwaci.com/sw/sqlite/see.html

Does that help?

Comment on SQLite for C# – Part 6 – SQLite Connection String Definitions by Kiran

Kiran — Fri, 11 Dec 2009 12:18:13 +0000

Can you explain how to encrypt an SQLite DB file in C++

Comment on Welcome to the Google Wave – what is the wave (and where is the board)… by Google Groups support joins Google Wave

Google Groups support joins Google Wave — Thu, 10 Dec 2009 08:27:34 +0000

[...] Welcome to the Google Wave – what is the wave (and where is the … [...]

Comment on SQLite for C# – Part 8 – Loading CSV/Pipe into SQLite via command line by Gareth

Gareth — Tue, 27 Oct 2009 00:40:37 +0000

I’ve only downloaded it enough to see how well the translation went. Got to say I dont like the generated code too much. Outside of that I’ve not had much to do with it. I would like to really see a native version as that avoids the whole 64 bit vs 32 bit question, and I would hope it would also help with performance (although the charp-sqlite doesnt reflect any performance gains). My hope is that the Mono team include it, or MS includes it as a native implementation

Comment on SQLite for C# – Part 8 – Loading CSV/Pipe into SQLite via command line by Sean

Sean — Wed, 14 Oct 2009 14:04:51 +0000

Have you played with the .Net port of SQLite? http://code.google.com/p/csharp-sqlite/

I’d be interested in knowing if you noticed any differences…

Comment on SQLite for C# – Part 8 – Loading CSV/Pipe into SQLite via command line by Jenny

Jenny — Fri, 09 Oct 2009 11:13:48 +0000

Thank you! for the very informative and useful writeup. Even those Wrox and Wiley’s heavy and expensive books couldn’t cleared what you have done in few lines.

Comment on SQLite for C# – Part 8 – Loading CSV/Pipe into SQLite via command line by Gareth

Gareth — Thu, 24 Sep 2009 11:56:15 +0000

Glad to have helped! There is information out there, the trick is finding it!

Comment on SQLite for C# – Part 8 – Loading CSV/Pipe into SQLite via command line by Raimis

Raimis — Wed, 23 Sep 2009 12:30:03 +0000

Thanks

You helped me to understand this a little bit better. Too bad there are not much information about c# SQLite around

Comment on SQLite for C# – Part 7 – Building SQLite.Net from source (and netmodules) by Gareth

Gareth — Wed, 16 Sep 2009 02:14:47 +0000

Glad to help , I have to say not representing the netmodule in the UI is far from intuitive when you only use the UI for feedback. Its one of those things you wish you didnt need to know about – if the UI helped you. However learning is always a good thing

Comment on C# Code coverage approaches and unit tests by Gareth

Gareth — Wed, 16 Sep 2009 02:10:51 +0000

Yes this is using MSTest, fortunately – or unfortunately depending on your perspective. While C# is catching up with the Java community this area is more commercial (aka less likely to get a free implementation). Which is a shame as if it was more standard people would use and understand the benefits of coverage more! If I were to pin my hopes I would think Mono may end up helping with the free/cheaper alternative. I’ve heard good things about NCover (not free), and I see http://www.mono-project.com/Code_Coverage has something – but I’ve not tried that one. If you try it feel free to comment!

Gareth

Comment on SQLite for C# – Part 7 – Building SQLite.Net from source (and netmodules) by tim

tim — Tue, 15 Sep 2009 17:44:44 +0000

I never even thought about looking at the csproj with a text editor. (Actually, for the briefest moment I did… but then I thought, shouldn’t everything be visible in Visual Studio?) Thanks for the nice writeup – I was going crazy trying to figure out how the .netmodule was generated.

Comment on C# Code coverage approaches and unit tests by Brian J. Sayatovic

Brian J. Sayatovic — Tue, 15 Sep 2009 12:49:04 +0000

I assume you’re using the “team” edition of studio to get code coverage with MSTest. I’ve come from a Java world where there were several “free” code-coverage options (Cobertura, Crap4J, etc.), so I was dismayed that I can’t find anything free for “MSTest”. Unit testing without code coverage is like driving blind.

Comment on GZipStream is helpful, but has some missing features by Gareth

Gareth — Fri, 28 Aug 2009 02:45:05 +0000

The example in the above examples should do the trick

// Gets natural decompressed file length from a compressed file. GZipHelper actual = new GZipHelper(); actual.GetFileInformation("CSharpHackerSmallTest.txt.gz"); Assert.AreEqual(119, actual.DecompressedLength);

Basically this is why the helper class was that the length of the uncompressed stream cannot be easily determined.

Comment on GZipStream is helpful, but has some missing features by Upendra

Upendra — Thu, 27 Aug 2009 06:06:29 +0000

Hi,
I am doing like this:
GZipStream objCompressedStream = new GZipStream(objmod, CompressionMode.Compress, true);
objCompressedStream.Write(btReadArray, 0, aiNo_of_bytes_read);

Now when I am trying to get length of objCompressedStream using objCompressedStream.Length property it throws exception that operation is not supported.

Can anyone suggest the alternatives or some way to get the length of compressed stream

Thanks

Comment on SQLite for C# – Part 2 – How do I setup a SQLite DB (without coding) by Gareth

Gareth — Tue, 25 Aug 2009 00:49:03 +0000

Sorry for the slowness for this to appear in the site, it got eaten! Secondarily I’m glad it helped!

As for the question I intentionally coded the path into it as it becomes apparent that we are really talking about a file. As for its location I would strongly recommend keeping the database with your application, or a subfolder beneath your application root. I would definitely not hard code it to be anything specific if you intend to be portable! The sizing shouldnt matter as the database manages its own size, but you will likely need to vacuum the file periodically.

Hope this helps some,

Gareth