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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘.NET’ Category

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Embedded Interop Assemblies (via: CLR and DLR and BCL, oh my! – Whirlwind Tour around .NET 4) – Scott Hanselman

Posted by jpluimers on 2013/06/26

Need to put some research in this, as I have the idea that under some circumstances embedding Office interop assemblies not always works.

–jeroen

via: CLR and DLR and BCL, oh my! – Whirlwind Tour around .NET 4 (and Visual Studio 2010) Beta 1 – Scott Hanselman.

Posted in .NET, .NET 4.0, .NET 4.5, Development, Office PIA, Software Development | Leave a Comment »

Samples Environment for Microsoft Chart Controls – Release: Samples for Chart Control – .NET Framework 4

Posted by jpluimers on 2013/06/19

I hadn’t done Charting for a while, but these got going very quickly:

Samples Environment for Microsoft Chart Controls – Release: Samples for Chart Control – .NET Framework 4.

There are example downloads for ASP.NET and WinForms requiring .NET 4 or higher.

In addition, these starting points also proved to be really helpful:

Since my objective was adding charts to an existing WinForms business app, this was the namespace at hand: System.Windows.Forms.DataVisualization.Charting Namespace ().

If you are at .NET 3.5, then start at DataVisualization.Charting.Chart simple example – C# – Snipplr Social Snippet Repository.

–jeroen

Posted in .NET, .NET 4.0, .NET 4.5, ASP.NET, C#, C# 3.0, C# 4.0, Development, Software Development, VB.NET, Visual Studio 2010, WinForms | Leave a Comment »

C#/.NET/LINQ: DotNetStat: netstat.exe with TCP ports grouped by host

Posted by jpluimers on 2013/06/18

A lot of people have written .NET equivalents of netstat code. Basically there are two starting points:

I adapted the first, made the output very much like the built-in Windows netstat, and added some LINQ code to demonstrate grouping and ordering.

Now you get grouped output like this:

Distinct Remote Address:Port pairs by Remote Address:
107.20.249.140   443
107.20.249.78    443
127.0.0.1        6421, 19872
192.168.1.81     17500, 61678
199.47.218.159   443
199.47.219.148   80
199.47.219.160   443
23.21.220.140    443
23.23.127.94     443

The code below is part of the DotNetStat example.

It demonstrates a few important LINQ aspects beyond the LINQ Query Expressions (C# Programming Guide) intro and 101 LINQ Samples in C#.:

Read the rest of this entry »

Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Jon Skeet, Software Development | Leave a Comment »

.NET/C# – CreateTemporaryRandomDirectory (via: Stack Overflow)

Posted by jpluimers on 2013/06/13

A while ago I needed unique temporary directories. This appears not to be standard functionality in the .NET System.IO.Path or System.IO.Directory class.

Josh Kelley asked a question about it before, and I adapted the example by Scott-Dorman based on GetTempPath and GetRandomFileName  and comments by Chris into a more robust CreateTemporaryRandomDirectory one that works in .NET 2.0 and higher:

using System.IO;

namespace BeSharp.IO
{
    public class DirectoryHelper
    {
        public static string GetTemporaryDirectory()
        {
            do
            {
                try
                {
                    string tempPath = Path.GetTempPath();
                    string randomFileName = Path.GetRandomFileName();
                    string tempDirectory = Path.Combine(tempPath, randomFileName);
                    Directory.CreateDirectory(tempDirectory);
                    return tempDirectory;
                }
                catch (IOException /* ex */)
                {
                    // continue
                }
            } while (true);
        }
    }
}

You can call it like this: Read the rest of this entry »

Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development | 2 Comments »

.NET/C#: from Unicode to ASCII (yes, this is one-way): converting Diacritics to “regular” ASCII characters.

Posted by jpluimers on 2013/06/11

A while ago, I needed to export pure ASCII text from a .NET app.

An important step there is to convert the diacritics to “normal” ASCII characters. That turned out to be enough for this case.

This is the code I used which is based on Extension Methods and this trick from Blair Conrad:

The approach uses String.Normalize to split the input string into constituent glyphs (basically separating the “base” characters from the diacritics) and then scans the result and retains only the base characters. It’s just a little complicated, but really you’re looking at a complicated problem.

Example code:

using System;
using System.Text;
using System.Globalization;

namespace StringToAsciiConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string unicode = "áìôüç";
            string ascii = unicode.ToAscii();
            Console.WriteLine("Unicode\t{0}", unicode);
            Console.WriteLine("ASCII\t{0}", ascii);
        }
    }

    public static class StringExtensions
    {
        public static string ToAscii(this string value)
        {
            return RemoveDiacritics(value);
        }

        // http://stackoverflow.com/questions/249087/how-do-i-remove-diacritics-accents-from-a-string-in-net
        private static string RemoveDiacritics(this string value)
        {
            string valueFormD = value.Normalize(NormalizationForm.FormD);
            StringBuilder stringBuilder = new StringBuilder();

            foreach (System.Char item in valueFormD)
            {
                UnicodeCategory unicodeCategory = CharUnicodeInfo.GetUnicodeCategory(item);
                if (unicodeCategory != UnicodeCategory.NonSpacingMark)
                {
                    stringBuilder.Append(item);
                }
            }

            return (stringBuilder.ToString().Normalize(NormalizationForm.FormC));
        }
    }
}

–jeroen

Posted in .NET, .NET 3.5, .NET 4.0, .NET 4.5, ASCII, C#, C# 3.0, C# 4.0, C# 5.0, Development, Encoding, Software Development, Unicode | Leave a Comment »

VS2012.2 ISOs for Visual Studio Updates: off-line installers the way they should be (via: The Visual Studio Blog)

Posted by jpluimers on 2013/06/07

I got a bit sick of the VS2012.2.exe on-line installer having to re-download each piece on every Visual Studio 2012 RTM machine to upgrade.

Here is the VS2012.2.iso for off-line installation.

Found it through Provide Visual Studio updates as an ISO image for offline installation – Customer Feedback for Microsoft.

–jeroen

Announcing availability of ISOs for Visual Studio Updates – The Visual Studio Blog – Site Home – MSDN Blogs.

.

Posted in .NET, .NET 4.5, Development, Software Development, Visual Studio 11, Visual Studio and tools | Leave a Comment »

Some links on Registry and LINQ

Posted by jpluimers on 2013/05/28

A few notes for my research list:

One important thing that most of the code examples miss is to close the registry keys when they are done with them.

 

–jeroen

Posted in .NET, .NET 4.0, .NET 4.5, C#, C# 4.0, C# 5.0, Development, Software Development | Leave a Comment »

Don’t pass interfaces between application architectures over a DLL boundary

Posted by jpluimers on 2013/05/15

It is unwise to pass objects allocated in one framework over a DLL boundary to a different framework.

In the case of Using C dll in delphi return nothing, someone tries to pass an Interface to some memory in the C side over to Delphi.

Unless that interface is COM based, don’t do that!

In a more general way: don’t pass memory allocated on the DLL side over to the client side, no matter what kind of client you have.

From the DLL, either pass simple types, or fill buffers allocated at the client side.

Edit:

There was a nice Delphi DLL return string from C# … .NET 4.5 Heap Corruption but .NET 4.0 works? Explain please? – Stack Overflow question explaining in detail what to do for strings in a specific case: use the COM heap on the Delphi side using CoTaskMemAlloc (actually it uses the OLE task memory allocator as the Old New Thing explains).

–jeroen

via: Using C dll in delphi return nothing – Stack Overflow.

Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, Delphi, Delphi 1, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi 8, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Development, Software Development | 5 Comments »

Time for a golden oldie: Pragmatic Software Development Tips

Posted by jpluimers on 2013/05/09

From the century start era of The Pragmatic Bookshelf | The Pragmatic Programmer, a – still valid – list of Pragmatic Software Development Tips.

From Care About Your Craft, via DRY, Some Things Are Better Done than Described, Keep Knowledge in Plain Text, Work With a User to Think Like a User, Find the Box, and many others till Sign Your Work.

–jeroen

via: The Pragmatic Bookshelf | List of Tips.

Posted in .NET, C++, Cloud Development, COBOL, CommandLine, Delphi, Development, Fortran, iSeries, Java, Pascal, RegEx, Scripting, Software Development, Web Development, xCode/Mac/iPad/iPhone/iOS/cocoa | 3 Comments »

What programmers font (monospaced!) do you like best?

Posted by jpluimers on 2013/05/08

Lucida Console Sample (thanks Wikimedia!)

Lucida Console Sample (thanks Wikimedia!)

I’m in search to see if there is a better programmers font than the monospaced Lucida Console mainly to be used in Visual Studio, Delphi, the Windows console, Xcode and Eclipse. What I love about Lucida Console design is the relatively large x-height combined with a small leading (often called “line height”). This combines very readable text, and a lot of code lines in view. Lucida has two small drawbacks, see the second image at the right:

  • The captial O and digit 0 (zero) are very similar.
  • Some uppercase/lowercase character pairs are alike (because of the large x-height)

But, since the font hasn’t been updated for a very long time, lots of Unicode code points that are now in current fonts, are missing from Lucida Console (unless you buy the [Wayback] most recent version that has 666 characters from Fonts.com) Well, there are dozens of monospaced fonts around, so I wonder: which ones do you like? In the mean while, I’m going to do some experimenting with fonts mentioned in these lists:CcKkOoSsUuVvWwXxZz are much alike.

A few fonts I’m considering (I only want scalable fonts, so raster .fon files are out):

I have tried Adobe Source Code Pro about half a year ago. That didn’t cut it: problem with italics in Delphi, and not enough lines per screen. [Wayback] New Open Source monospaced font from Adobe: Source Code Pro.

–jeroen

Posted in .NET, Adobe Source Code Pro, Apple, Delphi, Delphi 2007, Delphi XE3, Development, Encoding, Font, Lucida Console, Mac, Mac OS X / OS X / MacOS, Power User, Programmers Font, Software Development, Typography, Unicode, Visual Studio 11, Visual Studio 2005, Visual Studio 2008, Visual Studio 2010, Visual Studio and tools, Windows, Windows 7, Windows 8, Windows Server 2008 R2, Windows XP, xCode/Mac/iPad/iPhone/iOS/cocoa | 43 Comments »

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