The .NET Knowledge Sharing Thread

**dequadin** · 29-09-2009 10:29 AM

Originally Posted by FarligOpptreden

Awesome stuff. I'll try and get this stickied...

Thanks, that would be cool. This thread has a long way to go, I haven't even started on Generics, WinForms, Services and COM....

**FarligOpptreden** · 29-09-2009 10:36 AM

Right, lets hope the right person with the correct permissions responds to my humble little request...

EDIT: W00t! It's done!

**FarligOpptreden** · 29-09-2009 11:39 AM

Export data to Office 2007's XML-based formats:

Right, so you, like many other developers, have grown sick and tired of using the terrible (and mostly redundant) Office Interop APIs to create Excel and Word documents from your precious data... There is a solution in the form of OpenXML. If you didn't know it already, all Office 2007 XML-based documents are essentially an archived file filled with XML files. Don't believe it? Try renaming any .docx or .xlsx file to .zip and extract the contents to a folder. Ta-dah! Study the directory and file structure a bit, especially the .rels files, which indicate the relationship of all the files in the archive.

So, a more scalable solution to exporting Excel and Word files in the Office 2007 XML format, is to build up the necessary XML files in the correct directory structure, zip them up and rename to .docx or .xlsx (depending on the type of document you just created, obviously

). By conforming to the different Markup Languages specified in the OpenXML framework (i.e. WordML for Word Documents and SpeadsheetML for Excel Spreadsheets) you can easily export any of the data in your application to document formats that business users are constantly badgering you for...

You might be wondering how on earth you are going to zip up the files from C#, right? Have a look at the SharpZipLib .NET Zip Library. It works wonders.

So, what's the best thing about this solution? You don't need Office installed on the client or server computer! You might be concerned about the fact that about 75% of your target market might still be stuck on Office 2003, right? Well, that's not necessarily a problem anymore... Just redirect the users here and they will be basking in the OpenXML document glory in no time!

**dequadin** · 30-09-2009 12:33 PM

WinForms

General

Inter-Form Communication

Notify Icon AKA System Tray Icon

Notify Icon control in .NET 2.0 with balloon tips
SystemTrayNotifyIcon with Event Generator <- If you want to animate your NotifyIcon

Application/User Settings

Win32 API

**FarligOpptreden** · 30-09-2009 01:11 PM

I'll see if I can dig up some resources for WinForms on creating custom-look menus. Struggled with it a few years ago and it's bound to be useful to someone...

**AcidRaZor** · 01-10-2009 04:07 PM

Real world tip for n00bs: If you ask for advice, be prepared to follow it before commenting about how it won't work. Experienced programmers take the time out of their day to help you. Try it. If it doesn't work or you don't understand why they suggested the advice or piece of code, please feel free to ask them about it. Some code won't compile because most help will be in the form of pseudo code. It's up to you to interpret this into something workable for yourself.

Remember, programming is not about language. It's about logic. If you understand the logic, you can apply it to any language of programming you desire. If you expect others to give you working code for a problem they couldn't give two ****s about, don't whine about it.

**AcidRaZor** · 02-10-2009 11:18 AM

http://www.ajaxload.info/

For all your loading images' needs

**FarligOpptreden** · 02-10-2009 11:46 AM

Originally Posted by AcidRaZor

http://www.ajaxload.info/

For all your loading images' needs

Thank you, thank you, THANK YOU! I could KISS you right now!

LOL@"Hey! This service is Web 2.0!"

**Pr⊕phet** · 02-10-2009 02:28 PM

What do you expect the output of this program to be?

Code:

 

using System; 

class Foo
{
    public Foo(string s)
    {
        Console.WriteLine("Foo constructor: {0}", s);
    }
    public void Bar() { }
}

class Base
{
    readonly Foo baseFoo = new Foo("Base initializer");
    public Base()
    {
        Console.WriteLine("Base constructor");
    }
}

class Derived : Base
{
    readonly Foo derivedFoo = new Foo("Derived initializer");
    public Derived()
    {
        Console.WriteLine("Derived constructor");
    }
}

static class Program
{
    static void Main()
    {
        new Derived();
    }
}

**FarligOpptreden** · 02-10-2009 02:52 PM

Originally Posted by Necuno

What do you expect the output of this program to be?

Code:

 

using System; 

class Foo
{
    public Foo(string s)
    {
        Console.WriteLine("Foo constructor: {0}", s);
    }
    public void Bar() { }
}

class Base
{
    readonly Foo baseFoo = new Foo("Base initializer");
    public Base()
    {
        Console.WriteLine("Base constructor");
    }
}

class Derived : Base
{
    readonly Foo derivedFoo = new Foo("Derived initializer");
    public Derived()
    {
        Console.WriteLine("Derived constructor");
    }
}

static class Program
{
    static void Main()
    {
        new Derived();
    }
}

Shouldn't this rather go in the Programming Quiz thread?

**Pr⊕phet** · 02-10-2009 02:55 PM

Originally Posted by FarligOpptreden

Shouldn't this rather go in the Programming Quiz thread?

nope, if you knew the answer you would also know the why* it is so and that is knowledge to share or is it ?

*spoiler warning

well i suppose i should rather just link the tut

, pleads mini guilty....

**Pr⊕phet** · 05-10-2009 10:06 AM

Lambda, Lambda, Lambda - Uncovering the Mystery Behind Lambda Expressions

Introduction
At first glance, a lambda expression looks like something your professor may have written on the blackboard in calculus class, but in reality, it is "syntactic sugar" built into the C# language over delegates. In this article, we will begin to explore the nuances of lambda expressions by seeing how they they relate to delegates and how they can be used to implement a popular mathematical formula, the quadratic equation.

**FarligOpptreden** · 20-10-2009 03:20 PM

A simple code snippet to compile a piece of C# code at runtime into an executable, saved at the specified path. The sample adds the necessary assembly files to compile a Windows Application:

Code:

Microsoft.CSharp.CSharpCodeProvider provider = new Microsoft.CSharp.CSharpCodeProvider();
System.CodeDom.Compiler.CompilerParameters compiler_params = new System.CodeDom.Compiler.CompilerParameters();

compiler_params.OutputAssembly = path;
compiler_params.GenerateExecutable = true;
compiler_params.ReferencedAssemblies.Add("System.dll");
compiler_params.ReferencedAssemblies.Add("System.Drawing.dll");
compiler_params.ReferencedAssemblies.Add("System.Windows.Forms.dll");

System.CodeDom.Compiler.CompilerResults results = provider.CompileAssemblyFromSource(compiler_params, source);

After the code is executed, the "results" variable will contain any compiler errors, so you can easily iterate through the errors to see what went wrong.

**dequadin** · 21-10-2009 08:47 AM

Dynamically Compiled Assemblies

**dequadin** · 29-10-2009 10:50 PM

.NET and COM Interop

General .NET COM Articles/Tutorials

MSDN on .NET & COM

ActiveX in .NET

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