The downside of StringBuilder (and secretly String.Format) is that the allocation/release cost is several times that of the base String class. I'll see if I can find the MS developers' post, but if I...

This is better, unless you do it often. Remeber each + used allocates and floats another copy of the string.

A dynamic count of threads isn't always a good idea, in fact it's often a bad idea. Since you have a quad core machine you should start with 4 threads (one per core), then try 8, 16, 20, etc until...

You're asking for a lot here. Why is it you want to do this in C# and not Flash or some easy to animate platform?

I recommend using HTML + JavaScript. That is exactly what they were designed for.

I don't see where you Timer is declared. It's quite possible that it's losing scope and being garbage collected.

Well first thing I see the lines


// Display tax
Console.Write("$");
Console.Write(dectax);

// Keep window open
...

Personally, I'd make an interface... let's call it IFilterable with a required method let's call Filter.


public interface {
bool Filter( );
}


The each object in the collection could...

Um...

Data Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=myPassword;

Or in the case of one system I work on:

Data Source=HQNVSQL07;Initial...

This is a problem with your use of public, protected, and private. Probably somewhere in your inheritance chain. Most likely forgot to add public infront of a class declaration somewhere.

You're looking for DRM software - online... from people willing to give free help... yeah, makes total sense...

www.connectionstrings.com

use it, love it.

Code looks fine, might be a NTFS security issue.

huh?

I'm gonna guess what the heck you mean here, and hand you an answer.


List<string> a = new List<string>();
List<string> b = new List<string>();

...

My guess:

Windows Server uses much better security modeling than Winows XP does. You really should develop on Windows Vista with UAC turned on (make sure you never trip the UAC dialog with your...

I think you're asking about the System.Security.Principal namespace.

Define "an interface for a C# program". I have to assume you don't mean an interface like IEnumerable, so I'm not sure what you mean.

A standard piece of code I find myself using and reusing, time and time again...


using ( FileStream fileStream = File.OpenRead(CONFIG_PATH) ) {
Regex entryRegex = new...

You still need to set up your methods accordingly, but I find using C/C++ LoadLibrary and GetProcAddress to get the other native code and then calling the calling code with C++/CLI is much easier way...

You can do it, but it's not recommended. Usually people who want to do their own scheduling set up a Windows Service to do so. You can create one easily with Visual Studio in C#.

AFAIK .Net cannot...

Use a System.Text.RegularExpressions.Regex object.


Regex linkRegex = new Regex(@"<link>\s*(?<link>[^<]+)\s*</link>", System.Text.RegularExpressions.RegexOptions.Compiled);
Regex...

You'll have to trust me on this, but you really DO NOT WANT to store the image in your database. Instead store a file path or Uri to the image in your database and read it from disk when you want to...

Good news, and the code doesn't look bad at all. Job well done. :-)

Assuming the user your running as has access to the remote server via a windows share, you can just use System.IO.File.Copy to move files. It's really that easy.
If you need to do FTP, it could be...

Check the way your decimal columnis defined in SQL server. It's possible you've defined it to not allow values >= 1.0. Use MSDN to reference how to properly specify the column.

Do the same check...

if youjustneed the fast lookup ability of the dictionary, I believe the compact framework supports the System.Collections namespace, so you can just use a HashTable object which is even faster.

How are you doing the file compare, it is entirely based on path + filename?

CLR Managed code can call methods in another DLL via P/Invoke, but I recommend not doing that and instead having the native portion of you code handle dealing with other unmanaged code blocks.
...

http://www.connectionstrings.com/ for the win!

The basics are there but a few suggestions for you:


using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.IO;

public class Program {

Is createMATLABThread managed or native? If it's managed, you need to create a delegate to pass.

Delegates are manage codes version of function pointers. So, I don't think you're getting from...

What the...?! Logical AND is a CPU operator that flips bits, how could you possibly do that to a System::String object?

You're looking for either a System::Text::RegularExpressions::Regex or &&.
...

Are you using web controls or realy code? :-P

As a developer who started in C then migrated to C++ then to C# I tend to avoid as many of the built in controls MSFT offers with the .Net runtime. My...

... Just compile it as C++/CLI and change all the * to ^, and all the cout to System::Console::WriteLine() calls. Then fix the compiler complaints.

Yup, it's a parse error. VC8+ goes right to the line and complains.

If you're only trying to emulate a click of the back button, don't use C# use Javascript. Add this code to you page:


<button onlick="window.history.go(-1)">Back</button>

Good catch on the .lib file, after using C# for a while you tend to forget about stuff like that.

I don't have any where to point you for C++/CLI information other than MSDN. I've learned mostly...

Look at these two pieces of code, they mix managed and unmanaged just fine. More than likely you've not included a header file that you need in order to compile with managed code. make sure that you...

You'd be better off (if possible) creating a mixed managed/native DLL in C++/CLI (http://msdn.microsoft.com/en-us/magazine/cc163681.aspx) and adding that DLL as a reference to your C# project.