C#

LINQ

Multiple Subsequent "Main" Forms in C# Apps

22 Nov 2011 by #realJSOP

A useful technique that could be used for winform apps which require a login dialog

Windows Service Gotcha (or Test Your Code, Regardless of How Small Your Changes Are)

22 May 2010 by #realJSOP

No change is too small for a complete regression test.

Windows

testing

Personal Agility - Thinking Outside Your Own Box

22 May 2010 by #realJSOP

Essential programmer skill - the ability to approach a problem from more that one direction.

programming

Setting Enumerators From Questionable Data Sources (for C# and VB)

9 Jul 2011 by #realJSOP

Avoid exceptions when setting enumerators from unknown/untrusted sources.

Resolving Paths in a Multi-Folder WebSite

23 Jun 2010 by #realJSOP

A low-impact method for getting the appropriate path on a web page.

A Generic Comparison Class for Collection Items

26 Aug 2010 by #realJSOP

You probably have better things to do than writing tedious comparison methods.

Setting non-numeric grid row/column sizes in WPF/Silverlight

22 May 2010 by #realJSOP

Programatically set grid row/column sizes (yes, even "Auto", "*", and "X*" - thanks Nish).

WPF

Using Extension Methods To Avoid XML Problems

10 Jul 2014 by #realJSOP

Extension methods can help you avoid sticky situations.

XML

C#3.0

LINQ

Pass Dynamic List of Parameters to Web Service

21 May 2010 by #realJSOP

Make interfacing with your web service simpler and more maintainable

webservice

Delegates Are Good, and Good For You

29 Aug 2011 by #realJSOP

Using a delegate could pull your butt out of the fire when you don't want to refactor code to add functionality.

Scanning Folders On A Network Share

6 Jun 2010 by #realJSOP

It's not as simple as just calling DirectoryInfo.GetFiles()

Silverlight Exceptions Via the ErrorWindow

9 Jun 2010 by #realJSOP

The Silverlight navigation app ErrorWindow exposes the last exception thrown, but doesn't show the INNER exceptions. Here's how you can do it.

Silverlight - Programatically Re-using the Same Style

19 Jun 2010 by #realJSOP

What to do if you want to resue a style for more than one component of a particular type on a given Silverlight Page

Get Mouse Click relative Position

12 Aug 2010 by #realJSOP

If you need to get the position the mouse was clicked, in relation to a specific UI Element, this might help

Bind Enum data to Dropdown List By Sorting

26 Dec 2010 by #realJSOP

Can't you just call Enum.GetNames(), and then bind to the collection returned by that method?

C#3.0

Extension Methods to Reverse a String and StringBuilder Object

1 Jan 2011 by #realJSOP

We're up to .NET 4 and MS *still* hasn't given us this simple functionality.

Could not find a part of the path while doing a File Copy

2 Mar 2012 by #realJSOP

If at all possible, never give your code the opportunity to fail. If there's any possibility at all that you can prevent an error condition from being raised, do it. try{ if (!string.IsNullOrEmpty(FileName)) { string newPath = System.IO.Path.Combine(FilePath,...

C#4.0

Partial DateTime Object Equality

19 Jan 2011 by #realJSOP

Determine if specified date/time properrties are equal

Is Your App Running As Administrator?

24 Jan 2011 by #realJSOP

How to make your app detect whether or not it's running in admin mode.

Use Custom Events from your WCF ServiceHost

26 Jan 2011 by #realJSOP

When you need to communicate with the app that contains your ServiceHost object, use custom events

WCF

Does Your App Know Where it's Running

2 Feb 2011 by #realJSOP

How to determine if your .Net app is running in the Visual Studio IDE

How to Toggle String Case in .Net

9 Feb 2011 by #realJSOP

StringBuilder mystring = new StringBuilder("AbCd");for (int i = 0; i

Count Number of Unique Colors in an Image

19 Feb 2011 by #realJSOP

Determine the number of unique colors in an image

Bitmap

Is Your string usable in the SL4 RichTextBox

7 Mar 2011 by #realJSOP

Extension method that checks for a properly Xaml-ized string

string

Admit When You're Wrong, Delete the Code, and Move On

4 Apr 2011 by #realJSOP

What to do when the "you're a moron" epiphany smacks you in the head just after you've convinced yourself you're pretty clever.

Silverlight4

Get Your Silverlight MainPage

9 May 2011 by #realJSOP

Get access to your Silverlight MainPage object

See if a Flags Enum is Valid

10 May 2011 by #realJSOP

See if an integer value is a valid value for the given "flags" enumerator

No More Session Variable Misspellings

23 Jun 2011 by #realJSOP

One way to guarantee uniqueness and avoid misspelling your session variable names

Maintain Query String after Forms Authentication cookie expires

5 Jul 2011 by #realJSOP

I do it this way:0) Create a base page class, and store the current page's url (you can do this any number of ways, so I'll leave it to your imagination):public class MyBasepage : System.Web.UI.Page{ public string CurrentUrl { get; set; } }1) Store the page's Url to a...

See if a Flags enum is valid

7 Jul 2011 by #realJSOP

.Net 4 has the enum.HasFlag() method, which kinda obsoletes this tip. :)

Reverse of a string without using the Reverse function in C# and VB

23 Jul 2011 by #realJSOP

I wouldn't create a class for this. I'd make it an extension method, and then do this:public static class String Extensions{ public static string Reverse(this string value) { value = // do your reverse code here; return value; }}// Usage:string x...

C#4.0

Clear a DataRow Item (as opposed to deleting it)

26 Jul 2011 by #realJSOP

One way to effectively zero the columns any DataRow object.

SQL

Automatically Display Menu on Hover

14 Sep 2011 by #realJSOP

How to automatically display a Winforms menu when the mouse is hovered over an item

Find the count of a weekday between two dates without iterating/looping

10 Nov 2011 by #realJSOP

How about this?public static class ExtendDateTime{ public int CountWeekDays(this DateTime thisdate, DateTime thatDate) { int days = Math.Abs((thisDate - thatDate).Days) + 1; return = ((days/7) * 5) + (days % 7); }}Usage would be like this:DateTime...

DateTime

Multiple User-Selectable Main Forms

22 Nov 2011 by #realJSOP

Allow any number of forms to be used as a main form with easy transitions between forms