Navigation to the webpage was canceled chm

To fix this problem :
Right-mouse click it in Windows Explorer on chm file and select Properties. Then click Unblock.
Here is article describes the how to work around it : http://support.microsoft.com/kb/896054

Strong name validation failed.

To resolve this issue run following command in Visual Studio command line:
sn -Vr "[PathToProblemDLL]\[ProblemDll].dll"

c# extensions

     
//A. allows value.In("one", "two" , "tree") 
public static bool In<T>(this T source, params T[] list) 
{ 
  if(null==source) throw new ArgumentNullException("source"); 
    return list.Contains(source); 
} 
 
//#B Enable quick and more natural string.Format calls 
public static string F(this string s, params object[] args) 
{ 
   return string.Format(s, args); 
} 
 
// like this one "lala {1} ".F(one, two) 
 
//#C nice comparison tool : 
public static bool Between<T>(this T actual, T lower, T upper) where T : IComparable<T> 
{ 
    return actual.CompareTo(lower) >= 0 && actual.CompareTo(upper) < 0; 
} 
 
//Allows to have : 
if (myNumber.Between(3,7)) 
{ 
  // .... 
} 
 
//#D a map function 
    public static void ForEach<T>(this IEnumerable<T> @enum, Action<T> mapFunction) 
    { 
        foreach (var item in @enum) mapFunction(item); 
    } 
 
//allows to run function for every element  
// like this one : 
new { itemA, itemB, itemC } 
    .ForEach(item => { 
        item.Number = 1; 
        item.Str = "Hello World!"; 
}); 
     

moving data between two list boxes +jquery

   
 
<select id="SelectLeft" multiple="multiple"> 
            <option value="1">Australia</option> 
            <option value="2">New Zealand</option> 
            <option value="3">Canada</option> 
            <option value="4">USA</option> 
            <option value="5">France</option> 
      </select> 
 
      <input id="MoveRight" type="button" value=" >> " /> 
      <input id="MoveLeft" type="button" value=" << " /> 
 
      <select id="SelectRight" multiple="multiple"> 
</select> 
 
 
 
 
<script language="javascript" type="text/javascript" src="http://code.jquery.com/jquery-1.4.1.min.js"></script> 
    <script language="javascript" type="text/javascript"> 
        $(function() { 
            $("#MoveRight,#MoveLeft").click(function(event) { 
                var id = $(event.target).attr("id"); 
                var selectFrom = id == "MoveRight" ? "#SelectLeft" : "#SelectRight"; 
                var moveTo = id == "MoveRight" ? "#SelectRight" : "#SelectLeft"; 
  
                var selectedItems = $(selectFrom + " :selected").toArray(); 
                $(moveTo).append(selectedItems); 
                selectedItems.remove; 
            }); 
        }); 
</script> 
       

cross platform mobile development comparison

There's a detailed comparison of all these toolkits in this article here: Modern Cross Platform Development.
There are a number of other solutions around like
Rhodes,
Titanium,
PhoneGap,
JUCE,
MoSync,
Corona and
Moai.
Each of these use a bunch different languages, including HTML5/JS/CSS, Lua, Ruby, Python and C++. All except Corona are open source and free.