>>>Hi everybody,
>>>
>>>I have a solution consisting of multiple projects. I found this extension method for the string proper case
>>>
>>>http://www.extensionmethod.net/Details.aspx?ID=101
>>>
>>>(I also read Rick Strahl implementation where the same method was discussed and then lots of interesting comments followed).
>>>
>>>My question is - where should I create such extension methods? In which project and hierarchy and what is the good name for such methods and should I place them all in one file?
>>>
>>>Right now I have
>>>
>>>Objects
>>>Data
>>>ConsoleApp (this is for testing only)
>>>Main Web project
>>>
>>>in my solution.
>>>
>>>I want these extension methods to be re-usable in other projects also.
>>>
>>>Thanks in advance.
>>
>>
>>Put extension methods in a separate namespace
>>
>>>I want these extension methods to be re-usable in other projects also.
>>
>>I suppose you have a common project that is used in all solutions ? If yes, put them there in a separate namespace
>
>Not yet. I think I need to discuss this with my colleagues before I'll proceed. But just for the reference, can you tell me how you have such things organized? Say, do you create a class library project in some common directory and have
>StringExtensions
>MathExtensions (for example)
>
>or just to give me an idea.
>
>Thanks again.


As Viv mentions - create a project with just extension methods if necessary

I have a class per functionality

   ExtensionMethods 
       Arithmetic.cs   ( from Bill Clinton)
       BitOperations.cs
       Comparison.cs      ( eg  IsBetween() and InList() )
       Conversion.cs

But you are free to organize them as you like