It's just a preference. I like things to be as loosley coupled as possible. I prefer to bind to collections of objects, rather than strongly typed datasets. Like most things it depends on what your...

Oops perhaps you are doinf a Forms project not a web project.

I have started a forms project and I can't get the binding source to use the new query either yet. I am too tired at the moment.
...

The query has the single column you want 'Expr1' bind the textbox to that.

I am not very knowledgeable with BindingSources I am afraid, I don't like them. I prefer to have simple business objects....

SELECT Name + '\n' + Street + '\n' + ZipCode +'\n' + City
FROM Customers
WHERE (CustomerID = @1)


This assumes none of the columns allow NULLS. Otherwise you will need to use ISNULL(name, '') +...

Well UI Design is not specific to any platform really. But what about this?

http://msdn2.microsoft.com/en-us/library/aa350483.aspx

No. The dll is one or more compiled .cs files, it is a class library. Microsoft calls them assemblies because they are different to the old style COM dll's where a .tlb (type library) also had to be...

Absolutely right , typo on my part tut tut.

Encryption thpt no idea not something I've really ever done i'm afraid.

Easy. this should work, you just need a static class:

Add a new class.cs file to the project and stick something like this in it.

static class GlobalClass
{
private string...