Naming Convention in c#

Pascal Naming Convention
Capitalizes the first character of each word (including acronyms over two letters in length), as shown in the following examples:

PropertyDescriptor
HtmlTag

A special case is made for two-letter acronyms in which both letters are capitalized, as shown in the following identifier:

IOStream

This naming convention is used for 
1) Class Names
2) Method Names
3) File Names


Camel Naming Convention

The camelCasing convention, used only for method parameter names and variables.

capitalizes the first character of each word except the first word, as shown in the following examples. As the example also shows, two-letter acronyms that begin a camel-cased identifier are both lowercase.

propertyDescriptor
ioStream
htmlTag