Capitalization Styles

.NET Framework General Reference
Capitalization Styles

Use the following three conventions for capitalizing identifiers.

Pascal case

The first letter in the identifier and the first letter of each subsequent concatenated word are capitalized. You can use Pascal case for identifiers of three or more characters. For example:
Copy Code

BackColor

Camel case

The first letter of an identifier is lowercase and the first letter of each subsequent concatenated word is capitalized. For example:
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backColor

Uppercase

All letters in the identifier are capitalized. Use this convention only for identifiers that consist of two or fewer letters. For example:
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System.IO
System.Web.UI

You might also have to capitalize identifiers to maintain compatibility with existing, unmanaged symbol schemes, where all uppercase characters are often used for enumerations and constant values. In general, these symbols should not be visible outside of the assembly that uses them.

The following table summarizes the capitalization rules and provides examples for the different types of identifiers.