Order of items in classes: Fields, Properties, Constructors,

According to the StyleCop Rules Documentation the ordering is as follows.

Within a class, struct or interface: (SA1201 and SA1203)

Constant Fields
Fields
Constructors
Finalizers (Destructors)
Delegates
Events
Enums
Interfaces
Properties
Indexers
Methods
Structs
Classes
Within each of these groups order by access: (SA1202)

public
internal
protected internal
protected
private
Within each of the access groups, order by static, then non-static: (SA1204)

static
non-static
Within each of the static/non-static groups of fields, order by readonly, then non-readonly : (SA1214 and SA1215)

readonly
non-readonly
An unrolled list is 130 lines long, so I won't unroll it here. The methods part unrolled is:

public static methods
public methods
internal static methods
internal methods
protected internal static methods
protected internal methods
protected static methods
protected methods
private static methods
private methods
The documentation notes that if the prescribed order isn't suitable --- say, multiple interfaces are being implemented, and the interface methods and properties should be grouped together --- then use a partial class to group the related methods and properties together.

// Source http://stackoverflow.com/questions/150479/order-of-items-in-classes-fields-properties-constructors-methods