Programming terms – field, member, properties (C#)

In C# :

fields : These are variables declared at the class level.

public class SomeClass
{
    private int someInteger; // This is a field
    public double someDouble; // This is another field
    protected StringBuidler stringBuidler; // Still another field
}

properties : Often used as accessors to a private field of a class, they can provide get and set methods that wrap some logic around the field manipulation.

public class SomeClass
{
    private StringBuilder stringBuilder;

    // Property declaration
    public StringBuilder StringBuilder
    {
        get 
        { 
            if(this.stringBuilder == null)
                this.stringBuilder = new StringBuidler();

            return this.stringBuilder;
        }
        set
        {
            if(this.stringBuilder == null)
                this.stringbuilder = value;
        }
    }
}

members : Includes fields, properties, methods, events of a class.