, (comma operator)

The comma operator evaluates both of its operands and returns the value of the second operand.

Syntax

expr1, expr2

Parameters

expr1, expr2—Any expressions

Description

You can use the comma operator when you want to include multiple expressions in a location that requires a single expression. The most common usage of this operator is to supply multiple parameters in a for loop.

For example, if a is a two-dimensional array with 10 elements on a side, the following code uses the comma operator to increment two variables at once. The code prints the values of the diagonal elements in the array:

	for (var i=0, j=10; i <= 10; i++, j--)
  Console.Write("a["+i+","+j+"]= " + a[i,j])