() Operator (C# Reference)

In addition to being used to specify the order of operations in an expression, parentheses are used to perform the following tasks:

  1. Specify casts, or type conversions.

    double x = 1234.7;
    int a;
    a = (int)x; // Cast double to int    
  2. Invoke methods or delegates.



A cast explicitly invokes the conversion operator from one type to another; the cast fails if no such conversion operator is defined. To define a conversion operator, see explicit and implicit.

The () operator cannot be overloaded.

For more information, see Casting and Type Conversions.

For more information about method invocation, see Methods.

C# Language Specification

For more information, see the C# Language Specification. The language specification is the definitive source for C# syntax and usage.

See Also