Question

I have the following enumerated type:

        /// <summary>
        /// TTE Node types.
        /// </summary>
        public enum E_TTE_NODES
        {
            /// <summary>
            /// Represents FCM 0
            /// </summary>
            E_FCM0 = 0,

            /// <summary>
            /// Represents FCM 1
            /// </summary>
            E_FCM1,

            /// <summary>
            /// Represents FCM 2
            /// </summary>
            E_FCM2,

            /// <summary>
            /// Represents DCM 0
            /// </summary>
            E_DCM0,

            /// <summary>
            /// Represents DCM 1
            /// </summary>
            E_DCM1,

            /// <summary>
            /// Represents DCM 2
            /// </summary>
            E_DCM2,

            /// <summary>
            /// Represents CCM 0
            /// </summary>
            E_CCM0,

            /// <summary>
            /// Represents CCM 1
            /// </summary>
            E_CCM1,

            /// <summary>
            /// Represents CCM 2
            /// </summary>
            E_CCM2,

            /// <summary>
            /// Represents PDU C1
            /// </summary>
            E_PDU_C1,

            /// <summary>
            /// Represents the last node.
            /// Must remain last.
            /// </summary>
            E_LAST,         
        }

I would like to initialize a generic list like this:

// Should initialize to a capacity of 10
private List<Int32> transmitIndex = new List<Int32>((Int32)E_TTE_NODES.E_LAST);

Yes, I know I can just pass the number 10 as a parameter. The enum may add more nodes in the future, but E_LAST will always be the last node. My question is my does the compiler say I cannot cast my enum to an int on the above line of code. Isn’t the default value of a enum value an integer?

Answer 1

You can cast an enum type as you have to an int, the problem is probably somewhere else.

This would produce the compiling error you said:

 private List<Int32> transmitIndex = new List<Int32>(E_TTE_NODES.E_LAST);

This would not:

 private List<Int32> transmitIndex = new List<Int32>((Int32)E_TTE_NODES.E_LAST);