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Const declarations

I am making some code conversions from VB6 and VB.NET to C# and have run into a little problem. In VB6 and VB.NET, the code had const declarations like follows:

'// Base for MCI Control error codes
Const MCIERR_CONTROL_BASE As Integer = (MCIERR_CUSTOM_DRIVER_BASE + 100)

Const MCIERR_SETDRIVERDATA As Object = (MCIERR_CONTROL_BASE + 0)
Const MCIERR_GETDRIVERDATA As Object = (MCIERR_CONTROL_BASE + 1)
Const MCIERR_PSPCTRL_NODRIVER As Object = (MCIERR_CONTROL_BASE + 2)

When I make the same declarations in C#:

//// Base for MCI Control error codes
const int MCIERR_CONTROL_BASE = (MCIERR_CUSTOM_DRIVER_BASE + 100);

const object MCIERR_SETDRIVERDATA = (MCIERR_CONTROL_BASE + 0);
const object MCIERR_GETDRIVERDATA = (MCIERR_CONTROL_BASE + 1);
const object MCIERR_PSPCTRL_NODRIVER = (MCIERR_CONTROL_BASE + 2);

When I try to compile, I get an error stating "The expression being assigned to must be a constant". How I make the same declarations? I know I can use a string, but I want to make sure that there is no chance of the values getting changed.

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gregoryyoung

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sabeesh

You can define like this

const int MCIERR_CONTROL_BASE = (MCIERR_CUSTOM_DRIVER_BASE + 100);

const object MCIERR_SETDRIVERDATA = (MCIERR_CONTROL_BASE + 0);
const object MCIERR_GETDRIVERDATA = (MCIERR_CONTROL_BASE + 1);
const object MCIERR_PSPCTRL_NODRIVER = (MCIERR_CONTROL_BASE + 2);

gvector1

ASKER

Sabeesh,
That is what I have defined and am getting the error. As GregoryYoung posted, if I change the object declaration to int, it works fine.