Question

Why does the following work (compile):

public void SaveCurrentTab(string currentTabIndex)
        {
            if (currentTabIndex == MainInfoPnl.ClientID)
                PartialSave1();
            else if (currentTabIndex == ContactInfoPnl.ClientID)
                PartialSave2();
            else if (currentTabIndex == BankInfoPnl.ClientID)
                PartialSave3();
            else if (currentTabIndex == ServicesPnl.ClientID)
                PartialSave4();
            else if (currentTabIndex == AttachmentsPnl.ClientID)
                PartialSave5();

        }

But, the following does not?

public void SaveCurrentTab(string currentTabIndex)
        {
            switch (currentTabIndex)
            {
                case MainInfoPnl.ClientID:
                    PartialSave1();
                    break;
                case ContactInfoPnl.ClientID:
                    PartialSave2();
                    break;
                case BankInfoPnl.ClientID:
                    PartialSave3();
                    break;
                case ServicesPnl.ClientID:
                    PartialSave4();
                    break;
                case AttachmentsPnl.ClientID:
                    PartialSave5();
                    break;
            }

        }

Answer 1

Presumably because MainInfoPnl.ClientID isn’t a compile-time constant. It may be public static readonly for example, which isn’t the same as const. If that doesn’t help, show us more about the code and the error message you’re getting.