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Asked: 2026-05-11T03:06:44+00:00

Why does the compiler say a constant value is required for the first case…the

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Why does the compiler say ‘a constant value is required’ for the first case…the second case works fine… 

switch (definingGroup) {     case Properties.Settings.Default.OU_HomeOffice:           //do something           break;     case 'OU=Home Office':           //do something         break;     default:         break;  }

also tried…

switch (definingGroup) {     case Properties.Settings.Default.OU_HomeOffice.ToString():           //do something         break;     case 'OU=Home Office':         //do something         break;     default:         break;  }

…same error

Here’s the Properties.Setting code

[global::System.Configuration.ApplicationScopedSettingAttribute()] [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] [global::System.Configuration.DefaultSettingValueAttribute('OU=Home Office')] public string OU_HomeOffice {     get {         return ((string)(this['OU_HomeOffice']));     } }
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1 Answer

  1. Properties.Settings.Default.OU_HomeOffice isn’t a constant string – something known at compile time. The C# switch statement requires that every case is a compile-time constant.

    (Apart from anything else, that’s the only way it can know that there won’t be any duplicates.)

    See section 8.7.2 of the C# 3.0 spec for more details.

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