Windows Phone Developers

Saturday, May 14, 2011

Select Case Statement in C# / C-sharp

Switch Case Statement in C# (.NET)

Here is an example of Select Case like construct using C#:

private string ShirtSizes(int ShirtSize)
        {
            switch (ShirtSize)
            {
                case 36:
                    return "Small";
                case 38:
                    return "Medium";
                case 40:
                    return "Large";
                case 42:
                    return "Extra Large";
                case 44:
                    return "XXL";
                default:
                    return "Free Size";
             }

        }

Fall-Thru in Switch Case Statement in C#(Csharp)

Fall through can be achieved as follows:

switch (ShirtSize)
            {
                case 34:
                case 35:
                case 36:
                    return "Small";
                case 38:
                    return "Medium";
... 

The Switch construct requires jump statements like GoTo or Break to transfer control outside the loop. Else it will throw an Error Control cannot fall through from one case label ### to another

To avoid this use break / goto statements. On the other hand if you use more than one jump statement for a case - like the one shown below - you will get Unreachable code detected warning

case 38:
                    return "Medium";
                    break;
             
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