Can you help me C# switch case -

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i have code c# switch case

public void gdvdetail_customunboundcolumndata(object sender, devexpress.xtragrid.views.base.customcolumndataeventargs e) {     try     {         datarowview orow = (datarowview)(gdvdetail.getrow(e.listsourcerowindex));         switch (e.column.name)         {             case colquotaquantity.name:                 if (colquotaquantity.unboundexpression == "" && orow.row.table.columns.contains("quotaquantity"))                 {                     e.value = orow.row["quotaquantity"];                 }                 break;                 //e.value = orow.row("quantity")             case coldifferencequantity.name:                 if (orow.row.table.columns.contains("quotaquantity") && !information.isdbnull(orow.row["quotaquantity"]) && !information.isdbnull(orow.row["quantity"]))                 {                     e.value = system.convert.todouble(orow.row["quantity"]) - system.convert.todouble(orow.row["quotaquantity"]);                 }                 break;         }     }     catch (exception ex)     {         commonfunction.showexclamation(ex.message);     } }

when try compile application, receive following errors:

a constant value expected
line : case colquotaquantity.name:
line : case coldifferencequantity.name:

can me?

the values in switch/case statement have compile-time constants, numeric values or string literals:

switch(i) {     case 0: /*...*/ break;     case 1: /*...*/ break; }  switch(s) {     case "hello": /*...*/ break;     case "world": /*...*/ break; }

you cannot use variables value known @ run-time, not @ compile time. case coldifferencequantity.name: not valid in c#.

you convert code if statements:

if (e.column.name == colquotaquantity.name) {     /* ... */ } else if (e.column.name == coldifferencequantity.name)

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