在执行表达式时出现错误，有人可以在此处显示正确的语法吗？
=IIf(Fields!t_cpcp.Value ="310", "Purchased Material & Raw Material", Nothing) =IIf(Fields!t_cpcp.Value ="320", "Manufacturing Direct Labor", Nothing) =IIf(Fields!t_cpcp.Value ="325", "Subcontract Cost", Nothing) =IIf(Fields!t_cpcp.Value ="330", "Engineering Direct Labor", Nothing) =IIf(Fields!t_cpcp.Value ="340", "Manufacturing Labor O/H", Nothing) =IIf(Fields!t_cpcp.Value ="345", "Engineering Labor O/H", Nothing) =IIf(Fields!t_cpcp.Value ="350", "Material O/H", Nothing) =IIf(Fields!t_cpcp.Value ="355", "Labor O/H Surcharge", Nothing) =IIf(Fields!t_cpcp.Value ="360", "Subcontract Material Burden", Nothing) =IIf(Fields!t_cpcp.Value ="MFD", "Manufactured Items", Nothing)
如果要全部包含在一个表达式中，则可能要使用SWITCH语句：
=Switch(<condition>, <return value if true>, <next condition>, <return value if true>, ...)
switch语句将返回第一个条件为true的值，以您的示例为例，您可以尝试：
=Switch(Fields!t_cpcp.Value ="310", "Purchased Material & Raw Material", Fields!t_cpcp.Value ="320", "Manufacturing Direct Labor", Fields!t_cpcp.Value ="325", "Subcontract Cost", ...rest of them go here...)
