从数据库动态生成enum类(示例)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | public TypeInfo GetBusinessUnitEnum() { // Create a dynamic assembly in the current application domain, // and allow it to be executed and saved to disk. AssemblyName assemblyName = new AssemblyName( nameof(CBOP.Service.Advertising)); AssemblyBuilder assBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndCollect); // Define a dynamic module in "TempAssembly" assembly. For a single- // module assembly, the module has the same name as the assembly. ModuleBuilder mb = assBuilder.DefineDynamicModule(nameof(CBOP.Service.Advertising)); // Define a public enumeration with the name "Elevation" and an // underlying type of Integer. EnumBuilder eb = mb.DefineEnum(nameof(CBOP.Service.Advertising)+ "BusinessUnitEnum" , TypeAttributes.Public, typeof ( int )); var targetEnum=_enumConfigRep.Where(_ => _.EnumType == _businessUnitIdForET); // Define two members, "High" and "Low". foreach ( var item in targetEnum) { eb.DefineLiteral(item.EnumValue,item.EnumId); } // Create the type and save the assembly. var finished = eb.CreateTypeInfo(); WriteEnum(finished); return finished; } private void WriteEnum(TypeInfo info) { var myEnum = Activator.CreateInstance(info); _loger.Info($ "{(info.IsPublic ? " public " : " private ")} {(info.IsEnum ? " enum " : " class ")} {info.Name}" ); _loger.Info( "{" ); var names = Enum.GetNames(info); int [] values = ( int [])Enum.GetValues(info); int i = 0; foreach ( var item in names) { _loger.Info($ " {item} = {values[i]}" ); i++; } _loger.Info( "}" ); } |
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