? reader.GetFieldType(i).ToString()
"System.Boolean"
? reader.GetFieldType(i)
{Name = "Boolean" FullName = "System.Boolean"}
    Assembly: {mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089}
    AssemblyQualifiedName: "System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
    Attributes: Public | SequentialLayout | Sealed | Serializable | BeforeFieldInit
    BaseType: {Name = "ValueType" FullName = "System.ValueType"}
    ContainsGenericParameters: false
    CustomAttributes: Count = 3
    DeclaredConstructors: {System.Reflection.ConstructorInfo[1]}
    DeclaredEvents: {System.Reflection.EventInfo[0]}
    DeclaredFields: {System.Reflection.FieldInfo[7]}
    DeclaredMembers: {System.Reflection.MemberInfo[34]}
    DeclaredMethods: {System.Reflection.MethodInfo[26]}
    DeclaredNestedTypes: {System.Reflection.TypeInfo.<get_DeclaredNestedTypes>d__23}
    DeclaredProperties: {System.Reflection.PropertyInfo[0]}
    DeclaringMethod: '((System.RuntimeType)(reader.GetFieldType(i))).DeclaringMethod' threw an exception of type 'System.InvalidOperationException'
    DeclaringType: null
    FullName: "System.Boolean"
    GUID: {c3008e12-9b16-36ec-b731-73257f25be7a}
    GenericParameterAttributes: '((System.RuntimeType)(reader.GetFieldType(i))).GenericParameterAttributes' threw an exception of type 'System.InvalidOperationException'
    GenericParameterPosition: '((System.RuntimeType)(reader.GetFieldType(i))).GenericParameterPosition' threw an exception of type 'System.InvalidOperationException'
    GenericTypeArguments: {System.Type[0]}
    GenericTypeParameters: {System.Type[0]}
    HasElementType: false
    ImplementedInterfaces: {System.Type[4]}
    IsAbstract: false
    IsAnsiClass: true
    IsArray: false
    IsAutoClass: false
    IsAutoLayout: false
    IsByRef: false
    IsCOMObject: false
    IsClass: false
    IsConstructedGenericType: false
    IsContextful: false
    IsEnum: false
    IsExplicitLayout: false
    IsGenericParameter: false
    IsGenericType: false
    IsGenericTypeDefinition: false
    IsImport: false
    IsInterface: false
    IsLayoutSequential: true
    IsMarshalByRef: false
    IsNested: false
    IsNestedAssembly: false
    IsNestedFamANDAssem: false
    IsNestedFamORAssem: false
    IsNestedFamily: false
    IsNestedPrivate: false
    IsNestedPublic: false
    IsNotPublic: false
    IsPointer: false
    IsPrimitive: true
    IsPublic: true
    IsSealed: true
    IsSecurityCritical: false
    IsSecuritySafeCritical: false
    IsSecurityTransparent: true
    IsSerializable: true
    IsSpecialName: false
    IsUnicodeClass: false
    IsValueType: true
    IsVisible: true
    MemberType: TypeInfo
    MetadataToken: 33554610
    Module (System.Reflection.MemberInfo): {CommonLanguageRuntimeLibrary}
    Module: {CommonLanguageRuntimeLibrary}
    Name: "Boolean"
    Namespace: "System"
    ReflectedType: null
    StructLayoutAttribute: {System.Runtime.InteropServices.StructLayoutAttribute}
    TypeHandle: {System.RuntimeTypeHandle}
    TypeInitializer: {Void .cctor()}
    UnderlyingSystemType: {Name = "Boolean" FullName = "System.Boolean"}
? reader.GetFieldType(i) == typeof(System.Boolean)
true