按要求编写一个复杂的事件程序：

    A．在名空间中添加类MultiStepActionCoordinatorComplexEvent，并按注释添加语句：

            //声明名为OnMultiStepActionCoordinatorHandler的直接公开的委托，无返回值，参数为：object类型的sender和MultiStepActionCoordinatorEventArgs类型的e

            public class      //定义继承于EventArgs的类MultiStepActionCoordinatorEventArgs

            {

                //类中有两个字段：一个是Int32类型，另一个是DayOfWeek类型

                //还有一个双参数的构造函数，方便对字段赋值

            }

            public class MultiStepActionCoordinatorComplexEvent

            {

                // 添加类型为OnMultiStepActionCoordinatorHandler的事件公共字段MHandler

                // 编写触发事件方法OnMultiStepActionCoordinatorEvent，单MultiStepActionCoordinatorEventArgs类型参数e，负责触发委托事件方法

            }

    B．在名空间中添加下列类：

            public static class StringTransformer

            {

                public static string TransformTo32Chars(this string input, string key = "your-secret-key")

                {

                    using (var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(key)))

                    {

                        byte[] hashBytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(input));

                        string hashInHex = BitConverter.ToString(hashBytes).Replace("-", "");

                        return hashInHex.Substring(0, 32);

                    }

                }

            }

            public class EventAnalyzer

            {

                public static string AnalyzeEvents(MultiStepActionCoordinatorComplexEvent obj)

                {

                    StringBuilder result = new StringBuilder();

                    var events = obj.GetType().GetEvents(BindingFlags.Public | BindingFlags.Instance);

                    foreach (var ev in events)

                    {

                        result.Append($"Event Name: {ev.Name}\n");

                        var eventType = ev.EventHandlerType;

                        result.Append($"Event Delegate Type: {eventType.Name}\n");

                        result.Append($"Event Subscription Illustration:\n");

                        result.Append(string.Join("\n", InspectEventHandlers(obj)));

                    }

                    return result.ToString().TransformTo32Chars();

                }

                public static List < string >  InspectEventHandlers(MultiStepActionCoordinatorComplexEvent obj)

                {

                    List < string >  result = new List < string > ();

                    FieldInfo eventField = obj.GetType().GetField("MHandler", BindingFlags.Instance | BindingFlags.NonPublic);

                    if (eventField != null)

                    {

                        Delegate currentDelegate = eventField.GetValue(obj) as Delegate;

                        if (currentDelegate != null)

                        {

                            MethodInfo[] methods = currentDelegate.GetInvocationList().Select(d = >  d.Method).ToArray();

                            foreach (MethodInfo method in methods)

                            {

                                result.Add(MethodSignatureToString(method));

                            }

                        }

                        else

                            result.Append("No event handling methods registered.\n");

                    }

                    else

                        result.Append("Unable to retrieve the event field.\n");

                    return result;

                }

                private static string MethodSignatureToString(MethodInfo method)

                {

                    string parameters = String.Join(", ", method.GetParameters().Select(p = >  p.ParameterType.Name + " " + p.Name));

                    return $"{method.ReturnType.Name} {method.Name}({parameters})";

                }

            }

    C．在Program类内定义如下表的5个用于委托订阅的方法，每个方法用两个参数：一个是object类型的sender，另一个是MultiStepActionCoordinatorEventArgs类型的e，方法执行输出下表中的对应文字、sender.GetType().Name、e中的两个字段，中间用等号分隔：

    D．在Program类中Main方法添加如下代码：

            //模仿下列注释写好Main方法的执行语句

            //var fe = new ConveyRealTimeUpdateComplexEvent();

            // 如同下法订阅5个事件过程

            //fe.CHandler += new OnConveyRealTimeUpdateHandler(ArcticTundraMigratorySongbird);

            //ConveyRealTimeUpdateEventArgs args = new ConveyRealTimeUpdateEventArgs(45, Saturday);

            //fe.OnConveyRealTimeUpdateEvent(args);

            Console.WriteLine(EventAnalyzer.AnalyzeEvents(fe));

            Console.ReadLine();

运行程序，返回结果为：    1    

根据以下信息创建一个clsSportsMatch类和一个strucSportsMatch结构，它们包含4个字段，分别为：

    A．int类型的公共字段MatchID、decimal类型的公共字段Attendance、float类型的公共字段HomeTeamScore、double类型的公共字段AwayTeamScore；

    B．包含一个构造函数用于给个字段赋值；

模仿下列例子，写出自己的clsSportsMatch类和strucSportsMatch结构：

    // 新的类实例：clsEmployee

    public class clsEmployee

    {

        // 公共字段

        public string EmployeeID;

        public string FirstName;

        public string LastName;

        public DateTime HireDate;

        public decimal AnnualSalary;

        // 构造函数

        public clsEmployee(string employeeid, string firstName, string lastname, DateTime hiredate, decimal annualsalary)

        {

            this.EmployeeID = employeeid;

            this.FirstName = firstname;

            this.LastName = lastname;

            this.HireDate = hiredate;

            this.AnnualSalary = annualsalary;

        }

        public override string ToString()

        {

            return $"{EmployeeID},{FirstName},{LastName},{HireDate},{AnnualSalary}";

        }

    }

    // 新的结构体实例：strucEmployee

    public struct strucEmployee

    {

        // 公共字段

        public string EmployeeID;

        public string FirstName;

        public string LastName;

        public DateTime HireDate;

        public decimal AnnualSalary;

        // 构造函数

        public strucEmployee(string employeeid, string firstName, string lastname, DateTime hiredate, decimal annualsalary)

        {

            this.EmployeeID = employeeid;

            this.FirstName = firstname;

            this.LastName = lastname;

            this.HireDate = hiredate;

            this.AnnualSalary = annualsalary;

        }

        public override string ToString()

        {

            return $"{EmployeeID},{FirstName},{LastName},{HireDate},{AnnualSalary}";

        }

    }

clsSportsMatch类的代码：    1    （答案不需要注释语句）

strucSportsMatch结构的代码：    2    （答案不需要注释语句）

在Main方法中写入以下语句，并将运行结果填入    3    

            var p4 = new strucSportsMatch(3, 46, 96, 86);

            var p1 = new clsSportsMatch(3, 46, 96, 86);

            var p3 = p4;

            var p2 = p1;

            Console.WriteLine(p3);

            Console.WriteLine(p2);

            p3.MatchID = 24;

            p2.MatchID = 24;

            Console.WriteLine(p1);

            Console.WriteLine(p2);

            Console.WriteLine(p3);

            Console.WriteLine(p4);

请按以下要求编写接口程序，并使用表达式体实现MainClass的多重继承：

    A．编写接口IGenerateDailyStatisticsSummary，接口包含1个属性：属性1为DateTime类型的只写属性date；

    B．编写接口ICompressDirectoryContents，接口包含2个属性：属性1为string类型的只读属性sourceDirPath、属性2为string类型的可读可写属性compressedArchivePath；

新增一个MainClass类，继承以上所有的接口，并实现所有接口中的方法为公共方法，属性的表达式体设置方法如下：

    interface kkk

    {

        string KSDL { set; get; }              //标准答案为set在前get在后

    }

    class MyObject:kkk

    {

        private string _ksdl;

        public string KSDL

        {

            set = >  _ksdl = value;              //标准答案为set在前get在后

            get = >  _ksdl;                      //别颠倒

        }

    }

编写实现代码填入    1    

按要求编写一个简单的委托程序：

    A．在名空间中添加类DisplayOnScreenMessageWithMethods，并按注释添加语句：

            public class DisplayOnScreenMessageWithMethods

            {

                // 声明名为DisplayOnScreenMessage，返回值为字符串类型，参数也为字符串类型的委托

                // 编写方法DoOperation

            }

    B．在类DisplayOnScreenMessageWithMethods内定义如下表的5个用于委托的方法：

    C．在名空间中添加下列类：

            public static class StringTransformer

            {

                public static string TransformTo32Chars(this string input, string key = "your-secret-key")

                {

                    using (var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(key)))

                    {

                        byte[] hashBytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(input));

                        string hashInHex = BitConverter.ToString(hashBytes).Replace("-", "");

                        return hashInHex.Substring(0, 32);

                    }

                }

            }

            public class MethodAnalyzer

            {

                public static (bool Exists, string MethodSignature) AnalyzeMethod(string methodName, Type targetType)

                {

                    var method = targetType.GetMethod(methodName, BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance);

                    if (method == null) return (false, null);

                    string accessModifier = method.IsPublic ? "public" : "private";

                    string returnType = method.ReturnType.Name;

                    var parameterInfos = method.GetParameters();

                    var parametersWithDelegateDetails = parameterInfos.Select(pi = >

                        pi.ParameterType.IsSubclassOf(typeof(Delegate)) ?

                            $"{pi.ParameterType.Name}({string.Join(", ", pi.ParameterType.GetMethod("Invoke").GetParameters().Select(p = >  p.ParameterType.Name))})" :

                            pi.ParameterType.Name

                    );

                    string methodNameWithParams = $"{method.Name}({string.Join(", ", parametersWithDelegateDetails)})";

                    return (true, $"{accessModifier} {returnType} {methodNameWithParams}");

                }

            }

    D．在Program中添加一个方法和字段：

            private static readonly int[] SequenceOrder = Base64StringToIntArray("AAAAAAAAAAACAAAAAwAAAAIAAAACAAAAAwAAAAQAAAACAAAAAgAAAAQAAAABAAAAAwAAAAAAAAACAAAAAwAAAAQAAAAAAAAAAgAAAAAAAAA=");

            public static int[] Base64StringToIntArray(string base64String)

            {

                byte[] byteArray = Convert.FromBase64String(base64String);

                int[] integerArray = ByteArrayToIntArray(byteArray);

                return integerArray;

            }

            private static int[] ByteArrayToIntArray(byte[] byteArray)

            {

                int[] integerArray = new int[(byteArray.Length / sizeof(int))];

                Buffer.BlockCopy(byteArray, 0, integerArray, 0, byteArray.Length);

                return integerArray;

            }

    E．在Program类中Main方法添加如下代码：

var result = MethodAnalyzer.AnalyzeMethod("DoOperation", typeof(DisplayOnScreenMessageWithMethods));

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Silent (no audible sound, but may cause ripples in underground water sources)", DisplayOnScreenMessageWithMethods.SubterraneanHeatResistantCrustacean)} - {"Silent (no audible sound, but may cause ripples in underground water sources)SubterraneanHeatResistantCrustacean".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Silent (no audible sound, but may cause ripples in underground water sources)", DisplayOnScreenMessageWithMethods.SubterraneanHeatResistantCrustacean)} - {"Silent (no audible sound, but may cause ripples in underground water sources)SubterraneanHeatResistantCrustacean".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Soft tapping sounds (as they move across the snow surface)", DisplayOnScreenMessageWithMethods.ArcticSurfaceForagingArthropod)} - {"Soft tapping sounds (as they move across the snow surface)ArcticSurfaceForagingArthropod".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Soft tapping sounds (as they move across the snow surface)", DisplayOnScreenMessageWithMethods.ArcticSurfaceForagingArthropod)} - {"Soft tapping sounds (as they move across the snow surface)ArcticSurfaceForagingArthropod".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Electric crackling sounds (when producing electric shocks)", DisplayOnScreenMessageWithMethods.UnderwaterElectricGenerator)} - {"Electric crackling sounds (when producing electric shocks)UnderwaterElectricGenerator".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Electric crackling sounds (when producing electric shocks)", DisplayOnScreenMessageWithMethods.UnderwaterElectricGenerator)} - {"Electric crackling sounds (when producing electric shocks)UnderwaterElectricGenerator".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Soft glowing pulses (bioluminescent display)", DisplayOnScreenMessageWithMethods.MarineIlluminatingJellyfish)} - {"Soft glowing pulses (bioluminescent display)MarineIlluminatingJellyfish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Soft tapping sounds (as they move across the snow surface)", DisplayOnScreenMessageWithMethods.ArcticSurfaceForagingArthropod)} - {"Soft tapping sounds (as they move across the snow surface)ArcticSurfaceForagingArthropod".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Silent (no audible sound, but may cause ripples in underground water sources)", DisplayOnScreenMessageWithMethods.SubterraneanHeatResistantCrustacean)} - {"Silent (no audible sound, but may cause ripples in underground water sources)SubterraneanHeatResistantCrustacean".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Soft tapping sounds (as they move across the snow surface)", DisplayOnScreenMessageWithMethods.ArcticSurfaceForagingArthropod)} - {"Soft tapping sounds (as they move across the snow surface)ArcticSurfaceForagingArthropod".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Electric crackling sounds (when producing electric shocks)", DisplayOnScreenMessageWithMethods.UnderwaterElectricGenerator)} - {"Electric crackling sounds (when producing electric shocks)UnderwaterElectricGenerator".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Silent (no audible sound, but may cause ripples in underground water sources)", DisplayOnScreenMessageWithMethods.SubterraneanHeatResistantCrustacean)} - {"Silent (no audible sound, but may cause ripples in underground water sources)SubterraneanHeatResistantCrustacean".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Mild clicking sounds (during feeding)", DisplayOnScreenMessageWithMethods.UnderwaterSpongeFeedingFish)} - {"Mild clicking sounds (during feeding)UnderwaterSpongeFeedingFish".TransformTo32Chars(result.MethodSignature)}");

Console.WriteLine($"{DisplayOnScreenMessageWithMethods.DoOperation("Silent (no audible sound, but may cause ripples in underground water sources)", DisplayOnScreenMessageWithMethods.SubterraneanHeatResistantCrustacean)} - {"Silent (no audible sound, but may cause ripples in underground water sources)SubterraneanHeatResistantCrustacean".TransformTo32Chars(result.MethodSignature)}");

Console.ReadLine();

运行程序，返回结果为：    1    

按照下列要求完成程序编写：

    A．在名空间中编写继承下列接口ICopyable 的四个类：Department、Book、Assignment、Student，其中，ShallowCopy和DeepCopy分别是浅拷贝和深拷贝方法；

        public interface ICopyable < T >

        {

            T ShallowCopy();

            T DeepCopy();

        }

    B．在名空间中创建DynamicComposite类：

        public class DynamicComposite < T1, T2, T3, T4 >

        {

            public T1 Component1 { get; set; }

            public T2 Component2 { get; set; }

            public T3 Component3 { get; set; }

            public T4 Component4 { get; set; }

        }

    C．在Program类中添加下列方法：

public static string CompareObjects(object obj1, object obj2, string parentPath = "")

{

Type type = obj1.GetType();

PropertyInfo[] properties = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);

var differences = new List < string > ();

foreach (var prop in properties)

{

var path = string.IsNullOrEmpty(parentPath) ? prop.Name : $"{parentPath}.{prop.Name}";

var value1 = prop.GetValue(obj1);

var value2 = prop.GetValue(obj2);

if (value1 == null && value2 == null)

continue;

else if (value1 == null || value2 == null)

differences.Add($"Path '{path}' differs - Obj1: '{value1}', Obj2: '{value2}'");

else if (value1.GetType() == typeof(string) && value2.GetType() == typeof(string))

{

string str1 = (string)value1;

string str2 = (string)value2;

if (str1 != str2)

differences.Add($"Path '{path}' differs - Obj1: '{str1}', Obj2: '{str2}'");

}

else if (value1.GetType().IsClass && value2.GetType().IsClass)

{

string nestedDiff = CompareObjects(value1, value2, path);

if (!string.IsNullOrEmpty(nestedDiff))

{

differences.Add(nestedDiff);

}

}

else if (!object.Equals(value1, value2))

differences.Add($"Path '{path}' differs - Obj1: '{value1}', Obj2: '{value2}'");

}

if (differences.Any())

return string.Join("\n", differences);

else

return string.IsNullOrEmpty(parentPath) ? $"The {type.Name} objects are identical." : $"The {type.Name} objects at path '{parentPath}' are identical.";

}

public static string GenerateTypeStructureString(Type type)

{

StringBuilder outputBuilder = new StringBuilder();

HashSet < Type >  processedTypes = new HashSet < Type > ();

Queue < Type >  typesToProcess = new Queue < Type > ();

typesToProcess.Enqueue(type);

while (typesToProcess.Any())

{

Type currentType = typesToProcess.Dequeue();

if (processedTypes.Contains(currentType)) continue;

processedTypes.Add(currentType);

if (currentType.IsGenericType && !currentType.IsGenericTypeDefinition)

{

string genericTypeName = $"{currentType.Name.Split('`')[0]}  <  {string.Join(", ", currentType.GetGenericArguments().Select(a = >  a.Name))}  >  ";

outputBuilder.Append($"类（Class）：{genericTypeName}\n");

}

else

outputBuilder.Append($"类（Class）：{currentType.Name.TrimStart('`')}\n");

AppendMembers(outputBuilder, currentType, "属性（Properties）：", currentType.GetProperties(BindingFlags.Public | BindingFlags.Instance));

AppendMembers(outputBuilder, currentType, "字段（Fields）：", currentType.GetFields(BindingFlags.Public | BindingFlags.Instance));

AppendMembers(outputBuilder, currentType, "方法（Methods）：", currentType.GetMethods(BindingFlags.Public | BindingFlags.Instance));

foreach (var prop in currentType.GetProperties(BindingFlags.Public | BindingFlags.Instance))

ProcessPropertyOrParameterType(prop.PropertyType, typesToProcess, processedTypes);

foreach (var method in currentType.GetMethods(BindingFlags.Public | BindingFlags.Instance))

foreach (var parameter in method.GetParameters())

ProcessPropertyOrParameterType(parameter.ParameterType, typesToProcess, processedTypes);

}

return outputBuilder.ToString();

}

private static void ProcessPropertyOrParameterType(Type type, Queue < Type >  typesToProcess, HashSet < Type >  processedTypes)

{

if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(List <  > ))

{

Type elementType = type.GetGenericArguments()[0];

if (!IsBuiltInType(elementType) && !processedTypes.Contains(elementType))

typesToProcess.Enqueue(elementType);

}

else if (!IsBuiltInType(type) && !processedTypes.Contains(type))

typesToProcess.Enqueue(type);

}

private static bool IsBuiltInType(Type type) = >  type.IsPrimitive || type.IsArray || type.IsAssignableFrom(typeof(Delegate)) || type.IsAssignableFrom(typeof(Enum)) || type.Namespace == "System" || type.Namespace.StartsWith("System.", StringComparison.Ordinal);

private static bool IsBuiltInMethod(MethodInfo methodInfo) = >  methodInfo.IsSpecialName || methodInfo.DeclaringType == typeof(object);

private static void AppendMembers(StringBuilder outputBuilder, Type type, string memberTypeTitle, MemberInfo[] members)

{

if (members.Length  >  0)

{

outputBuilder.Append($"{new string('\t', 1)}{memberTypeTitle}:\n");

foreach (var member in members)

{

string memberInfo;

if (member is PropertyInfo propertyInfo)

{

string typeName = GetReadableTypeName(propertyInfo.PropertyType);

memberInfo = $"{typeName} {propertyInfo.Name}";

outputBuilder.Append($"{new string('\t', 2)}-{memberInfo}\n");

}

else if (member is FieldInfo fieldInfo)

{

string typeName = GetReadableTypeName(fieldInfo.FieldType);

memberInfo = $"{typeName} {fieldInfo.Name}";

outputBuilder.Append($"{new string('\t', 2)}-{memberInfo}\n");

}

else if (member is MethodInfo methodInfo && !IsBuiltInMethod(methodInfo))

{

string returnType = GetReadableTypeName(methodInfo.ReturnType);

string methodName = methodInfo.Name;

string parametersStr = String.Join(", ", methodInfo.GetParameters().Select(p = >

GetReadableTypeName(p.ParameterType) + " " + p.Name));

memberInfo = $"{returnType} {methodName}({parametersStr})";

outputBuilder.Append($"{new string('\t', 2)}-{memberInfo}\n");

}

else

continue;

}

}

}

private static string GetReadableTypeName(Type type)

{

if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(List <  > ))

{

Type genericArg = type.GetGenericArguments()[0];

return $"List < {GetReadableTypeName(genericArg)} > ";

}

else if (type.IsArray)

return $"{GetReadableTypeName(type.GetElementType())}[]";

else

return type.Name;

}

    D．在名空间中，添加如下类：

        public static class StringTransformer

        {

            public static string TransformTo32Chars(this string input, string key = "your-secret-key")

            {

                using (var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(key)))

                {

                    byte[] hashBytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(input));

                    string hashInHex = BitConverter.ToString(hashBytes).Replace("-", "");

                    return hashInHex.Substring(0, 32);

                }

            }

        }

    E．在Program类中的Main方法中，添加如下代码：

Console.WriteLine("Deep copied properties: Component1, Component4. Shallow copied properties: Component2, Component3.");

//按以下信息定义第一个DynamicComposite实例并给实例composite1赋值：

//DynamicComposite`4 = new DynamicComposite`4{Component1 = Department = new Department{DeptName = '08X8abQfoc', Building = 'TuoT04LA7s'}, Component2 = Book = new Book{Title = 'V1j46IJm5T', Author = 'oqWRCTDbKQ'}, Component3 = Assignment = new Assignment{Title = '8qHHc7iBUV', DueDate = DateTime.Now}, Component4 = Student = new Student{StudentId = 'SAhV9YcBSR', Name = 'okVxnYWQg0'}}

//定义第二个DynamicComposite实例composite2，四个属性分别为：composite1对象的Component2, Component3属性使用浅拷贝，composite1对象的Component1、Component4属性使用深拷贝

//把composite1对象Component2属性下的Title属性值修改成u0rtotbb9j

Console.WriteLine("Randomly selected inner property of Book: Title.

Successfully assigned 'u0rtotbb9j' to the property 'Title'.");

//使用CompareObjects方法比较两个DynamicComposite实例，并输出返回值

//把composite1对象Component3属性下的Title属性值修改成HRjAWqy6D4

Console.WriteLine("Randomly selected inner property of Assignment: Title.

Successfully assigned 'HRjAWqy6D4' to the property 'Title'.");

//使用CompareObjects方法比较两个DynamicComposite实例，并输出返回值

            Console.WriteLine($"Key: {GenerateTypeStructureString(composite1.GetType()).Replace(" ", "").TransformTo32Chars("u0rtotbb9j")}");

根据下述步骤要求，编写表达式体编写构造函数和ToString()：

①选择Visual Studio工具栏中的“文件”->“新建”->“项目”命令，打开“新建项目”对话框；

②选择“控制台应用（.Net Framework）”

③输入任意项目名称，选择保存位置，确定完成创建；

④打开Program.cs文件，这里给出一个使用表达式体编写的类的模板，按以下要求编写代码：

class User

{

   private string Name;

   private string Occupation;

   public User(string name, string occupation) = >

       (this.Name, this.Occupation) = (name, occupation);

   public override string ToString() = >

       $"User {{ {this.Name} {this.Occupation} }}";

}

  A.增加一个台灯的类，类名为DeskLamp，该类DeskLamp中含有4个私有字段，字段名为LightSourceType、AdjustmentMethod、ColorTemperature、ColorRenderingIndex，请用单行命令定义所有的字段，该类含有4个整型参数的构造函数，参数变量分别为lightsourcetype、adjustmentmethod、colortemperature、colorrenderingindex，其功能是为4个字段分别赋值；同样该类需要重写ToString()方法，以“User { {this.Name} {this.Occupation} }”方式输出类名和所有的字段值，中间用空格间隔；请使用表达式体编写出类DeskLamp的代码并填入    1    ；

  B.增加一个空调的类，类名为AirConditioner，该类AirConditioner中含有4个私有字段，字段名为Capacity、EnergyEfficiencyRating、CoolingCapacity、HeatingCapacity，请用单行命令定义所有的字段，该类含有4个整型参数的构造函数，参数变量分别为capacity、energyefficiencyrating、coolingcapacity、heatingcapacity，其功能是为4个字段分别赋值；同样该类需要重写ToString()方法，以“User { {this.Name} {this.Occupation} }”方式输出类名和所有的字段值，中间用空格间隔；请使用表达式体编写出类AirConditioner的代码并填入    2    ；

  C.模仿User类编写一个Community类，添加4个字段，分别是字符串类型字段Name、Occupation，DeskLamp类型字段desklamp，AirConditioner类型字段airconditioner，每个字段单独一行命令定义，该类含有4个整型参数的构造函数，参数变量分别为name、occupation、desklamp、airconditioner，其功能是为4个字段分别赋值；同样该类需要重写ToString()方法，以“User { {this.Name} {this.Occupation} }”方式输出类名和所有的字段值，中间用空格间隔；请使用表达式体编写出类Community的代码并填入    3    ；

⑤Program.cs文件中的Main方法中，按以下要求编写代码：

//使用表达式体对Community类的实例community进行实例化；

//其中，Name的值是佟信的大写全拼，Occupation=Roofer

//DeskLamp实例属性：LightSourceType, AdjustmentMethod, ColorTemperature, ColorRenderingIndex，分别赋值4, 9, 8, 6

//AirConditioner实例属性：Capacity, EnergyEfficiencyRating, CoolingCapacity, HeatingCapacity，分别赋值4, 3, 2, 8

    var community =     4     ;   //请用非表达式体书写命令行

    Console.WriteLine($"{Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes($"{community}"))}");

⑥运行该程序。

请问该程序运行结果为    5    。

根据下述步骤要求，编写对象初始化和重写ToString()：

①选择Visual Studio工具栏中的“文件”->“新建”->“项目”命令，打开“新建项目”对话框；

②选择“控制台应用（.Net Framework）”

③输入任意项目名称，选择保存位置，确定完成创建；

④打开Program.cs文件，按以下要求编写代码：

  A.增加一个电饭煲的类，类名为：RiceCooker，添加4个字段，字段名为Capacity、InnerPotMaterial、Function、ControlMethod；

  B.增加一个书柜的类，类名为：Bookcase，添加4个字段，字段名为Material、Size、NumberofShelves、Style；

  C.增加一个Father类，添加4个字段，分别是字符串类型字段Name、Job，RiceCooker类型字段ricecooker，（属性：Capacity = 39，InnerPotMaterial = 31，Function = 35，ControlMethod = 48），Bookcase类型字段bookcase，（属性：Material = 25，Size = 10，NumberofShelves = 24，Style = 15）；

  D.重写Father类的ToString()方法，使它返回$"{Name},{Job},{ricecooker.Capacity},{ricecooker.InnerPotMaterial},{ricecooker.Function},{ricecooker.ControlMethod},{bookcase.Material},{bookcase.Size},{bookcase.NumberofShelves},{bookcase.Style}"；

⑤Program.cs文件中的Main方法中，按以下要求编写代码：

//以单行语句对Father类的实例father进行实例化；

//其中：Name的值是岳福昭的大写全拼，Occupation=Optician，RiceCooker类型字段ricecooker，（属性：Capacity = 39，InnerPotMaterial = 31，Function = 35，ControlMethod = 48），Bookcase类型字段bookcase，（属性：Material = 25，Size = 10，NumberofShelves = 24，Style = 15），

        1    

    Console.WriteLine($"{Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes($"{father}"))}");

⑥运行该程序。

请问该程序运行结果为    2    。

按要求编写一个简单的委托程序：

    A．声明名为RenderMessageBoxText无返回值无参数的委托；

    B．定义5个匿名委托的方法，方法输出下列表格中的输出文字，如下表：

    C．在Program中添加一个方法和字段：

            private static readonly int[] OrderArray = Base64StringToIntArray("AQAAAAIAAAAAAAAAAwAAAAQAAAA=");

            private static readonly int[] SequenceOrder = Base64StringToIntArray("AAAAAAAAAAAAAAAAAgAAAAQAAAABAAAAAwAAAAAAAAADAAAABAAAAAAAAAACAAAAAgAAAAAAAAAEAAAAAAAAAAAAAAAEAAAAAwAAAAEAAAA=");

            ////////////////////////////

            // 此处需要定义匿名委托 //

            ////////////////////////////

            private static readonly RenderMessageBoxText[] rendermessageboxtexts = { ArcticAuroraBorealisInspiredBird, DesertDuneCarnivorousPlant, HighAltitudeAerialPredatorBird, TropicalRainforestCanopyGliderMarsupial, TerrestrialReptilianHerbivore };

            public static void ExecuteBellsBySequence()

            {

                foreach (int index in SequenceOrder)

                    rendermessageboxtexts[index]();

            }

            public static string GetBellActionNamesInOrderAsString()

            {

                Type thisType = typeof(Program);

                FieldInfo[] fields = thisType.GetFields(BindingFlags.Public | BindingFlags.Static);

                var bellActionsWithIndexes = fields

                    .Where(field = >  field.FieldType == typeof(RenderMessageBoxText))

                    .Select((field, index) = >  (Name: field.Name, Index: index))

                    .ToDictionary(pair = >  pair.Index, pair = >  pair.Name);

                var outputBuilder = new StringBuilder();

                foreach (int index in OrderArray)

                    if (bellActionsWithIndexes.ContainsKey(index))

                        outputBuilder.AppendLine(bellActionsWithIndexes[index]);

                    else

                        outputBuilder.AppendLine($"Warning: No BellAction found for the given order index {index}");

                return outputBuilder.ToString();

            }

            public static int[] Base64StringToIntArray(string base64String)

            {

                byte[] byteArray = Convert.FromBase64String(base64String);

                int[] integerArray = ByteArrayToIntArray(byteArray);

                return integerArray;

            }

            private static int[] ByteArrayToIntArray(byte[] byteArray)

            {

                int[] integerArray = new int[(byteArray.Length / sizeof(int))];

                Buffer.BlockCopy(byteArray, 0, integerArray, 0, byteArray.Length);

                return integerArray;

            }

    D．在Program类中Main方法添加如下代码：

            ExecuteBellsBySequence();

            string orderedBellActionNames = GetBellActionNamesInOrderAsString();

            Console.WriteLine(orderedBellActionNames);

            Console.ReadLine();

运行程序，返回结果为：    1    

设计一个基类Animal，其中包含两个string类型属性：ChineseName和EnglishName，用于输入属性值的构造函数，另外有一个虚方法Show()，解决输出问题，另外创建一个类Featrue：

    // 定义动物项类 (Animal)

    public class Animal

    {

        // 中文名称属性

        string ChineseName { get; set; }

        // 英文名称属性

        string EnglishName { get; set; }

        // 构造函数，初始化动物项时设置中文名、英文名及特点

        public Animal(string chineseName, string englishName)

        {

            ChineseName = chineseName;

            EnglishName = englishName;

        }

        public virtual void Show()

        {

            Console.WriteLine($"中文名：{ChineseName}");

            Console.WriteLine($"英文名：{EnglishName}");

        }

    }

创建两个类ElectricEel和BrushtailedPossum，分别定义动物电鳗和帚尾袋貂的类，其中中文名和英文名继承自基类Animal，它们都有一个Feature类型的属性Characteristics，用于描述动物电鳗和帚尾袋貂的特点，这其中Feature类的定义如下：

    public class Feature

    {

        public string[] UniqueTraits { get; set; }

        public Feature(params string[] uniqueTraits)

        {

            UniqueTraits = uniqueTraits;

        }

    }

Main方法的代码如下：

            ElectricEel electriceel = new ElectricEel("电鳗", "ElectricEel", "亚马逊流域的淡水鱼，能产生强烈电流", "身体细长，能连续释放电压高达600伏特的电击", "肉食性，以鱼类、水生无脊椎动物为食");

            BrushtailedPossum brushtailedpossum = new BrushtailedPossum("帚尾袋貂", "BrushtailedPossum", "澳大利亚特有的有袋类哺乳动物", "善于攀爬，拥有长而浓密的尾巴", "夜间活动，主要以树叶、果实、花蜜和昆虫为食");

            electriceel.Show();

            brushtailedpossum.Show();

            Console.ReadLine();

请把你定义的ElectricEel类，写在    1    内，BrushtailedPossum类，写在    2    内，类中有一个Feature类型的属性Characteristics，构造函数中需要添加一个特点uniqueTraits的参数，类型为params string[]，同时在基类输出的基础上增加一个特点的输出，如：特点：特点1, 特点2, 特点3；

运行程序，运行结果为：    3