• 返回对应对象的克隆方法


    代码
    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Collections;
    using System.Reflection;

    namespace Common.CloneObjBase
    {
        
    /// <summary>   
        
    /// BaseObject类是一个用来继承的抽象类。    
        
    /// 每一个由此类继承而来的类将自动支持克隆方法。   
        
    /// 该类实现了Icloneable接口,并且每个从该对象继承而来的对象都将同样地   
        
    /// 支持Icloneable接口。    
        
    /// </summary>    
        public abstract class CloneObj : ICloneable
        {
            
    /// <summary>
            
    /// Author:Evan Lee
            
    /// QQ:278631309
            
    /// Blog:http://www.cnblogs.com/magic_evan
            
    /// Email:Can't be Find
            
    /// </summary>
            
    /// <typeparam name="T">要返回的克隆对象;该对象须为class</typeparam>
            
    /// <param name="Tobj">要进行克隆的对象实例</param>
            
    /// <returns></returns>
            public T Clone<T>(T Tobj) where T : class
            {

                
    //首先我们建立指定类型的一个实例            
                object newObject = Activator.CreateInstance(typeof(T));
                
    //我们取得新的类型实例的字段数组。            
                FieldInfo[] fields = newObject.GetType().GetFields();
                
    int i = 0;
                
    foreach (FieldInfo fi in typeof(T).GetFields())
                {
                    
    //我们判断字段是否支持ICloneable接口。                
                    Type ICloneType = fi.FieldType.GetInterface("ICloneable"true);
                    
    if (ICloneType != null)
                    {
                        
    //取得对象的Icloneable接口。                    
                        ICloneable IClone = (ICloneable)fi.GetValue(Tobj);
                        
    //我们使用克隆方法给字段设定新值。                   
                        fields[i].SetValue(newObject, IClone.Clone());
                    }
                    
    else
                    {
                        
    // 如果该字段部支持Icloneable接口,直接设置即可。                    
                        fields[i].SetValue(newObject, fi.GetValue(Tobj));
                    }
                    
    //现在我们检查该对象是否支持IEnumerable接口,如果支持,                
                    
    //我们还需要枚举其所有项并检查他们是否支持IList 或 IDictionary 接口。               
                    Type IEnumerableType = fi.FieldType.GetInterface("IEnumerable"true);
                    
    if (IEnumerableType != null)
                    {
                        
    //取得该字段的IEnumerable接口                   
                        IEnumerable IEnum = (IEnumerable)fi.GetValue(Tobj);
                        Type IListType 
    = fields[i].FieldType.GetInterface("IList"true);
                        Type IDicType 
    = fields[i].FieldType.GetInterface("IDictionary"true);
                        
    int j = 0;
                        
    if (IListType != null)
                        {
                            
    //取得IList接口。                        
                            IList list = (IList)fields[i].GetValue(newObject);
                            
    foreach (object obj in IEnum)
                            {
                                
    //查看当前项是否支持支持ICloneable 接口。                            
                                ICloneType = obj.GetType().GetInterface("ICloneable"true);
                                
    if (ICloneType != null)
                                {
                                    
    //如果支持ICloneable 接口,             
                                    
    //我们用它李设置列表中的对象的克隆            
                                    ICloneable clone = (ICloneable)obj;
                                    list[j] 
    = clone.Clone();
                                }
                                
    //注意:如果列表中的项不支持ICloneable接口,那么                         
                                
    //在克隆列表的项将与原列表对应项相同                         
                                
    //(只要该类型是引用类型)                           
                                j++;
                            }
                        }
                        
    else if (IDicType != null)
                        {
                            
    //取得IDictionary 接口                       
                            IDictionary dic = (IDictionary)fields[i].GetValue(newObject);
                            j 
    = 0;
                            
    foreach (DictionaryEntry de in IEnum)
                            {
                                
    //查看当前项是否支持支持ICloneable 接口。                            
                                ICloneType = de.Value.GetType().
                                    GetInterface(
    "ICloneable"true);
                                
    if (ICloneType != null)
                                {
                                    ICloneable clone 
    = (ICloneable)de.Value;
                                    dic[de.Key] 
    = clone.Clone();
                                }
                                j
    ++;
                            }
                        }
                    }
                    i
    ++;
                }
                
    return newObject as T;
            }

            
    #region ICloneable 成员

            
    public object Clone()
            {
                
    return base.MemberwiseClone();
                
    //throw new Exception("The method or operation is not implemented.");
            }

            
    #endregion
        }
    }
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  • 原文地址:https://www.cnblogs.com/magic_evan/p/1718226.html
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