C\#에서 어떤 유형 이 암시 적 형식 으로 전환 할 수 있 는 지 판단 합 니 다.

     static private bool CanConvert(Type from, Type to)    
    {           
       if (from.IsPrimitive && to.IsPrimitive)  
          {               
   TypeCode typeCodeFrom = Type.GetTypeCode(from);    
   TypeCode typeCodeTo = Type.GetTypeCode(to);       
   if (typeCodeFrom == typeCodeTo)             
   return true;               
   if (typeCodeFrom == TypeCode.Char)    
   switch (typeCodeTo)          
   {                    
   case TypeCode.UInt16: return true;     
   case TypeCode.UInt32: return true;      
   case TypeCode.Int32: return true;         
   case TypeCode.UInt64: return true;            
   case TypeCode.Int64: return true;                
   case TypeCode.Single: return true;               
   case TypeCode.Double: return true;                   
   default: return false;                
   }               
   // Possible conversions from Byte follow.       
   if (typeCodeFrom == TypeCode.Byte)     
   switch (typeCodeTo)               
   {                       
   case TypeCode.Char: return true;       
   case TypeCode.UInt16: return true;          
   case TypeCode.Int16: return true;                    
   case TypeCode.UInt32: return true;                
   case TypeCode.Int32: return true;                       
   case TypeCode.UInt64: return true;                   
   case TypeCode.Int64: return true;           
   case TypeCode.Single: return true;       
   case TypeCode.Double: return true;    
   default: return false;                
   }                
   // Possible conversions from SByte follow.   
   if (typeCodeFrom == TypeCode.SByte)        
   switch (typeCodeTo)                   
   {                        
   case TypeCode.Int16: return true;     
   case TypeCode.Int32: return true;      
   case TypeCode.Int64: return true;             
   case TypeCode.Single: return true;              
   case TypeCode.Double: return true;                 
   default: return false;               
   }              
   // Possible conversions from UInt16 follow.     
   if (typeCodeFrom == TypeCode.UInt16)     
   switch (typeCodeTo)              
   {                     
   case TypeCode.UInt32: return true; 
   case TypeCode.Int32: return true;     
   case TypeCode.UInt64: return true;             
   case TypeCode.Int64: return true;                   
   case TypeCode.Single: return true;                
   case TypeCode.Double: return true;               
   default: return false;                  
   }               
   // Possible conversions from Int16 follow.           
   if (typeCodeFrom == TypeCode.Int16)           
   switch (typeCodeTo)                  
   {                      
   case TypeCode.Int32: return true;  
   case TypeCode.Int64: return true;           
   case TypeCode.Single: return true;         
   case TypeCode.Double: return true;             
   default: return false;               
   }               
   // Possible conversions from UInt32 follow.    
   if (typeCodeFrom == TypeCode.UInt32)         
   switch (typeCodeTo)                 
   {                      
   case TypeCode.UInt64: return true;         
   case TypeCode.Int64: return true;        
   case TypeCode.Single: return true;      
   case TypeCode.Double: return true;    
   default: return false;             
   }               
   // Possible conversions from Int32 follow.         
   if (typeCodeFrom == TypeCode.Int32)             
   switch (typeCodeTo)                 
   {                       
   case TypeCode.Int64: return true;    
   case TypeCode.Single: return true;  
   case TypeCode.Double: return true;       
   default: return false;                
   }           
   // Possible conversions from UInt64 follow.       
   if (typeCodeFrom == TypeCode.UInt64)          
   switch (typeCodeTo)                   
   {                      
   case TypeCode.Single: return true;     
   case TypeCode.Double: return true;        
   default: return false;                  
   }               
   // Possible conversions from Int64 follow.       
   if (typeCodeFrom == TypeCode.Int64)         
   switch (typeCodeTo)                
   {                        
   case TypeCode.Single: return true;          
   case TypeCode.Double: return true;         
   default: return false;             
   }              
   // Possible conversions from Single follow.     
   if (typeCodeFrom == TypeCode.Single)    
   switch (typeCodeTo)                 
   {                     
   case TypeCode.Double: return true;     
   default: return false;             
   }         
   }        
   return false; 
   }