c＃ 反射之Type使用

c# 通过反射复制不同对象属性

    public static void CopyPropertiesTo<T, TU>(T source, TU dest)
    {
    
    	// PropertyInfo：类的成员字段
        var sourceProps = typeof(T).GetProperties().Where(x => x.CanRead).ToList();
        var destProps = typeof(TU).GetProperties()
            .Where(x => x.CanWrite)
            .ToList();

        foreach (var sourceProp in sourceProps)
        {
    
            if (destProps.Any(x => x.Name == sourceProp.Name))
            {
    
                var p = destProps.First(x => x.Name == sourceProp.Name);
                if (p.CanWrite)
                {
    
                    // check if the property can be set or no.
                    p.SetValue(dest, sourceProp.GetValue(source, null), null);
                }
            }
        }
    }

通过反射获取泛型对象的属性

public static HashEntry[] Bean2HashEntry<T>(T t)
    {
    
        Type type = typeof(T);
        PropertyInfo[] properties = type.GetProperties();
        HashEntry[] hashEntries = new HashEntry[properties.Length];

        //里面是所有公共属性
        int i = 0;
        Array.ForEach<PropertyInfo>(properties,
            filed =>
            {
    
                // t的属性值
                object? filedValue = filed.GetValue(t);
                // t的属性名
                object? filedName = filed.Name;
                
                var hashEntry = new HashEntry(new RedisValue(filed.Name),
                    new RedisValue(filed.GetValue(t)?.ToString() ?? string.Empty));
                hashEntries[i] = hashEntry;
                i++;
            });

        return hashEntries;
    }