c# - 使用c#获取两个不同对象的公共(public)属性

Question

我需要从两个不同类的对象中获取公共(public)属性(即具有相同名称的.properties)到一个数组中。但我无法在 Join 附近提供正确的语法。这是我的代码。请帮忙

        PropertyInfo[] objAllProps = SourceInstance.GetType().GetProperties();
        PropertyInfo[] objAllProps_Target = TargetInstance.GetType().GetProperties();

        PropertyInfo[] CommonProperties = 
              from allprops in objAllProps join 
                   allprop_target in objAllProps_Target on 
                       allprops.Name.Equals(allprop_target)
            select new PropertyInfo[] {
                       allprop_target,
                   }
            .ToArray<PropertyInfo>();

Answer 1

我建议使用不同 集合类型 HashSet<string>而不是 PropertyInfo[] :

   HashSet<string> NamesToFind = new HashSet<string>(SourceInstance
     .GetType()
     .GetProperties()
     .Select(property => property.Name));

   // Common properties: properties of TargetInstance such that
   // there's a property of SourceInstance with the same name
   PropertyInfo[] CommonProperties = TargetInstance
     .GetType()
     .GetProperties()
     .Where(property => NamesToFind.Contains(property.Name))
     .ToArray();