C#通过属性名字符串获取、设置对象属性值操作示例

 public class User
 { 
  public int Id { get; set; }
  public string Name { get; set; }
  public string Age { get; set; }
 }

 User u = new User();
 u.Name = "lily";
 var propName = "Name";
 var propNameVal = u.GetType().GetProperty(propName).GetValue(u, null);
 
 Console.WriteLine(propNameVal);// "lily"

 User u = new User();
 u.Name = "lily";
 var propName = "Name";
 var newVal = "MeiMei";
 u.GetType().GetProperty(propName).SetValue(u, newVal);
 
 Console.WriteLine(propNameVal);// "MeiMei"

 User u = new User();

 foreach (var item in u.GetType().GetProperties())
 {
  Console.WriteLine($"propName:{item.Name},propType:{item.PropertyType.Name}");
 }
 // propName: Id,propType: Int32
 // propName:Name,propType: String
 // propName:Age,propType: String

 foreach (var item in typeof(User).GetProperties())
 {
  Console.WriteLine($"propName:{item.Name},propType:{item.PropertyType.Name}");
 }
 // propName: Id,propType: Int32
 // propName:Name,propType: String
 // propName:Age,propType: String

 static void Main(string[] args)
 {
  User u = new User();
  bool isContain= ContainProperty(u,"Name");// true
 }


 public static bool ContainProperty( object instance, string propertyName)
 {
  if (instance != null && !string.IsNullOrEmpty(propertyName))
  {
   PropertyInfo _findedPropertyInfo = instance.GetType().GetProperty(propertyName);
   return (_findedPropertyInfo != null);
  }
  return false;
 }

 public static class ExtendLibrary
 {
  /// <summary>
  /// 利用反射来判断对象是否包含某个属性
  /// </summary>
  /// <param name="instance">object</param>
  /// <param name="propertyName">需要判断的属性</param>
  /// <returns>是否包含</returns>
  public static bool ContainProperty(this object instance, string propertyName)
  {
   if (instance != null && !string.IsNullOrEmpty(propertyName))
   {
    PropertyInfo _findedPropertyInfo = instance.GetType().GetProperty(propertyName);
    return (_findedPropertyInfo != null);
   }
   return false;
  }
 }
 static void Main(string[] args)
 {
  User u = new User();
  bool isContain= u.ContainProperty("Name");// true
 }