本文实例讲述了C#通过属性名字符串获取、设置对象属性值操作.分享给大家供大家参考，具体如下：
#通过反射获取对象属性值并设置属性值
0、定义一个类
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public class User{ public int Id { get; set; } public string Name { get; set; } public string Age { get; set; }} |
1、通过属性名（字符串）获取对象属性值
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User u = new User();u.Name = "lily";var propName = "Name";var propNameVal = u.GetType().GetProperty(propName).GetValue(u, null);Console.WriteLine(propNameVal);// "lily" |
2、通过属性名（字符串）设置对象属性值
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User u = new User();u.Name = "lily";var propName = "Name";var newVal = "MeiMei";u.GetType().GetProperty(propName).SetValue(u, newVal);Console.WriteLine(propNameVal);// "MeiMei" |
#获取对象的所有属性名称及类型
通过类的对象实现
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User u = new User();foreach (var item in u.GetType().GetProperties()){ Console.WriteLine($"propName:{item.Name},propType:{item.PropertyType.Name}");}// propName: Id,propType: Int32// propName:Name,propType: String// propName:Age,propType: String |
通过类实现
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foreach (var item in typeof(User).GetProperties()){ Console.WriteLine($"propName:{item.Name},propType:{item.PropertyType.Name}");}// propName: Id,propType: Int32// propName:Name,propType: String// propName:Age,propType: String |
#判断对象是否包含某个属性
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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;} |
将其封装为扩展方法
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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} |
希望本文所述对大家C#程序设计有所帮助。
原文链接：https://www.cnblogs.com/willingtolove/p/12198871.html
