想要实现的效果：
xxxObj.Set(x=>x.Name, name)
如此，就可以实现：由业务方决定将 何值 写到 何属性 中。
关键代码
/// <summary> /// 使用 lambda 表达式设置值 /// </summary> /// <typeparam name="T"></typeparam> /// <typeparam name="TValue"></typeparam> /// <param name="target"></param> /// <param name="memberLambda"></param> /// <param name="value"></param> public static void SetPropertyValue<T, TValue>(this T target, Expression<Func<T, TValue>> memberLambda, TValue value) { if (memberLambda.Body is MemberExpression memberSelectorExpression) { var property = memberSelectorExpression.Member as PropertyInfo; if (property != null) { property.SetValue(target, value); } } } /// <summary> /// 使用 lambda 表达式设置值 /// </summary> /// <typeparam name="T"></typeparam> /// <typeparam name="TValue"></typeparam> /// <param name="target"></param> /// <param name="memberLambda"></param> /// <param name="default">没有获取到值时的默认值</param> public static TValue GetPropertyValue<T, TValue>(this T target, Expression<Func<T, TValue>> memberLambda, TValue @default) { if (memberLambda.Body is MemberExpression memberSelectorExpression) { var property = memberSelectorExpression.Member as PropertyInfo; if (property != null) { return (TValue)property.GetValue(target); } } return @default; }