我问类似的问题
here
,假设这种类型:
,假设这种类型:
public class Product { public string Name { get; set; } public string Title { get; set; } public string Category { get; set; } public bool IsAllowed { get; set; } }
而这个使用MemberExpression的
public class HelperClass<T> { public static void Property<TProp>(Expression<Func<T,TProp>> expression) { var body = expression.Body as MemberExpression; if(body == null) throw new ArgumentException("'expression' should be a member expression"); string propName = body.Member.Name; Type proptype = null; } }
我这样用:
HelperClass<Product>.Property(p => p.IsAllowed);
在HelperClass中,我只需要属性名称(在本例中为IsAllowed)和属性类型(在此示例中为Boolean)所以我可以获取属性名称,但是我无法获取属性类型.我在调试中看到属性类型如下图所示:
那么你建议如何获得房产类型?
解决方法
尝试将body.Member转换为PropertyInfo
public class HelperClass<T> { public static void Property<TProp>(Expression<Func<T,TProp>> expression) { var body = expression.Body as MemberExpression; if (body == null) { throw new ArgumentException("'expression' should be a member expression"); } var propertyInfo = (PropertyInfo)body.Member; var propertyType = propertyInfo.PropertyType; var propertyName = propertyInfo.Name; } }