我问类似问题here ,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; }
}
这个使用MemberExpression
的人:
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(在此示例中为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我无法获取属性类型。我在调试中看到了属性类型,如下图所示:
那么您建议获得房产类型是什么?
答案 0 :(得分:26)
尝试将body.Member
投射到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;
}
}