attributes C# reflection variable update site:stackoverflow.com
typeof(Book)
.GetProperty("Name")
.GetCustomAttributes(false)
.ToDictionary(a => a.GetType().Name, a => a);
attributes C# reflection variable update site:stackoverflow.com
typeof(Book)
.GetProperty("Name")
.GetCustomAttributes(false)
.ToDictionary(a => a.GetType().Name, a => a);
attributes C# reflection variable update site:stackoverflow.com
using System;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
public static class AttributeHelper
{
public static TValue GetPropertyAttributeValue<T, TOut, TAttribute, TValue>(
Expression<Func<T, TOut>> propertyExpression,
Func<TAttribute, TValue> valueSelector)
where TAttribute : Attribute
{
var expression = (MemberExpression) propertyExpression.Body;
var propertyInfo = (PropertyInfo) expression.Member;
var attr = propertyInfo.GetCustomAttributes(typeof(TAttribute), true).FirstOrDefault() as TAttribute;
return attr != null ? valueSelector(attr) : default(TValue);
}
}
//USAGE:
var author = AttributeHelper.GetPropertyAttributeValue<Book, string, AuthorAttribute, string>(prop => prop.Name, attr => attr.Author);
// author = "AuthorName"
attributes C# reflection variable update site:stackoverflow.com
private static Dictionary<string, string> GetAuthors()
{
return typeof(Book).GetProperties()
.SelectMany(prop => prop.GetCustomAttributes())
.OfType<AuthorAttribute>()
.ToDictionary(a => a.GetType().Name.Replace("Attribute", ""), a => a.Name);
}
attributes C# reflection variable update site:stackoverflow.com
var pInfo = typeof(Book).GetProperty("Name")
.GetCustomAttribute<DisplayAttribute>();
var name = pInfo.Name;
attributes C# reflection variable update site:stackoverflow.com
var attributeData = typeof(Book).GetProperty("Name").GetCustomAttributesData();
var attributes = typeof(Book).GetProperty("Name").GetCustomAttributes(false);
attributes C# reflection variable update site:stackoverflow.com
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
private static Dictionary<string, string> GetAttribute<TAttribute, TType>(
Func<TAttribute, string> valueFunc)
where TAttribute : Attribute
{
return typeof(TType).GetProperties()
.SelectMany(p => p.GetCustomAttributes())
.OfType<TAttribute>()
.ToDictionary(a => a.GetType().Name.Replace("Attribute", ""), valueFunc);
}
var dictionary = GetAttribute<AuthorAttribute, Book>(a => a.Name);
attributes C# reflection variable update site:stackoverflow.com
public static Dictionary<string, string> GetAuthors()
{
Dictionary<string, string> _dict = new Dictionary<string, string>();
PropertyInfo[] props = typeof(Book).GetProperties();
foreach (PropertyInfo prop in props)
{
object[] attrs = prop.GetCustomAttributes(true);
foreach (object attr in attrs)
{
AuthorAttribute authAttr = attr as AuthorAttribute;
if (authAttr != null)
{
string propName = prop.Name;
string auth = authAttr.Name;
_dict.Add(propName, auth);
}
}
}
return _dict;
}
attributes C# reflection variable update site:stackoverflow.com
using System;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
public static class AttributeHelper
{
public static TValue GetPropertyAttributeValue<T, TOut, TAttribute, TValue>(
Expression<Func<T, TOut>> propertyExpression,
Func<TAttribute, TValue> valueSelector)
where TAttribute : Attribute
{
var expression = (MemberExpression) propertyExpression.Body;
var propertyInfo = (PropertyInfo) expression.Member;
var attr = propertyInfo.GetCustomAttributes(typeof(TAttribute), true).FirstOrDefault() as TAttribute;
return attr != null ? valueSelector(attr) : default(TValue);
}
}
attributes C# reflection variable update site:stackoverflow.com
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
private static Dictionary<string, string> GetAttribute<TAttribute, TType>(
Func<TAttribute, string> valueFunc)
where TAttribute : Attribute
{
return typeof(TType).GetProperties()
.SelectMany(p => p.GetCustomAttributes())
.OfType<TAttribute>()
.ToDictionary(a => a.GetType().Name.Replace("Attribute", ""), valueFunc);
}
attributes C# reflection variable update site:stackoverflow.com
using System.Collections.Generic;
using System.ComponentModel;
using System.Reflection;
public static class Program
{
static void Main()
{
PropertyInfo prop = typeof(Foo).GetProperty("Bar");
var vals = GetPropertyAttributes(prop);
// has: DisplayName = "abc", Browsable = false
}
public static Dictionary<string, object> GetPropertyAttributes(PropertyInfo property)
{
Dictionary<string, object> attribs = new Dictionary<string, object>();
// look for attributes that takes one constructor argument
foreach (CustomAttributeData attribData in property.GetCustomAttributesData())
{
if(attribData.ConstructorArguments.Count == 1)
{
string typeName = attribData.Constructor.DeclaringType.Name;
if (typeName.EndsWith("Attribute")) typeName = typeName.Substring(0, typeName.Length - 9);
attribs[typeName] = attribData.ConstructorArguments[0].Value;
}
}
return attribs;
}
}
class Foo
{
[DisplayName("abc")]
[Browsable(false)]
public string Bar { get; set; }
}
Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us