How to use C# extension methods with SmartFormat reflection syntax?

How to use C# extension methods with SmartFormat reflection syntax?

By : Javi LM
Date : November 19 2020, 12:41 AM
seems to work fine Short answer
It is currently not possible to call extension methods inside SmartFormat formatting braces.
code :
Smart.Format("{Name.ToUpper} is my name", ps).Dump();
Smart.Format("{0} is my name", ps["Name"].Foo()).Dump();

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Extension methods syntax vs query syntax

Extension methods syntax vs query syntax

By : Uri
Date : March 29 2020, 07:55 AM
hope this fix your issue Honestly, sometimes it can be situational once you start using Funcs and Actions. Say you are using these three funcs:
code :
  Func<DataClasses.User, String> userName = user => user.UserName;
  Func<DataClasses.User, Boolean> userIDOverTen = user => user.UserID < 10;
  Func<DataClasses.User, Boolean> userIDUnderTen = user => user.UserID > 10;
  var userList = 
    from user in userList
    where userIDOverTen(user)
    select userName;
  var otherList =
  private Boolean IDIsBelowNumber(DataClasses.User user, 
          Int32 someNumber, Boolean doSomething)
    return user.UserID < someNumber;
  var completeList =
     from user in userList
     where IDIsBelowNumber(user, 10, true)
     select userName;
  var otherList =
   private Func<DataClasses.User, Boolean> IDIsBelowNumberFunc(Int32 number)
      return user => IDIsBelowNumber(user, number, true);
  var otherList =
Reflection to Identify Extension Methods

Reflection to Identify Extension Methods

By : camt
Date : March 29 2020, 07:55 AM
I wish this helpful for you You have to look in all the assemblies where the extension method may be defined.
Look for classes decorated with ExtensionAttribute, and then methods within that class which are also decorated with ExtensionAttribute. Then check the type of the first parameter to see if it matches the type you're interested in.
code :
using System;
using System.Runtime.CompilerServices;
using System.Reflection;
using System.Linq;
using System.Collections.Generic;

public static class FirstExtensions
    public static void Foo(this string x) {}
    public static void Bar(string x) {} // Not an ext. method
    public static void Baz(this int x) {} // Not on string

public static class SecondExtensions
    public static void Quux(this string x) {}

public class Test
    static void Main()
        Assembly thisAssembly = typeof(Test).Assembly;
        foreach (MethodInfo method in GetExtensionMethods(thisAssembly,

    static IEnumerable<MethodInfo> GetExtensionMethods(Assembly assembly,
        Type extendedType)
        var query = from type in assembly.GetTypes()
                    where type.IsSealed && !type.IsGenericType && !type.IsNested
                    from method in type.GetMethods(BindingFlags.Static
                        | BindingFlags.Public | BindingFlags.NonPublic)
                    where method.IsDefined(typeof(ExtensionAttribute), false)
                    where method.GetParameters()[0].ParameterType == extendedType
                    select method;
        return query;
Translate Query Syntax to Extension Methods Syntax

Translate Query Syntax to Extension Methods Syntax

By : Abhishek Singh
Date : March 29 2020, 07:55 AM
seems to work fine Below I'll answer your question exactly. However, I don't really see why you would want to have your query translated to extension methods, so I think this answer is not the answer you're looking for. If so, could you dive into the terminology and rephrase the question?
code :
return (from person in this.context.Persons
        from email in this.context.EmailAddresses
        where email.EmailAddress == emailAddress
        select person).FirstOrDefault();
return this.context.Persons
    .SelectMany(p => this.context.EmailAddresses,
        (p, e) => new { Person = p, Email = e})
    .Where(pe => pe.Email == pe.Person)
    .Select(pe => pe.Person)
Why are Reflection's GetProperty() or GetField() not instance or extension methods?

Why are Reflection's GetProperty() or GetField() not instance or extension methods?

By : Rakesh
Date : March 29 2020, 07:55 AM
I wish did fix the issue.
To get an instance field, you have to do typeof(MyClass).GetField("fieldName").GetValue(myClassInstance). Which is not the most straightforward thing.
code :
VB.NET syntax and string Extension Methods

VB.NET syntax and string Extension Methods

By : jack
Date : March 29 2020, 07:55 AM
wish of those help I can confirm this is indeed a “bug” (tested in Visual Studio 2008). But in fact, it’s by design in VB and won’t be changed.
However, I’d like to take the time to explain why this is a horrible question. Sorry Serhio.
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