Member method cannot be accessed with an instance reference

Question

I am getting into C  and I am having this issue   namespace MyDataLayer       namespace Section1               public class MyClass                       public class MyItem                               public static string Property1  get  set                              public static MyItem GetItem                                 MyItem theItem   new MyItem                    theItem Property1    MyValue                   return theItem                                      I have this code on a UserControl   using MyDataLayer Section1   public class MyClass       protected void MyMethod               MyClass MyItem oItem   new MyClass MyItem            oItem   MyClass GetItem            someLiteral Text   oItem Property1            Everything works fine  except when I go to access Property1  The intellisense only gives me  Equals  GetHashCode  GetType  and ToString  as options  When I mouse over the oItem Property1  Visual Studio gives me this explanation      MemberMyDataLayer Section1 MyClass MyItem Property1 getcannot be accessed with an instance reference  qualify it with a type name instead   I am unsure of what this means  I did some googling but wasn t able to figure it out

User · Answer

Check whether your code contains a namespace which the right most part matches your static class name.

Given the a static Bar class, defined on namespace Foo, implementing a method Jump or a property, chances are you are receiving compiler error because there is also another namespace ending on Bar. Yep, fishi stuff ;-)

If that's so, it means your using a Using Bar; and a Bar.Jump() call, therefore one of the following solutions should fit your needs:

Fully qualify static class name with according namepace, which result on Foo.Bar.Jump() declaration. You will also need to remove Using Bar; statement
Rename namespace Bar by a diffente name.

In my case, the foollowing compiler error occurred on a EF (Entity Framework) repository project on an Database.SetInitializer() call:

Member 'Database.SetInitializer<MyDatabaseContext>(IDatabaseInitializer<MyDatabaseContext>)' cannot be accessed with an instance reference; qualify it with a type name instead MyProject.ORM

This error arouse when I added a MyProject.ORM.Database namespace, which sufix (Database), as you might noticed, matches Database.SetInitializer class name.

In this, since I have no control on EF's Database static class and I would also like to preserve my custom namespace, I decided fully qualify EF's Database static class with its namepace System.Data.Entity, which resulted on using the following command, which compilation succeed:

System.Data.Entity.Database.SetInitializer<MyDatabaseContext>(MyMigrationStrategy)

Hope it helps

User · Answer

I got here googling for C  compiler error CS0176  through  duplicate  question Static member instance reference issue    In my case  the error happened because I had a static method and an extension method with the same name  For that  see Static method and extension method with same name    May be this should have been a comment  Sorry that I don t have enough reputation yet

User · Answer

This causes the error   MyClass aCoolObj   new MyClass    aCoolObj MyCoolStaticMethod      This is the fix   MyClass MyCoolStaticMethod      Explanation   You can t call a static method from an instance of an object  The whole point of static methods is to not be tied to instances of objects  but instead to persist through all instances of that object  and or to be used without any instances of the object

User · Answer

cannot be accessed with an instance reference   It means you re calling a STATIC method and passing it an instance  The easiest solution is to remove Static  eg   public static void ExportToExcel IEnumerable data  string sheetName

User · Answer

You can only access static members using the name of the type   Therefore  you need to either write   MyClass MyItem Property1   Or  this is probably what you need to do  make Property1 an instance property by removing the static keyword from its definition   Static properties are shared between all instances of their class  so that they only have one value   The way it s defined now  there is no point in making any instances of your MyItem class

User · Answer

YourClassName YourStaticFieldName   For your static field would look like   public class StaticExample       public static double Pi   3 14      From another class  you can access the staic field as follows       class Program            static void Main string   args                  double radius   6           double areaOfCircle   0            areaOfCircle   StaticExample Pi   radius   radius           Console WriteLine  Area     areaOfCircle             Console ReadKey

User · Answer

No need to use static in this case as thoroughly explained  You might as well initialise your property without GetItem   method  example of both below   namespace MyNamespace       using System       public class MyType               public string MyProperty   get  set      new string            public static string MyStatic   get  set       I m static             Consuming   using MyType   public class Somewhere        public void Consuming                through instance of your type         var myObject   new MyType             var alpha   myObject MyProperty              through your type          var beta   MyType MyStatic

User · Answer

In C   unlike VB NET and Java  you can t access static members with instance syntax  You should do   MyClass MyItem Property1   to refer to that property or remove the static modifier from Property1  which is what you probably want to do   For a conceptual idea about what static is  see my other answer

User · Answer

I know this is an old thread  but I just spent 3 hours trying to figure out what my issue was   I ordinarily know what this error means  but you can run into this in a more subtle way as well   My issue was my client class  the one calling a static method from an instance class  had a property of a different type but named the same as the static method   The error reported by the compiler was the same as reported here  but the issue was basically name collision     For anyone else getting this error and none of the above helps  try fully qualifying your instance class with the namespace name        so the compiler can see the exact name you mean

User · Answer

I had the same issue - although a few years later  some may find a few pointers helpful   Do not use    static    gratuitously     Understand what    static    implies in terms of both run-time and compile time semantics  behavior  and syntax      A static entity will be automatically constructed some time before its first use  A static entity has one storage location allocated  and that is shared by all who access that entity  A static entity can only be accessed through its type name  not through an instance of that type  A static method does not have an implicit    this    argument  as does an instance method    And therefore a static method has less execution overhead     one reason to use them   Think about thread safety when using static entities    Some details on static in MSDN    Static Classes in C  Static Constructors in C

[c#] Member '<method>' cannot be accessed with an instance reference

Examples related to c#

Examples related to asp.net