Compiler error cs0229

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description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Compiler Error CS0229	Compiler Error CS0229	07/20/2015	CS0229	CS0229	f1ff7e91-1243-4d36-b792-26ba69186f8f

Ambiguity between ‘member1’ and ‘member2’

Members of different interfaces have the same name. If you want to keep the same names, you must qualify the names. For more information, see Interfaces.

[!NOTE]
In some cases, this ambiguity can be resolved by providing an explicit prefix to the identifier via a using alias.

Example

The following example generates CS0229:

// CS0229.cs  
  
interface IList  
{  
    int Count  
    {  
        get;  
        set;  
    }  
  
    void Counter();  
}  
  
interface ICounter  
{  
    double Count  
    {  
        get;  
        set;  
    }  
}  
  
interface IListCounter : IList, ICounter {}  
  
class MyClass  
{  
    void Test(IListCounter x)  
    {  
        x.Count = 1;  // CS0229  
        // Try one of the following lines instead:  
        // ((IList)x).Count = 1;  
        // or  
        // ((ICounter)x).Count = 1;  
    }  
  
    public static void Main() {}  
}

Источник

I am trying to call a Property called Filter that returns the string of the filter that is applied on a Table on my access application.

My library is:

using AccessApi = Microsoft.Office.Interop.Access;

My code is:

AccessApi.Application ap = (AccessApi.Application)Marshal.GetActiveObject("Access.Application");

string filter = ap.Screen.ActiveDatasheet.Filter;

But then Ambiguity Error occurs. I think I should overload somehow the Method I want to use but I don’t know how.

asked Aug 19, 2019 at 7:12

I had the same issue today. My problem was caused by an auto-generated file which is used by Xamarin. The file implemented and declared the same variables as from my code.
Check you solution for auto-generated files.

answered Nov 4, 2020 at 19:47

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Remove From My Forums

Question
I tried to implement the following scenario in VC++ 2005 beta2: an object implements 2 interfaces, one defining a property get and the other defining a property set.
This works perfectly well when implemented in C#. However, in C++, I get the compiler error message transcripted below.

Here is the C++ source code:

namespace NS
{
public interface class INamed
{
public:
  property String^ Name
  {
   String^ get();
  }
};

public interface class INameable
{
public:
  property String^ Name
  {
   void set(String^);
  }
};

public ref class NamedObject : public INamed, public INameable
{
private:
  String^ m_name;

public:
  property String^ Name
  {
   virtual String^ get() = INamed::Name::get
   {
    return m_name;
   }

   virtual void set(String^ value) = INameable::Name::set
   {
    m_name = value;
   }
  }
};
}

When I try to use my object in a C# program:

{
   NamedObject o = new NamedObject();
   String name = o.Name;
}

I get the following compiler error:
error CS0229: Ambiguity between ‘NS.INamed.Name’ and ‘NS.INameable.Name’

There should be no ambiguity since there is only one get and one set (and, as I mentionned before, the same code works in C#).

Is there anything wrong with my code (I hope so !).

Chris.

Answers

Chris: I just tried your example with a recent build of both the C++ and the C# compilers. Your code compiled without any error and when I extended it slightly it also executed correctly.

So it looks as if you are seeing a Beta-2 bug that has since been fixed.

Источник

Background

Experiencing error building a project in Visual Studio.

Error Image

Error Message

Error CS0229 Ambiguity between ‘_jobSummary’ and ‘_jobSummary’
Error CS0121 The call is ambiguous between the following methods or properties: ‘ExecJobActionAsync(Func<DbConnection, Task<int>>)’ and ‘ExecJobActionAsync(Func<DbConnection, Task<int>>)’
Error CS0229 Ambiguity between ‘IsEnabled’ and ‘IsEnabled’
Error CS0229 Ambiguity between ‘IsRunning’ and ‘IsRunning’

Troubleshooting

After a full day’s work, realized that the source of the problem is that I had backed up one of the source code files before editing it.

Unfortunately, the backup file was placed in a folder underneath the project’s working directory.

Remediation

To correct please do one of the following :-

Move the folders and files outside of the project’s working directory
Explicitly exclude the folder or file from the project

Visual Studio .Net Project

Outline

Choose the folders or files to exclude
- Right click on your selection
- From the drop-down menu, please choose Exclude

Image

Image – Exclude From Project ( Initiate )

Image – Exclude From Project ( Completed )

Review

Project

To review included and excluded files you can do the following :-

Outline

Ensure that Solution Explorer is tailored to show all files
Review each .csproj file

Image

Solution Explorer

Image – Show All Files

Project File ( .CSProj )

Image

Explain

Upon reviewing the .csproj file we notice the following
- A new ItemGroup
- The Item is tagged with “Compile Remove“

Summary

Please be careful where you place copied files as it might inadvertently be included in your project.

Источник

Eldarsuperstar

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Регистрация: 07.12.2020

Сообщений: 13

Неоднозначность между переменными

11.02.2021, 15:50. Показов 4025. Ответов 3

Метки нет (Все метки)

using System;
 
namespace Лабораторная_работа1_Линейный_поиск
{
    class Program
    {
        static int k; //кло-во элементов в массиве
        static int[] a = new int[10];// масиы
        static void Main(string[] args)
 
        {
            Console.Write("Ввести количество элементов: ");
            int k= Convert.ToInt32(Console.ReadLine());//из строчного в числовое значение
            for (int i = 0; i < k; i++)
            {
                Console.Write("Ввести элементы массива : ");
                a[i] = Convert.ToInt32(Console.ReadLine());
                Console.Write("  {0}", a[i]);
            }
            comparison();//линейный поиск
        }
        static void comparison()
        {
 
            Console.Write("Ввести элемент поиска: ");
            int x = Convert.ToInt32(Console.ReadLine());//из строчного в числовой тип
           
            int s = -1;
            Console.WriteLine("Линейный поиск:");
            for (int i = 0; i < k; i++)
            { 
                if (a[i] == x)    
                  s = i;
            }
            
            if (s>-1)
                Console.WriteLine("Номер элемента = {0}", s);
            else
                Console.WriteLine(" заданного элемента нет");
 
 
        }
 
 
    }
}

выводит ошибку с однозначностью переменных которые объявлены в static (a и k)

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Пора на C++?

369 / 263 / 99

Регистрация: 10.04.2020

Сообщений: 1,275

11.02.2021, 15:55

Сообщение от Eldarsuperstar

ошибку с однозначностью

Это что?

0 / 0 / 0

Регистрация: 07.12.2020

Сообщений: 13

11.02.2021, 15:58

[ТС]

Ошибка CS0229 Неоднозначность между «Program.a» и «Program.a»

Пора на C++?

369 / 263 / 99

Регистрация: 10.04.2020

Сообщений: 1,275

11.02.2021, 16:01

Сообщение было отмечено Eldarsuperstar как решение

Решение

Сообщение от Eldarsuperstar

Ошибка CS0229 Неоднозначность между «Program.a» и «Program.a»

Эта ошибка никак не относится к приведённому коду. Скорее всего, у вас что-то с файлами проекта.

Источник