Cannot declare instance members in a static class

Cannot declare instance members in a static class

Cannot declare instance members in a static class

This short post examines the error message “Cannot declare instance members in a static class” when developing in C# in Visual Studio.

Consider the below example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Test
{

    static class testClass
    {
        string sampleString = "Hello World!";
    }
}

If you try to compile the above code, you will get the error message:

CS0708 ‘testClass.sampleString’: cannot declare instance members in a static class

If you see this error message, don’t worry. The solution is very simple. You just need to specify as static the string declaration within the class. So, the correct code for this example would be the below:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Test
{

    static class testClass
    {
        static string sampleString = "Hello World!";
    }
}

So, you just compile and that’s it! No errors!

Cannot declare instance members in a static class

 

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Reference: SQLNetHub (https://www.sqlnethub.com)

© SQLNetHub


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Artemakis Artemiou
Artemakis Artemiou is a Senior SQL Server Architect, Author, Software Developer and a Microsoft Data Platform MVP. He has over 15 years of experience in the IT industry in various roles. Among other, via his initiative SQLEBooks.com, Artemakis authors and publishes eBooks on different topics on SQL Server. Artemakis currently serves as the President of the Cyprus .NET User Group (CDNUG) and the International .NET Association Country Leader for Cyprus (INETA). Additionally he is the founder of the SQLArtBits initiative that aims to provide the technical community with simple, yet powerful and high-quality SQL Server tools. Currently, the highlights of these tools are DBA Security Advisor and In-Memory OLTP Simulator. Artemakis's official website can be found at aartemiou.com. Artemakis's blogs can be found at: SQLNetHub.com and TechHowTos.com.