C# Error CS0736 – ‘{0}’ does not implement instance interface member ‘{1}’. ‘{2}’ cannot implement the interface member because it is static.

C# Error

CS0736 – ‘{0}’ does not implement instance interface member ‘{1}’. ‘{2}’ cannot implement the interface member because it is static.

Reason for the Error & Solution

‘type name’ does not implement interface member ‘member name’. ‘method name’ cannot implement an interface member because it is static.

This error is generated when a static method is either implicitly or explicitly declared as an implementation of an interface member.

To correct this error

• Remove the modifier from the method declaration.

• Change the name of the interface method.

• Redefine the containing type so that it does not inherit from the interface.

Example

The following code generates CS0736 because Program.testMethod is declared as static:

// cs0736.cs  
namespace CS0736  
{
  
    interface ITest  
    {  
        int testMethod(int x);  
    }  
  
    class Program : ITest // CS0736  
    {  
        public static int testMethod(int x) { return 0; }  
        // Try the following line instead.  
        // public int testMethod(int x) { return 0; }  
        public static void Main() { }  
    }
}