C# Error CS7003 – Unexpected use of an unbound generic name

C# Error

CS7003 – Unexpected use of an unbound generic name

Reason for the Error & Solution

Unexpected use of an unbound generic name

This error occurs if you use a generic type needing one parameter type without passing any generic parameter type name between the angle brackets. This use may be a variable declaration, or an object instantiation.

To correct this error

Provide one parameter type name in angle brackets when using a generic type.

Example

The following example generates CS7003:

// CS7003.cs
class Program
{
    static void Main(string[] args)
    {
        var myVar1 = new MyGenericClass<>();  //CS7003

        MyGenericClass<> var2;                //CS7003
    }
}

public class MyGenericClass<T> { }