using System;

public class Program

{

    public static void Main()

    {

        Program p = new Program();

        p.ValidateFile<SomeFileClass>(new FileImportParameters(), 1, 1, 1, 1, 1, 1, 1);

        p.ValidateFile<AnotherFileClass>(new FileImportParameters(), 1, 1, 1, 1, 1, 1, 1);

    }

    public void ValidateFile<T>(

    FileImportParameters ImportParameters,

    int SomeId,

    int Digits,

    int Name,

    int Age,

    int Initials,

    int Date,

    int Validation

    ) where T : FileBaseClass, IDisposable, new()

    {

        using (T p = new T())

        {

            // code block

            p.CallSQLProc();

        }

    }

}

​

​

​

public abstract class FileBaseClass : IDisposable

{

    public void Dispose()

    {

    }

    public abstract void CallSQLProc();

}

​

public class SomeFileClass : FileBaseClass, IDisposable

{

    public override void CallSQLProc()

    {

        Console.WriteLine("// call SomeFileVersion");

    }

}

​

​

public class AnotherFileClass : FileBaseClass, IDisposable

{

    public override void CallSQLProc()

    {

        Console.WriteLine("// call AnotherFileVersion");

    }

}

​

public class FileImportParameters {}