Question

How can I write an invoke method with two parameters of differing variable types?

    public void InsertStockPrice(double Value, string Company)
    {
        if (InvokeRequired)
        {
            Invoke(new Action<double>(InsertStockPrice), Value); // <- Not sure what to do here
        }
        else
        {
            //Do stuff
        }
    }

Answer 1

I suspect this is what Jimmy meant (as Control.Invoke wouldn’t really know what to do with an Action<double, string>:

public void InsertStockPrice(double value, string company)
{
    if (InvokeRequired)
    {
        MethodInvoker invoker = () => InsertStockPrice(value, company);
        Invoke(invoker);
    }
    else
    {
        // Do stuff
    }
}

If you’re using C# 2:

public void InsertStockPrice(double value, string company)
{
    if (InvokeRequired)
    {
        MethodInvoker invoker = delegate { InsertStockPrice(value, company); }
        Invoke(invoker);
    }
    else
    {
        // Do stuff
    }
}

Note that I’ve changed the case of your parameters to fit in with normal .NET conventions.