与主路由和过滤器匹配但与子路由不匹配的正则表达式

Question

I have to make a Regular Expression on C# that matches with the following expressions:

/videos/

/videos?filter=some%filter

/videos

But I need that this Regex does not match with expressions like:

/videos/1

/videos/67

For the moment I have the next code, but I do not really know how to complete the expression to make these matches with every word except numbers.

String currentUrl = Context.Request.Path.ToString() + Context.Request.QueryString.ToString();
String pageName = ViewContext.RouteData.Values["controller"].ToString();
Regex reg = new Regex(@"/(videos)(\/)?([^0-9])/g");

if (pageName == "Home")
{
    Html.RenderPartial("Partials/_LandingNavbarPartial");
}
else if (reg.IsMatch((currentUrl.ToLower())))
{
    Html.RenderPartial("Partials/_FilterNavbarPartial");
    @("Matches")
}
else
{
    Html.RenderPartial("Partials/_NavbarPartial");
    @("Not Matches")
}

I am interested in finish my regex expression: /(videos)(\\/)?([^0-9])/

Answer 1

After literally learn Regex from scratch, I have found the next expression:

(videos)\/*[^\d]*

Works as I mentioned that I wanted for.