Is there a simpler way to do this if statement in C#

Question

I have the following:

if (model.PartitionKey.Substring(2, 2) == \"05\" || 
    model.PartitionKey.Substring(2, 2) == \"06\")

I have more like t

Answer 1

For such kind of cases I use an Extension Method

public static bool In(this T source, params T[] list)
{
   if (source = null)
       throw new NullReferenceException("Source is Null");

   return list.Contains(source);
}

and call it as

if (model.PartitionKey.Substring(2, 2).In("05", "06"))

Being an Extension Method we can call it for all types like

if(myintegervariable.In(3, 4));

OR

if(mybytevariable.In(23, 56, 34, 43, 87, 155));