I have a string that has extended ASCII char ÿ in it and I am trying to delete it. How do I find it in a string and delete it from a string like this: `1ÿ1ÿ0ÿÿÿ`?

The byte array, buffer = { 49, 0, 255, 255, 49, 0, 255, 255, 48, 0, 255, 255, 255, 255 } 

I am using C# and the string was formed from a byte array like so: `temp.Add(System.Text.Encoding.ASCII.GetString(buffer));` 

Then, the first item in temp is `"1\0??1\0??0\0????"`

I would like to remove the non-ASCII values from the string, or better yet the buffer.