[C#] How can I check if an array index is valid?

[Sippeangelo]

Well I have a string with a couple of words.
"Blah hello smart"
They get divided up into an array like so:
[0] = "Blah"
[1] = "hello"
[2] = "smart"

Now if the string is only "Blah" I only get one array index
[0] = "Blah"

But I have to check if there is an value with index [1] in the array.
How can I do that?
Sience doing

if (array[1] == "")
{
 
}
 

or

if (array[1] == null)
{
 
}
 

just return an error saying there is no value in the array with index [1].

I found this page: http://msdn2.microsoft.com/en-us/library/aa628583.aspx
It's exactly what I need but there is no info about it. Not even what language it's for.
In C# array.exists means something whole different.

Can someone help me?

[weaknessforcats]

I am moving this to the .NET forum.