How to move up/down an array?

(this is C#)
i have a simple loading system: each tile is assigned a value, and just strung in a line one after another.
i got the load done, but i have 100800 array elements. how do i move up the array?
eg: array[0] to array[1] untill array[100800]
it has to load every array.
i tried doing

temp = Convert.ToInt32 (array[tempnumb])
{code}
tempnumb++;

Also i have some more positions after the 100800th that will be loaded separatly, so untill 100800th then stop.
but no luck. help?

@Platy

In your question, your have three separate names for your array (Array1, array1, and array). Do you have multiple Arrays, or do you have a single array with 100800 positions in said array? Also, what programming language are you using?