VB.Net - Syntax

Dim asMulti(5,5) As String 

GetLowerBound - Get the upper bound of the specified dimension. Starting at the number 0.
GetUpperBound - Get the lower bound of the specified dimension. Starting at the number 0.

Dim asTableValues(10, 200) As String 
Dim asTableValues As String() 

asTableValues.GetUpperBound(0) = 10 
asTableValues.GetUpperBound(1) = 200 

Dim icolumnnumber As Integer 
For icolumnnumber = 0 To asArrayName.GetUpperBound(0) 

Next icolumnnumber 

Dim irowcount As Integer 
For irowcount = 0 To asArrayName.GetUpperBound(1) 

Next irowcount