[int] 32-bit signed integer 
[long] 64-bit signed integer 
[string] Fixed-length string of Unicode characters 
[char] Unicode 16-bit character 
[bool] True/false value 
[byte] 8-bit unsigned integer 
[double] Double-precision 64-bit floating point number 
[decimal] 128-bit decimal value 
[single] Single-precision 32-bit floating point number 
[array] Array of values 
[xml] Xmldocument object 
[hashtable] Hashtable object (similar to a Dictionary object)