vb.net on type conversion and retention of two decimal places

风中草

How can I keep the two digits after the decimal point from the recordset?
Response.Write (rs ("test"). Value)
The output is
1.36894117647059
How can I keep the two digits after the decimal point?

59433945

Math.Round (rs ("test"). Value, 2)

风中草

Will report an error

Exception Details: System.Reflection.AmbiguousMatchException: The overload decision failed because there is no Public "Round" that can be called with these parameters:
   'Public Shared Function Round (d As Decimal, decimals As Integer) As Decimal':
       A parameter matching the parameter "d" cannot be converted from "DBNull" to "Decimal".
   'Public Shared Function Round (d As Decimal, mode As System.MidpointRounding) As Decimal':
       A parameter matching the parameter "d" cannot be converted from "DBNull" to "Decimal".
   'Public Shared Function Round (value As Double, digits As Integer) As Double':
       Parameters matching the parameter "value" cannot be converted from "DBNull" to "Double".
   'Public Shared Function Round (value As Double, mode As System.MidpointRounding) As Double':
       Parameters matching the parameter "value" cannot be converted from "DBNull" to "Double".

59433945

double i = convert.todouble (rs ("test"). value);
Math.Round (i, 2)