Aveva. Nwei в тоннах программно.

dim qm as new dbunits
           qm = dbunits.tonne
           dim gm as dbdimension
           gm = dbdimension.mass

           dim qual as new dbqualifier()
           qual.add(qm)
           qual.add(gm)
 dim nnweiitt as double = currentelement.element.getdouble(dbattributeinstance.nwei, qual)

dim f1 as dbformat = dbformat.create()
           f1.dimension = dbdoubledimension.getdimension(dbdimension.mass)
           f1.units = dbdoubleunits.getunits(dbunits.tonne)
           dim d1 as dbdouble = dbdouble.create("1", f1)

dim nnweiitt as double = currentelement.element.getdouble(dbattributeinstance.nwei, d1)

[color=#1000a0]private[/color] string str)
{
   dbdouble num[/b];
   [color=#1000a0]if[/color] ((str.length == [color=#800000]0[/color]))
   {
       [color=#1000a0]return[/color] create();
   }
   [color=#1000a0]try[/color]
   {
       getformat([color=#800000]"massfmt"[/color]);
       num = create(str, format);
       getunits([color=#800000]"kg"[/color]);
       num = num.convertunits(units);
   }
   [color=#1000a0]catch[/color] (exception)
   {
       [color=#1000a0]throw[/color] [color=#1000a0]new[/color] exception([color=#800000]"string '"[/color] + str + [color=#800000]"' cannot be converted to a weight"[/color]);
   }
   [color=#1000a0]if[/color] (num.value < [color=#800000]0.0[/color])
   {
       [color=#1000a0]throw[/color] [color=#1000a0]new[/color] exception([color=#800000]"a negative weight has been entered"[/color]);
   }
   [color=#1000a0]return[/color] num;
}