LINQ:如何检查类型中是否有除零器

Question

是否有一种方法(不使用try catch)来检查下面ps.sum中的零，因此它不会抛出除零错误?

var procVsTotPkg = unitGroup.Join(procSums, g => new 
{
    g.DeptID,
    g.UnitLoc,
    g.Proc
},
ps => new
{                      
    DeptID = ps.key.deptID,
    UnitLoc = ps.key.unitLoc,
    Proc = ps.key.procName
}, (g, ps) => new procVSUnitTotalJoin
{
    dept = g.DeptID,
    uloc = g.UnitLoc,
    procName = g.Proc,
    unitName = g.Unit,
    unitTotal = g.CurrVal,
    procTotal = ps.sum,
    PTPcntOfUT = Math.Round((g.CurrVal / ps.sum) * 100, 2)
}).Single();

Answer 1

PTPcntOfUT = ps.sum != 0 ? Math.Round((g.CurrVal/ps.sum)*100) : valueIfSumIsZero

Answer 2

如何:

(g, ps) => new procVSUnitTotalJoin
              {
                   dept = g.DeptID,
                   uloc = g.UnitLoc,
                   procName = g.Proc,
                   unitName = g.Unit,
                   unitTotal = g.CurrVal,
                   procTotal = ps.sum,
                   PTPcntOfUT = Math.Round((g.CurrVal / (ps.sum == 0 ? 1:ps.sum)) * 100, 2)
              }