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QuestionNullable(Of Decimal) type variable is throwing exception "Nullable object must have a value." Pin
indian14327-Dec-12 18:14
memberindian14327-Dec-12 18:14 
Hi All,

I am getting following error when I am trying to assign a null value or nuthing value to a variable of type Nullable(Of Decimal).

But for that variable I want to assign a decimal value or null value. The same kind of problem I faced with Nullable (of DateTime) too. It cant take a nothing assigned to it. If it cant take that value then why is it nullable(of Decimal) or Nullable (of DateTime) and System.Nullable(Of Integer) is also not taking null values (means nothing value in VB.Net).

Please help me in resolving this issue.

thanks in advance.

Below is my code: I tried by just putting variable=nothing also but didnt work.

If savRequestData.PropRequestWage IsNot Nothing Then
                               wagesegment = New List(Of ReqWage)
                               For Each temp In savRequestData.PropRequestWage
                                   Dim wage As New ReqWage
                                   wage.DailyWage = IIf(Not String.IsNullOrEmpty(temp.DailyWage), IIf(Decimal.TryParse(temp.DailyWage, tempDecimal), tempDecimal, CType(Nothing, System.Nullable(Of Decimal))), CType(Nothing, System.Nullable(Of Decimal)))
                                   wage.RequestId = request_Id
                                   wage.WorkDate = temp.WorkDate
                                   wage.WorkHours = IIf(Not String.IsNullOrEmpty(temp.WorkHours), IIf(Decimal.TryParse(temp.WorkHours, tempDecimal), tempDecimal, CType(Nothing, System.Nullable(Of Decimal))), CType(Nothing, System.Nullable(Of Decimal)))
                                   wagesegment.Add(wage)
                                   requestedamount += IIf(temp.DailyWage IsNot Nothing, temp.DailyWage, 0)
                               Next
                            End If

Thanks & Regards,

Abdul Aleem Mohammad
St Louis MO - USA

AnswerRe: Nullable(Of Decimal) type variable is throwing exception "Nullable object must have a value." Pin
Eddy Vluggen28-Dec-12 8:41
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