I am tired of fixing this error but nothing is working.
Here is the error:
System.InvalidOperationException: Nullable object must have a value.
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource
resource) at System.Nullable1.get_Value() at
2 parameters) at
Finance.Calculator.Presentation.Admin.Areas.HDGS.Controllers.TransactionController.Edit(Int64
TransactionId, String returnURL) in
d:\BuildAgent2\work\83d988abf03ace44\Code\Presentation\Finance.Calculator.Presentation.Admin\Areas\HDGS\Controllers\TransactionController.cs:line
44 at lambda_method(Closure , ControllerBase , Object[] ) at
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase
controller, Object[] parameters) at
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext
controllerContext, IDictionary
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext
controllerContext, ActionDescriptor actionDescriptor, IDictionary2
1 continuation) at
parameters) at
System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12()
at
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter
filter, ActionExecutingContext preContext, Func
System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<>c__DisplayClass17.b__14()
at
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext
controllerContext, IList1 filters, ActionDescriptor actionDescriptor,
2 parameters) at
IDictionary
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext
controllerContext, String actionName)
Here is my Code:
public ViewResult Edit(string TId, string returnURL)
{
long tid = !string.IsNullOrEmpty(TId) ? Convert.ToInt64(TId) : Convert.ToInt64(Request.QueryString["TId"].ToString());
var TransactionItem = db.HDGSAccTransaction.SingleOrDefault(t => t.TransactionID.Equals(tid));
TransactionVM oTrns = null;
if (!string.IsNullOrEmpty(returnURL))
{
TempData["ReturnUrl"] = returnURL;
}
if (TransactionItem != null)
{
oTrns = new TransactionVM
{
TRef = TransactionItem.dimTransaction.TRef,
Yr = TransactionItem.Yr,
IcV = (decimal)TransactionItem.IcV,
OFv = (decimal)TransactionItem.OFv,
OCBv = (decimal)TransactionItem.OCBv,
OOBv = (decimal)TransactionItem.OOBv,
OInv = (decimal)TransactionItem.OInv
};
}
return View(oTrns);
}
Please Note: This code runs fine in the development environment from Visual Studio but not on the servers when it is deployed.
Best Answer
I guess the reason why it's only working on your development environment is that the variables always have a value there and on your server the nullables are
null
.If a
Nullable<T>
isnull
you cannot cast it explicitly to the value type because you get your exception "Nullable object must have a value". (Demo)So don't cast it. What value do you want to use instead of
null
, you could usedecimal.MinValue
:For what it's worth, here is an extension method:
Then you can from now on use this: