Value cannot be null" Parameter Name:source

C# Corner

class="form-group row">

@Html.LabelFor(model => model.Account.Number, new { @class = "col-sm-5 control-label", @required = "required" })

class="col-sm-5">

@Html.EditorFor(model => model.Account.Number)

@Html.ValidationMessageFor(model => model.Account.Number, "", new { @class = "text-danger" })

class="form-group row">

@Html.LabelFor(model => model.Account.Description, new { @class = "col-sm-5 control-label" })

class="col-sm-5">

@Html.EditorFor(model => model.Account.Description)

class="form-group row">

@Html.LabelFor(model => model.Account.StartDate, new { @class = "col-sm-5 control-label" })

class="col-sm-4">

@(Html.DevExtreme().DateBoxFor(m => m.Account.StartDate)

.ID("AccountStartDate")

.DisplayFormat(System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern)

.Placeholder(System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern)

.ShowClearButton(false)

.InvalidDateMessage("The date must have the following format: " + System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern)

)

@Html.ValidationMessageFor(model => model.Account.StartDate, "", new { @class = "text-danger" })

class="info-text" style="text-align:center">

Does this account have portfolios?

@*"toggle-portfolios" type="checkbox" data-toggle="toggle" data-on="Yes" data-off="No" data-onstyle="success" data-offstyle="danger" style="margin-left:10px;">*@

"button" class="btn btn-success" id="btnYes" onclick="toggleOn()" value="Yes">

"button" class="btn btn-danger" id="btnNo" onclick="toggleOff()" value="No">

class="portfoliosForm">

class="form-horizontal">

class="row1">

class="box box-solid">

class="box-header">

class="box-body">

class="form-group row">

class="col-sm-5" style="text-align:right">Choose an existing product

class="col-sm-5">

@(Html.LabelFor(m => m.ProductId))

@(Html.DropDownListFor(m => m.ProductId, new SelectList(Model.DDLProducts.OrderBy(x => x.Text), "Value", "Text"), "Please Select...", new { @class = "form-control", @id = "ddlProduct" }))

class="form-group row">

@*@Html.LabelFor(model => model.InvetsmentDate, new { @class = "col-sm-5 control-label" })*@

class="col-sm-5" style="text-align:right">Start date

class="col-sm-5">

@(Html.DevExtreme().DateBoxFor(m => m.InvetsmentDate)

.ID("InvestmentStartDate")

.DisplayFormat(System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern)

.Placeholder(System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern)

.ShowClearButton(false)

.InvalidDateMessage("The date must have the following format: " + System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern)

)

@Html.ValidationMessageFor(model => model.InvetsmentDate, "", new { @class = "text-danger" })

class="modal-footer">

"submit" class="btn btn-primary" id="submitAccountEdit">Save

"button" class="btn btn-primary" data-dismiss="modal">Cancel

}

@Scripts.Render("~/bundles/jqueryval")

@Scripts.Render("~/bundles/wizard")

Controller

[HttpGet]
public ActionResult AddAccountModal(int clientId)
{
if (_logger.IsInfoEnabled)
_logger.LogInfo(string.Format("Entering AddAccountModal with ID {0}", clientId));
using (var dbContextScope = _dbContextScopeFactory.CreateReadOnly())
{
// Only coded for adding new accounts right now
AccountSetup.Models.AccountDetailViewModel model = new AccountSetup.Models.AccountDetailViewModel()
{
Account = new AccountSetup.Models.OrganizationViewModel()
{
StartDate = DateTime.Now.Date
},
Client = new AccountSetup.Models.OrganizationHierarchyViewModel()
{
ParentId = clientId
},
DDLProducts = SelectListItemHelper.Organizations(GetCustomerId(), "PR"),
InvetsmentDate = DateTime.Now.Date
};
if (_logger.IsInfoEnabled)
_logger.LogInfo("Exiting AddAccountModal");
return PartialView(model);
}
}

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult AddAccountModal(AccountSetup.Models.AccountDetailViewModel model)
{
using (var dbContextScope = _dbContextScopeFactory.Create())
{
User user = _Login.GetCurrentUser();
AccountValidationController accountValidation = new AccountValidationController();
// Edit not yet implemented!
var isEdit = model.Account.Id > 0;
if (isEdit)
{
var acct = _AcRepo.GetAccount(model.Account.Id, user);
acct.Name = model.Account.Name;
acct.OrganizationNumber = model.Account.Number;
acct.Description = model.Account.Description;
var errorMsg = accountValidation.CheckOrgForDuplicatesNameAndNumber(acct, "AC", _Login.GetCurrentUserCustomer().Id);
if (errorMsg.Count > 0)
{
errorMsg.ForEach(m =>
{
ModelState.AddModelError("", m);
});
return PartialView("AddAccountModal", model);
}
if (acct.StartDate != model.Account.StartDate)
{
// if changing then start date must be before first fee
DateTime firstFeeDate = model.Account.StartDate;
var feeRepo = new FeeRepository(_ambientDbContextLocator);
var fees = feeRepo.GetActiveFeesForAccount(acct.Id);
if (fees.Any())
{
firstFeeDate = fees.First().PeriodStartDate.Value;
}
if (model.Account.StartDate > firstFeeDate)
{
ModelState.AddModelError("", "Account has already been billed. Start Date must be on or before " + firstFeeDate.ToShortDateString());
return PartialView("EditAccountModal", model);
}
var userId = _Login.GetCurrentUser().UserId;
var now = DateTime.Now;
// if moving earlier, then update start date of account-level attributes
if (model.Account.StartDate < acct.StartDate)
UpdateAttributesStartDate(acct.UserCodeValues, model.Account.StartDate, userId, now, "EditAccountModal");
else
// if moving later, then update start date of investment, account-level attributes, investment-level attributes, and participants
{
UpdateAttributesStartDate(acct.UserCodeValues, model.Account.StartDate, userId, now, "EditAccountModal");
PropagateStartDate(acct, model.Account.StartDate, userId, now, "EditAccountModal");
}
_AcRepo.AddAuditNote("Updating start date for account " + acct.GetDisplay() + ".", acct, user);
acct.StartDate = model.Account.StartDate;
acct.StatusCode = OrgStatus.P.SmartCode; // set to Pending
}
if (model.Client.ParentId != 0)
{
OrganizationHierarchy client = _AcRepo.GetClientByAccount(acct.Id);
if (client == null)
{
client = new OrganizationHierarchy
{
ParentOrganizationId = model.Client.ParentId,
ChildOrganizationId = acct.Id,
StartDate = acct.StartDate,
StatusCode = "A"
};
_AcRepo.AddOrganizationHierarchy(client, user);
}
else
{
if (client.ParentOrganizationId != model.Client.ParentId)
{
client.ParentOrganizationId = model.Client.ParentId;
}
}
}
//acct.Name = model.Account.Name;
//acct.OrganizationNumber = model.Account.Number;
//acct.Description = model.Account.Description;
//_AcRepo.SaveAccount(acct, _Login.GetCurrentUser());
_AcRepo.UpdateWithUser(acct, user.UserId, "AddAccountModal");
}
else
{
if (!ModelState.IsValid)
{
return PartialView("AddAccountModal", model);
}
var acct = new Organization()
{
Name = model.Account.Name,
OrganizationNumber = model.Account.Number,
Description = model.Account.Description,
StartDate = model.Account.StartDate,
StatusCode = "P",
CustomerId = GetCustomerId(),
TypeCode = "AC",
OrganizationTypeId = _AcRepo.FindByDetached(o => o.OrganizationTypeCode == "AC").FirstOrDefault().Id
};
var errorMsg = accountValidation.CheckOrgForDuplicatesNameAndNumber(acct, "AC", _Login.GetCurrentUserCustomer().Id);
if (errorMsg.Count > 0)
{
errorMsg.ForEach(m =>
{
ModelState.AddModelError("", m);
});
model.DDLProducts = SelectListItemHelper.Organizations(acct.CustomerId, "PR");
return PartialView("AddAccountModal", model);
}
var clientOH = new OrganizationHierarchy
{
ParentOrganizationId = model.Client.ParentId,
Child = acct,
StartDate = acct.StartDate,
StatusCode = "A"
};
var client = _AcRepo.FindByDetached(o => o.Id == model.Client.ParentId).First();
_AcRepo.AddOrganizationHierarchy(clientOH, user);
_AcRepo.AddWithUser(acct, user.UserId, "AddAccountModal");
if (model.ProductId != null)
{
Organization portfolio = _AcRepo.GetProductByProductId((int)model.ProductId, GetCustomerId());
var product = new Organization()
{
Name = portfolio.Name,
OrganizationNumber = portfolio.OrganizationNumber,
Description = portfolio.Description,
StartDate = model.InvetsmentDate,
StatusCode = "P",
CustomerId = GetCustomerId(),
TypeCode = portfolio.TypeCode,
OrganizationTypeId = _AcRepo.FindByDetached(o => o.OrganizationTypeCode == "PR").FirstOrDefault().Id
};
Organization organizationExist = _AcRepo.GetOrganizationByUniqueIndex(portfolio.Name, "PR", product.CustomerId, portfolio.OrganizationNumber);
OrganizationHierarchy oh = null;
if (organizationExist == null)
{
oh = new OrganizationHierarchy
{
Parent = acct,
Child = product,
StartDate = product.StartDate,
StatusCode = "A"
};
}
else
{
oh = new OrganizationHierarchy
{
Parent = acct,
Child = organizationExist,
StartDate = product.StartDate,
StatusCode = "A"
};
}
_AcRepo.AddOrganizationHierarchy(oh, user);
if (organizationExist == null)
{
_AcRepo.AddWithUser(product, user.UserId, "AddAccountModal");
}
}
else
{
//Create a default product
var defaultProduct = new Organization()
{
Name = acct.Name,
OrganizationNumber = acct.OrganizationNumber,
Description = acct.Description,
StartDate = acct.StartDate,
StatusCode = "P",
CustomerId = GetCustomerId(),
TypeCode = "PR",
OrganizationTypeId = _AcRepo.FindByDetached(o => o.OrganizationTypeCode == "PR").FirstOrDefault().Id
};
Organization organizationExist = _AcRepo.GetOrganizationByUniqueIndex(defaultProduct.Name, "PR", defaultProduct.CustomerId, defaultProduct.OrganizationNumber);
OrganizationHierarchy oh = null;
if (organizationExist == null)
{
oh = new OrganizationHierarchy
{
Parent = acct,
Child = defaultProduct,
StartDate = defaultProduct.StartDate,
StatusCode = "A"
};
}
else
{
oh = new OrganizationHierarchy
{
Parent = acct,
Child = organizationExist,
StartDate = defaultProduct.StartDate,
StatusCode = "A"
};
}
_AcRepo.AddOrganizationHierarchy(oh, user);
if (organizationExist == null)
{
_AcRepo.AddWithUser(defaultProduct, user.UserId, "AddAccountModal");
}
}
DoAuditableChange("Adding account " + acct.GetDisplay(), client, user);
}
dbContextScope.SaveChanges();
}
return Json(new { success = true });
}

11 Replies

Know the answer? Post it — somebody with the same question will find it here.

Jefferson S. Motta6y ago
Accepted answer
try here:

Choose an existing product

@(Html.LabelFor(m => m.ProductId))

@if (model.Count > 0) // HERE
@(Html.DropDownListFor(m => m.ProductId, new SelectList(Model.DDLProducts.OrderBy(x => x.Text), "Value", "Text"), "Please Select...", new { @class = "form-control", @id = "ddlProduct" }))

@*@Html.LabelFor(model => model.InvetsmentDate, new { @class = "col-sm-5 control-label" })*@
Start date

+2
Praveen Kumar6y ago
Hi All,

So, I finally completed this issue by replacing the below code.

// Existing code
model.ProductSelectLists(GetCustomerId());

//Replaced Code to avoid dropdown issue.
model.Products = model.Products = SelectListItemHelper.Organizations(_Login.GetCurrentUserCustomer().Id, "PR");

thanks all your support,
Praveen
+2
Laxmidhar Sahoo6y ago
Hi

I will try .But send the error and values at run time for the variable I convey to you

Thanks and regards
+1
Abhinandhu K R6y ago
you can simply check the values of class product by putting breakpoint..
+1
Praveen Kumar6y ago
Hi Laxmidhar ,

can you help me to fix this issue.
+1
Laxmidhar Sahoo6y ago
Hi

model.DDLProducts = SelectListItemHelper.Organizations(acct.CustomerId, "PR");

From above code can convey the value by placing break point ?

Thanks and regards
+1
Praveen Kumar6y ago
HI Ajay,

can you edit my code where i need to apply this Model.count > 0.
+1
Ajay Bachale6y ago
Model.DDLProduct is null. Check Model values and the DDL Product. You must Put Model.Count > 0 condition to avoid such runtime error before accessing any model property in view.
+1
Jefferson S. Motta6y ago
this line is returning null

model.DDLProducts = SelectListItemHelper.Organizations(acct.CustomerId, "PR");

you must check why!
+1
Laxmidhar Sahoo6y ago
hi

Is there a list DDLProducts which is bind to model ?
From controller check it and its value

Thanks and Regards
+1
Jignesh Kumar6y ago
Hi,

Praveen use this link,
https://stackoverflow.com/questions/26054026/how-to-set-id-and-class-of-dropdownfor-asp-net-mvc
+1