3
当我单击提交以创建帐户时，将显示以下错误。我无法找到它为什么会给出以下错误。我也尝试过使用断点和调试，但没用MVC ASP.NET没有为此对象定义的无参数构造函数
No parameterless constructor defined for this object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.MissingMethodException: No parameterless constructor defined for this object.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
AccountController.cs
[HandleError]
public ActionResult CreateNewFixedBankAccount()
{
ViewBag.AccountFromList = new SelectList(
ManageAccount.Instance.GetAccounts(), "accountID", "name");
ViewBag.AccountTypes = new SelectList(ManageAccountType.Instance.GetNonFixedTypes(), "id", "type");
ViewBag.Durations = new SelectList(ManageDuration.Instance.GetAllDurations(), "id", "duration1");
ViewBag.Currencies = new SelectList(ManageCurrency.Instance.getCurrencies(), "id", "symbol");
return View();
}
//
// POST: /Account/CreateNewFixedBankAccount
[HttpPost]
[HandleError]
public ActionResult CreateNewFixedBankAccount(ViewModel.NewAccountViewModel model, string username)
{
return View();
}
___________________________________________________________________________________________
CreateNewFixedBankAccount.cshtml 下面的提交按钮提供了错误
@model internetBankingApplication.ViewModel.NewFixedAccountViewModel
@{
ViewBag.Title = "CreateNewFixedBankAccount";
}
@using (Html.BeginForm())
{
ViewBag.Title = "Create";
Layout = "~/Views/Shared/_Layout.cshtml";
<fieldset>
<legend>Fixed Account Details</legend>
<div class="editor-label">
<br />
<b>@Html.LabelFor(model => model.Name)</b>
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Name)
</div>
<div class="editor-label">
<br />
<b> @Html.LabelFor(model => model.UserName)</b>
</div>
<div class="editor-field">
@Html.EditorFor(model => model.UserName)
</div>
<div class="editor-label">
<br />
<b> @Html.Label("Account From")</b>
</div>
<div class="editor-field">
@Html.DropDownListFor(model => model.accountFrom, (SelectList)ViewBag.AccountFromList)
</div>
<div class="editor-label">
<br />
<b> @Html.LabelFor(model => model.AvailableBalance)</b>
</div>
<div class="editor-field">
@Html.EditorFor(model => model.AvailableBalance)
</div>
<div class="editor-label">
<br />
<b>@Html.LabelFor(model => model.currency)</b>
</div>
<div class="editor-field">
@Html.DropDownListFor(model => model.currency, (SelectList)ViewBag.Currencies)
</div>
<div class="editor-label">
<br />
<b> @Html.LabelFor(model => model.Description)</b>
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Description)
</div>
<div class="editor-label">
<br />
<b> @Html.LabelFor(model => model.DateOpened)</b>
</div>
<div class="editor-field">
@Html.EditorFor(model => model.DateOpened)
</div>
<div class="editor-label">
<br />
<b> @Html.Label("Account Duration")</b>
</div>
<div class="editor-field">
@Html.DropDownListFor(model => model.duration, (SelectList)ViewBag.Durations)
@Html.ActionLink("View Duration Details","DurationDetails","Duration")
</div>
<div class="editor-label">
<br />
<b> @Html.Label("Account Renew")</b>
</div>
<div class="editor-field">
@Html.CheckBoxFor(model => model.renew)
</div>
<p>
<input type="submit" value="CreateNewFixedBankAccount" /></p>
</fieldset>
}
___________________________________________________________________________________________
NewFix edAccountViewModel.cs
此视图模型将获取与来自数据库中不同表的帐户有关的详细信息。
public class NewFixedAccountViewModel
{
private account _Account { get; set; }
private fixedAccount _FixedAccount { get; set; }
private int AccountFrom { get; set; }
public SelectList AccountTypes { get; set; }
public SelectList Durations { get; set; }
public SelectList AccountFromList { get; set; }
public SelectList Currencies { get; set; }
public int ID
{
get
{
return _Account.accountID;
}
}
[Required]
[Display(Name = "Account Name")]
public string Name
{
get
{
return _Account.name;
}
set
{
_Account.name = value;
}
}
[Required]
[Display(Name = "Account From")]
public int accountFrom
{
get
{
return accountFrom;
}
set
{
accountFrom = value;
}
}
public string AccountFromName
{
get
{
string result = string.Empty;
try
{
result = ManageAccount.Instance.GetAccountBYID(accountFrom).name;
}
catch { }
return result;
}
}
[Required]
[Display(Name = "Account Type")]
public int typeID
{
get
{
return _Account.typeID;
}
set
{
_Account.typeID = value;
}
}
public string AccountTypeName
{
get
{
string result = string.Empty;
try
{
result = ManageAccountType.Instance.getTypesByID(_Account.typeID).type;
}
catch { }
return result;
}
}
[Required]
[Display(Name = "Duration")]
public int duration
{
get
{
return _FixedAccount.duration;
}
set
{
_FixedAccount.duration = value;
}
}
public string durationName
{
get
{
string result = string.Empty;
try
{
result = ManageDuration.Instance.GetDurationById(_FixedAccount.duration).duration1;
}
catch { }
return result;
}
}
[Required]
[Display(Name = "Available Balance")]
public decimal AvailableBalance
{
get
{
return _Account.availableBalance;
}
set
{
_Account.availableBalance = value;
}
}
[Required]
[Display(Name = "Currency")]
public int currency
{
get
{
return _Account.currency;
}
set
{
_Account.currency = value;
}
}
public string CurrencyName
{
get
{
string result = string.Empty;
try
{
result = ManageCurrency.Instance.getTypesByID(_Account.currency).name;
}
catch { }
return result;
}
}
[Required]
[Display(Name = "Account Description")]
public string Description
{
get
{
return _Account.description;
}
set
{
_Account.description = value;
}
}
[Required]
[Display(Name = "Account Renew")]
public bool renew
{
get
{
if (_FixedAccount.renew == 0)
{
return false;
}
return true;
}
set
{
if (value == false)
{
_FixedAccount.renew = 0;
}
else
{
_FixedAccount.renew = 1;
}
}
}
[Required]
[Display(Name = "Date Opened")]
public DateTime DateOpened
{
get
{
return _Account.dateOpened;
}
set
{
_Account.dateOpened = value;
}
}
[Required]
[Display(Name = "Username")]
public string UserName
{
get
{
return _Account.username;
}
set
{
_Account.username = value;
}
}
public NewFixedAccountViewModel(string username)
{
AccountTypes = new SelectList(
ManageAccountType.Instance.getTypes(), "id", "type", _Account.typeID);
AccountFromList = new SelectList(
ManageAccount.Instance.GetUserAccounts(username), "accountID", "name", accountFrom);
Currencies = new SelectList(
ManageCurrency.Instance.getCurrencies(), "id", "name", _Account.currency);
Durations = new SelectList(
ManageDuration.Instance.GetAllDurations(), "id", "duration", _FixedAccount.duration);
}
public NewFixedAccountViewModel(int accountID, string username)
{
_Account = ManageAccount.Instance.GetAccountBYID(accountID);
_FixedAccount = ManageFixedAccount.Instance.GetFixedAccountByID(accountID);
AccountFromList = new SelectList(
ManageAccount.Instance.GetUserAccounts(username), "accountID", "name", accountFrom);
AccountTypes = new SelectList(
ManageAccountType.Instance.getTypes(), "id", "type", _Account.accountType);
Currencies = new SelectList(
ManageCurrency.Instance.getCurrencies(), "id", "name", _Account.currency);
Durations = new SelectList(
ManageDuration.Instance.GetAllDurations(), "id", "duration", _FixedAccount.duration);
}
您发布'NewFixedAccountViewModel'但你的视图绑定到'NewFixedAccountViewModel'。你可能想先看看。 – 2013-05-01 12:08:44
他意味着您的CreateNewFixedBankAccount操作正在接受'NewAccountViewModel'，并且您的视图有一个声明为'NewFixedAccountViewModel'的模型。 – wellers 2013-05-01 12:11:34
您可能需要检查您在回发视图中传回的所有模型参数都有'getters'和'setters'，以确保模型可以重新绑定。 – wellers 2013-05-01 12:13:13