An item with the same key has already been added. RSS

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  eric2820

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  An item with the same key has already been added.

  Nov 25, 2012 07:39 PM|LINK

  This is the View for the data that is generating this error:

  @model My_MSI.Net.Models.Entities.BankData
  @{
      ViewBag.Title = "Admin BackOffice | Enter Bank Info";
      Layout = "~/Views/Shared/_BackOffice_Layout.cshtml";
  }

  <h2>My-MSI.Net | Admin Back Office | Enter Bank Info</h2>

  @using ( Html.BeginForm() )
  {
  <table>
  <tr>
  <td style="text-align: center" colspan="2">
                  @Html.ValidationSummary()
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                  Bank Name:
  </td>
  <td style="text-align: left">
                  @Html.EditorFor( m => Model.bankName )
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                  As Of Date:
  </td>
  <td style="text-align: left">
                  @Html.EditorFor( m => Model.asOfDate )
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                 Savings Interest Rate:
  </td>
  <td style="text-align: left">
                  @Html.EditorFor( m => Model.interestRate1 )
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                  CD Interest Rate:
  </td>
  <td style="text-align: left">
                @Html.EditorFor( m => Model.interestRate2 )
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                  CD Term:
  </td>
  <td style="text-align: left">
                  @Html.EditorFor( m => Model.cdTerm )
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                  Savings Url:
  </td>
  <td style="text-align: left">
                  @Html.EditorFor( m => Model.url1 
  </td>
  </tr>
  <tr>
  <td style="text-align: right">
                  CD Url: 
  </td>
  <td style="text-align: left">
                  @Html.EditorFor( m => Model.url2 )
  </td>
  </tr>
  <tr>
  <td style="text-align: center" colspan="2">
                  @Html.Hidden("id", Model.GetNextId().ToString() )
          <input type="submit" id="submit" value="Submit" />
  </td>
  </tr>
  </table>
  }

  I have verifoed that the Hiddent field has a value of '2'. And currently that the only id in the database is '1'.

  What I do not understand is why I keep getting this error even with breakpoints set in the Controller!

  Any suggestions?

   

  Eric
  
  http://www.my-msi.net/Admin
  blog
  
  If a post helps you, please mark it as Ansered, thank-you.
  • Edited by eric2820 on Nov 25, 2012 07:41 PM
  • Edited by eric2820 on Nov 26, 2012 12:29 AM
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  ignatandrei

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  Re: An item with the same key has already been added.

  Nov 26, 2012 03:09 AM|LINK

  eric2820

  An item with the same key has already been added.

  stack trace, please.

  My .NET blog : http://msprogrammer.serviciipeweb.ro/ |2012 Programmer tools
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  eric2820

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  1161 Posts

  Re: An item with the same key has already been added.

  Nov 26, 2012 09:02 AM|LINK

  Stack Trace:

  [ArgumentException: An item with the same key has already been added.] System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +52 System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +9377995 System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) +252 System.Web.Mvc.ModelBindingContext.get_PropertyMetadata() +170 System.Web.Mvc.DefaultModelBinder.BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) +223 System.Web.Mvc.DefaultModelBinder.BindProperties(ControllerContext controllerContext, ModelBindingContext bindingContext) +93 System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +53 System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +1367 System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +449 System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +317 System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +117 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343 System.Web.Mvc.Controller.ExecuteCore() +116 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10 System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21 System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62 System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50 System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8970061 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

  ---

  Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

  Eric
  
  http://www.my-msi.net/Admin
  blog
  
  If a post helps you, please mark it as Ansered, thank-you.
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  ignatandrei

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  Re: An item with the same key has already been added.

  Nov 26, 2012 10:49 AM|LINK

  very strange... all MVC error - no link with database id1 or 2. Could you reproduce on a sample project, no database involved?

  My .NET blog : http://msprogrammer.serviciipeweb.ro/ |2012 Programmer tools
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  CPrakash82

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  Re: An item with the same key has already been added.

  Nov 26, 2012 10:58 AM|LINK

  Do you have model property with the same name with different casing? Model Binder doesn't support that.

  Ex. -

  public int ID {get;set;}

  public int id {get;set;}

  If you have similar scenario, it will not work. Please check your model and change it accordingly.

  http://cprakash.com
  • Marked as answer by eric2820 on Nov 26, 2012 01:12 PM
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  eric2820

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  Re: An item with the same key has already been added.

  Nov 26, 2012 12:38 PM|LINK

  I don't have duplicate id and ID fields, but I do have interestRate1 and InterestRate1 fileds.

  The thing I don't understand is why that would be causing this probelm because I'm certain that the id field has a value of '2' and the ONLY record in the database has a value of '1'.

   

   

  Eric
  
  http://www.my-msi.net/Admin
  blog
  
  If a post helps you, please mark it as Ansered, thank-you.
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  CPrakash82

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  Re: An item with the same key has already been added.

  Nov 26, 2012 12:43 PM|LINK

  eric2820

  I don't have duplicate id and ID fields, but I do have interestRate1 and InterestRate1 fileds.

  I was taking ID field as an example, yes, you need to modify these fields to be unique irrespective of casing.

  eric2820

  The thing I don't understand is why that would be causing this probelm because I'm certain that the id field has a value of '2' and the ONLY record in the database has a value of '1'.

  Its not about DB or values, its the way DefaultModelBinder works.

  http://cprakash.com
  • Marked as answer by eric2820 on Nov 26, 2012 01:12 PM