Question

Im having problems displaying records to my view when passing viewdata to a user control. This is only apparent for linq to sql objects where I am using table joins.

The exception I receive is ‘Unable to cast object of type ‘<>f__AnonymousType410[System.String,System.Int32,System.Nullable1[System.DateTime],System.String,System.String,System.String,System.String,System.String,System.Nullable1[System.Single],System.Nullable1[System.Double]]’ to type App.Models.table1.’

I have searched for a fix to this issue but not too familiar on whats wrong here for me to search for the right subject. This should be working in theory and this works for single table retrieving but when I added a join in their I ran into problems. I am currently using a foreach statement to query through my data via single table declaration. Any help would be greatly appreciated. Thanks in advance.

My current setup is:

CViewDataUC.cs(my class to hold viewdata and data connections specifically for user controls)

public void Info(ViewDataDictionary viewData, int id)     {         var dataContext = new testDataContext();          var info = from table1 in dataContext.table1                    join table2 in dataContext.table2 on table1.type_id equals table2.type_id                    join table3 in dataContext.table3 on table1.id equals table3.id                    join table4 in dataContext.table4 on table1.id equals table4.id                    where table1.id == id                    select new                    {                        table1.column1,                        table1.column2,                        table1.column3,                        table1.column4,                        table1.column5,                        table1.column6,                        table1.column7,                        table2.column1,                        table3.column1,                        table4.column1                    };                   viewData['vd_Info'] = info;      } 

HomeController.cs(Controller)

public ActionResult Information(int id)         {             ViewData['Title'] = 'Information';               CViewDataUC o_info = new CViewDataUC();              o_info.Info(this.ViewData, id);               return View();         } 

Information.aspx(View)

<%@ Page Title='' Language='C#' MasterPageFile='~/Views/Shared/Site.Master' AutoEventWireup='true'     CodeBehind='Info.aspx.cs' Inherits='App.Views.Info' %>  <asp:Content ID='Content1' ContentPlaceHolderID='MainContent' runat='server'>     <%Html.RenderPartial('~/Views/UserControls/Info.ascx', ViewData['vd_Info']);%> </asp:Content> 

Info.ascx(User Control)

<%foreach (table1 m in (IEnumerable)ViewData.Model)   { %> <div class='left'>     <br />     <br />     <p id='medium'>         Column 1         <br />         <%= Html.TextBox('column1', m.column1, new {@class = 'textBox', @readonly = 'readonly' })%>         Column 1         <br />         <%= Html.TextBox('column2', m.column2, new {@class = 'textBox', @readonly = 'readonly' })%>         <br />         Column 1         <br />         <%= Html.TextBox('column3', m.column3, new {@class = 'textBox', @readonly = 'readonly' })%>                 </p> </div> <%}%> 

Answer 1

foreach (table1 m in (IEnumerable)ViewData.Model) 

m is not of type table1. It is an anonymous type (select new { ... } in CViewDataUC.cs).

You should create a class that represents the type of the model objects you are passing from controller to view.