Databinding error - does not contain a property with the name ... : The Official Microsoft ASP.NET Forums

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slick-asp.ne...

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Databinding error - does not contain a property with the name ...

Jan 22, 2013 01:18 PM|LINK

Good day,

I'm building a website using ASP.NET and C# (web forms) and I am getting the following error when using the Entity Framework:

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.Web.HttpException: DataBinding: 'System.Data.Objects.DataClasses.EntityCollection`1[[MOSDevelopmentProjects.DAL.Allocation, MOSDevelopmentProjects, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' does not contain a property with the name 'OriginalAlloc'.

My code looks like this

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Projects.aspx.cs" Inherits="MOSDevelopmentProjects.Projects" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <h2>Project List</h2>
    <asp:EntityDataSource ID="ProjectEntityDataSource" runat="server"
        ContextTypeName="MOSDevelopmentProjects.DAL.Development_ProjectsEntities" EnableDelete="True"
        EnableFlattening="False" EnableUpdate="True" EntitySetName="ProjectInfoes"
        Include="Allocations">
    </asp:EntityDataSource>
    <asp:GridView ID="ProjectGridView" runat="server" AllowPaging="True"
        AllowSorting="True" AutoGenerateColumns="False" SelectedRowStyle-BackColor="LightGray"
        DataKeyNames="ProjectNum, CabinetAuth" DataSourceID="ProjectEntityDataSource">
        <Columns>
            <asp:CommandField ShowSelectButton="True" ShowEditButton="True" />
            <asp:TemplateField HeaderText="Project Number" SortExpression="ProjectNum">
                <EditItemTemplate>
                    <asp:Label ID="Label1" runat="server" Text='<%# Eval("ProjectNum") %>'></asp:Label>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label1" runat="server" Text='<%# Eval("ProjectNum") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Cabinet Authority" SortExpression="CabinetAuth">
                <EditItemTemplate>
                    <asp:Label ID="Label2" runat="server" Text='<%# Eval("CabinetAuth") %>'></asp:Label>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label2" runat="server" Text='<%# Eval("CabinetAuth") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Minute Date" SortExpression="MinuteDate">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("MinuteDate", "{0:d}") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label3" runat="server" Text='<%# Eval("MinuteDate", "{0:d}") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Project Name" SortExpression="ProjectName">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("ProjectName") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label4" runat="server" Text='<%# Eval("ProjectName") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Date Created" SortExpression="DateCreated">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("DateCreated", "{0:d}") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label5" runat="server" Text='<%# Eval("DateCreated", "{0:d}") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Last Updated" SortExpression="LastUpdated">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("LastUpdated", "{0:d}") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label6" runat="server" Text='<%# Eval("LastUpdated", "{0:d}") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Balance" SortExpression="Balance">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("Balance") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label7" runat="server" Text='<%# Eval("Balance") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Cabinet Approved Sum" SortExpression="CabinetApprSum">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox6" runat="server" Text='<%# Bind("CabinetApprSum") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label8" runat="server" Text='<%# Eval("CabinetApprSum") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Type" SortExpression="Type">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox7" runat="server" Text='<%# Bind("Type") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label9" runat="server" Text='<%# Eval("Type") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Original Allocation">
                <ItemTemplate>
                    <asp:Label ID="Label10" runat="server" Text='<%# Eval("Allocations.OriginalAlloc") %>'></asp:Label>
                </ItemTemplate>
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox8" runat="server"
                    Text='<%# Eval("Allocations.OriginalAlloc") %>' Width="7em"
                    ></asp:TextBox>
                </EditItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
    <asp:Label ID="ErrorMessageLabel" runat="server" Text="" Visible="false" ViewStateMode="Disabled"></asp:Label>
</asp:Content>

The model looks like this:

Direct link to image: http://tinypic.com/r/2e2r15f/6

Hope someone can solve this.

If any more information is required to solve this problem please let me know.

Thanks.

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slick-asp.ne...

0 Points

28 Posts

Re: Databinding error - does not contain a property with the name ...

Jan 23, 2013 11:22 AM|LINK

Am I asking this in the wrong section?

I just realised there is a section for Entity Framework and I was wondering if the reason I am not getting any responses is because I am asking in the wrong section.

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Santosh Gada

Member

151 Points

32 Posts

Re: Databinding error - does not contain a property with the name ...

Jan 23, 2013 12:02 PM|LINK

Hi,

You might be refering the wrong version of MOSDevelopmentProjects.DAL.Allocation DLL in your project or that version of DLL has been not implemented with the propery 'OriginalAlloc'.

Thanks.

---------------------------------

/Santosh Gada

If this solved your issue, please mark as "Answered"

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speshulk926

Participant

904 Points

204 Posts

Re: Databinding error - does not contain a property with the name ...

Jan 23, 2013 01:10 PM|LINK

I see your table is called "Allocation", not "Allocations". Maybe that's your issue?

Edited by speshulk926 on Jan 23, 2013 01:11 PM

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slick-asp.ne...

0 Points

28 Posts

Re: Databinding error - does not contain a property with the name ...

Jan 23, 2013 01:22 PM|LINK

Hi Santosh,

In my project I have reference to this DLL as shown in the code below:

ContextTypeName="MOSDevelopmentProjects.DAL.Development_ProjectsEntities"

I did add all the tables when I was building the Entity Data Model, so I am not sure why I am getting this error.

I am adding a link to a screenshot from the Model Browser showing where the table is appearing in my data model, along with the OriginalAlloc property.

http://i48.tinypic.com/10q9se9.jpg

I'm not an expert with this so I may be missing something that would normally be obvious to someone else.

Thanks.