The entity object cannot be null.

When I attempt to save a record from the entitygridview, I get this error:

[NullReferenceException: The entity object cannot be null.]
   IGD.Web.Data.BaseDataSourceView`2.ValidateEntity(Entity entity, IDictionary keys) in C:\Projects\xxx\IGD.Web\Data\BaseDataSource.cs:1940
   IGD.Web.Data.BaseDataSourceView`2.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) in C:\Projects\xxx\IGD.Web\Data\BaseDataSource.cs:1558
   System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +78
   System.Web.UI.WebControls.GridView.HandleUpdate(GridViewRow row, Int32 rowIndex, Boolean causesValidation) +1215
   System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +837
   System.Web.UI.WebControls.GridView.OnBubbleEvent(Object source, EventArgs e) +95
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35
   System.Web.UI.WebControls.GridViewRow.OnBubbleEvent(Object source, EventArgs e) +117
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35
   System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +115
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +132
   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +177
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1746

Here is my code:

    <data:EntityGridView DataKeyNames="ManufacturerID" ID="gridManufacturer" runat="server" DataSourceID="dataManufacturer" AllowExportToExcel="True" AllowMultiColumnSorting="False" AllowPaging="True" AutoGenerateColumns="False" DefaultSortColumnName="ManufacturerId" DefaultSortDirection="Ascending" ExportToExcelText="Excel" PageSelectorPageSizeInterval="10">
        <Columns>
            <asp:CommandField ShowEditButton="True" />
            <asp:BoundField DataField="ManufacturerId" HeaderText="ManufacturerId" ReadOnly SortExpression="ManufacturerId" />
            <asp:BoundField DataField="ManufacturerName" HeaderText="ManufacturerName" SortExpression="ManufacturerName" />
            <asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" />
        </Columns>
    </data:EntityGridView>

    <data:ManufacturerDataSource ID="dataManufacturer" SelectMethod="GetPaged" runat="server" EnablePaging="True">
        <DeepLoadProperties Method="IncludeChildren" Recursive="False">
        </DeepLoadProperties>
    </data:ManufacturerDataSource>

Am I missing something?  The Auto-generated admin screen doesn't work right, either.  No matter what record you edit, it always updates where ManufacturerID = 1. 

Hello,

Could you email me your database schema and I will take a look at this.

Thanks

-Blake

Have you figured this out?

Thanks,

JoeM

Hello,

I never received your email. Could you please resend ( BNiemyjski AT codesmithtools d0t com ).

Thanks

-Blake Niemyjski

In my case, the problem was due (1) to there being no primary key: netTiers only works with the updating via FormView etc when it knows how to create a unique key for each row. And secondly (2) I was using a view, and trying to update data via a view, which netTiers doesn't support, and it appears that setting a primary key (or any other index) on a view doesn't seem to work correctly. I ended up doing things the manual way and just updating the two tables involved manually. :-( But I got tired of swimming up stream.