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PageRequestManagerServerErrorException: Specified cast is not valid. [Answered]RSS

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Last post Jun 13, 2013 12:04 PM by ivzp

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WombatEd
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PageRequestManagerServerErrorException: Specified cast is not valid.

Jan 27, 2010 05:56 PM|WombatEd|LINK

Dynamic Data newbie problem:

On my edit page, when I click Update, I get this error:

Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Specified cast is not valid.

My debugger says it's happening in this JavaScript function:

Sys$WebForms$PageRequestManager$_endPostBack(error, executor, data)

When the Edit page opens, one of my foreign key dropdowns doesn't have a selected value.

Any clues?

TIA
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sjnaughton
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jan 28, 2010 03:19 AM|sjnaughton|LINK

Hi WombatEd, if you open up the site.master and edit the line that has EnablePartialRendering="true" and change it to false the real error will show up [:)]

Dynamic Data EnablePartialRendering

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WombatEd

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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jan 28, 2010 11:09 AM|WombatEd|LINK

sjnaughton
site.master and edit the line that has EnablePartialRendering="true" and change it to false the real error will show up

Thanks, sjnaughton.

That gets me to an error page that tells me the same thing, and I have no idea what it is that is being cast as what.

[InvalidCastException: Specified cast is not valid.]
   System.Data.Linq.SingleKeyManager`2.TryCreateKeyFromValues(Object[] values, V& v) +59
   System.Data.Linq.IdentityCache`2.Find(Object[] keyValues) +28
   System.Data.Linq.StandardIdentityManager.Find(MetaType type, Object[] keyValues) +23
   System.Data.Linq.CommonDataServices.GetCachedObject(MetaType type, Object[] keyValues) +48
   System.Data.Linq.ChangeProcessor.GetOtherItem(MetaAssociation assoc, Object instance) +142
   System.Data.Linq.ChangeProcessor.BuildEdgeMaps() +254
   System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode failureMode) +59
   System.Data.Linq.DataContext.SubmitChanges(ConflictMode failureMode) +331
   System.Data.Linq.DataContext.SubmitChanges() +19
   System.Web.UI.WebControls.LinqToSqlWrapper.SubmitChanges(DataContext dataContext) +9
   System.Web.UI.WebControls.LinqDataSourceView.UpdateDataObject(Object dataContext, Object table, Object oldDataObject, Object newDataObject) +109
   System.Web.UI.WebControls.LinqDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) +525
   System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +92
   System.Web.UI.WebControls.DetailsView.HandleUpdate(String commandArg, Boolean causesValidation) +837
   System.Web.UI.WebControls.DetailsView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +509
   System.Web.UI.WebControls.DetailsView.OnBubbleEvent(Object source, EventArgs e) +95
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   System.Web.UI.WebControls.DetailsViewRow.OnBubbleEvent(Object source, EventArgs e) +113
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +118
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +135
   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

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sjnaughton
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jan 28, 2010 11:38 AM|sjnaughton|LINK

Hi WombatEd, are you using GUID UniqueIdentifiers in your DB?

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WombatEd
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jan 28, 2010 02:53 PM|WombatEd|LINK

sjnaughton
are you using GUID UniqueIdentifiers in your DB?

No.

I've stumbled upon a work-around, but I don't know why it works. I was getting these errors whenever the table I was editing (Table A) had a FK pointing to a VARCHAR(8) field in a second table (Table B). The VARCHAR(8) field in Table B was indexed unique, but was not the PK. Luckily, I had a third table, which had a one-to-one relationship to Table B, with the third table's PK being the same VARCHAR. So I changed all the FKs to point to the third table.

(Please folk's, not TOO many flames about this structure; I inherited it.)

Thanks, Steve, for all your efforts. If this makes any sense at all to you, I'm all ears.
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sjnaughton
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jan 28, 2010 06:39 PM|sjnaughton|LINK

That would explain it [:)]

WombatEd
but was not the PK.
Linq to SQL does need it to be a PK for the relationship to work.

Dynamic Data

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ivzp
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jun 13, 2013 05:59 AM|ivzp|LINK

I am having the same problem, namely, changing in Site.Master EnablePartialRendering="true" throws PageRequestManagerServerErrorException when navigating through the tables.

My DB is full with GUIDs. Is there a solution to this issue?

Thanks in advance,

Ivar

Dynamic Data
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sjnaughton
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jun 13, 2013 08:41 AM|sjnaughton|LINK

Hi ivzp, are you using Linq to SQL or Entity Framework? and when you say

ivzp
when navigating through the tables
do you mean clicking on foreign key and child links?

Dynamic Data

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Always seeking an elegant solution.
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ivzp
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jun 13, 2013 11:52 AM|ivzp|LINK
I was probably not very specific in my post. I am using Entity Framework, with .Net version 4, Visual Studio 2010.

I have generated a DynamicaData (DD) Web Site project from a Database (SQL Server 2008) in which almost every table has a Guid as Primary Key. I have introduced just one CalendarExtender from AjaxControlToolKit (you can guess that I am a beginner in DD).

In Global.asax file I have introduced (in RegisterRoutes routine):
```
DefaultModel.RegisterContext(typeof(LaudeaEntities), new ContextConfiguration() { ScaffoldAllTables = true });
```
In Site.Master I am using:
```
        <asp:ScriptManager 
            ID="ScriptManager1" 
            runat="server" 
            EnablePartialRendering="false"
            EnableScriptGlobalization="true"
            EnableScriptLocalization="true"
            />
```
Everything works ok so far. If I change
```
EnablePartialRendering="true"
```
then, while browsing through the records of all tables with more than 10 records, the hit of "Next page" at the bottom of the record list, to see the next 10 records set, I get the JS error:

Sys.WebForms.PageRequestManagerServerErrorException: Specified cast is not valid

Well, the error is written in Spanish "La cadena de entrada no tiene el formato correcto.". I think that is the correct English translation, but I could be wrong.
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ivzp
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Re: PageRequestManagerServerErrorException: Specified cast is not valid.

Jun 13, 2013 12:04 PM|ivzp|LINK

Actually I succeded in getting the English description of the exception:

Sys.WebForms.PageRequestManagerServerErrorException: Input string was not in a correct format.

Please, excuse me about the confusion.

Ivar

Dynamic Data

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